Mechanical Engineering Top mcq

 Mechanical Engineering Model mcq for Upcoming Exam.

01. In Rankine cycle, the work output from the turbine is given by __________.

A. change of internal energy between inlet and outlet

B. change of enthalpy between inlet and outlet

C. change of entropy between inlet and outlet

D. change of temperature between inlet and outlet

Correct Answer: B

The Rankine cycle is an idealized thermodynamic cycle of a heat engine that converts heat into mechanical work while undergoing phase change. It is an idealized cycle in which friction losses in each of the four components are neglected.

 

02. If a reheater is added to a Rankine Cycle, then usually ___________.

A. the network increases and dryness fraction at the exit of turbine increases.

B. the network and efficiency decrease

C. the network remains same and efficiency increases

D. the network increases and efficiency remains same

Correct Answer: A

Reheat Rankine Cycle is essentially a modification of simple Rankine cycle.

In reheating the dryness fraction of steam at the exit increases and also network increases. 

The thermal efficiency may increase or may decrease depending upon the mean temperature of heat addition.

03. In an axial flow compressor, when the degree of reaction is 50%, it implies that

A. Work done is compression will be the least

B. 50% stages of the compressor will be ineffective

C. Pressure after compression will be optimum

D. The compressor will have symmetrical blades

Correct Answer: D

 

04. Which type of compressor is commonly used in a gas turbine plant?

A. Reciprocating compressor

B. Screw compressor

C. Multistage axial flow compressor

D. Either (A) & (B)

Correct Answer: C

Multistage axial flow compressor is the compressor in practical usage in a gas turbine plant.

 

05. The psychrometric chart graphically represents

A. Interrelation of air temperature and moisture.

B. Interrelation of air pressure and moisture.

C. Interrelation of volume and temperature.

D. Interrelation of pressure and temperature.

Correct Answer: A

The atmosphere is a mixture of air (oxygen and nitrogen) and water vapour. Psychrometry is the study of moist air and of the changes in its conditions.

A psychrometric chart is a graphical representation of the physical and thermal properties of atmospheric air for a particular barometric pressure. Most charts are constructed to be used at a barometric pressure of 101.325 kPa (normal atmospheric pressure at sea level).

06. In psychrometric chart, which lines have highest slope?

A. WBT (wet bulb temp.)

B. h. (sp. Enthalpy)

C. Relative humidity

D. v (specific volume)

Correct Answer: D

In psychrometric chart, specific volume lines have highest slope.

 

07. In a psychrometric chart, relative humidity lines are:

A. Curved

B. Inclined and straight but non-uniformly spaced

C. Horizontal and non-uniformly spaced

D. Horizontal and uniformly spaced

Correct Answer: A

In psychrometric chart, relative humidity (RH) lines are curved having positive slope from zero to infinite.

 

08. Which of the following properties of refrigerant is not desirable?

A. Low boiling point

B. High critical temperature

C. Specific volume at the inlet of compressor must be high

D. Low Viscosity

Correct Answer: C

Work input to the compressor is directly dependent upon the volume at the inlet of compressor.

More the volume, more will be the work.

Thus, it is undesirable.

All others are desirable.

09. The Mollier diagram of a pure substance is a

A. h-s diagram

B. T-s diagram

C. P-h diagram

D. h-P diagram

Correct Answer: A

The Mollier diagram of a pure substance is enthalpy(h) vs. entropy(s) diagram.

So, the correct option is (a).

10. The cutting force in punching and blanking operations mainly depends on

A. the modulus of elasticity of metal.

B. the shear strength of metal

C. the bulk modulus of metal

D. the yield strength of metal

Correct Answer: B.

 

11. Which of the following welding technique requires vacuum for its application?

A. Laser-Beam welding

B. Electron-Beam welding

C. Atomic Hydrogen welding

D. Electroslag welding

Correct Answer: B

Electron beam welding is a fusion joining process that produces electron beam in a vacuum which is impinged with high energy to heat the weld joint.

So, the correct option is (b).

 

12. Riser is provided to compensate ____.

A. Only liquid shrinkage

B. Only solidification shrinkage

C. Both liquid and solid shrinkage

D. Both liquid and solidification shrinkage

Correct Answer: D

Both liquid and solidification shrinkage can be compensated by providing the riser. Solid shrinkage is compensated by increasing the size of pattern in the form of shrinkage allowance.

So, the correct option is (d).

 

13. Relation between velocity and radius in Forced vortex motion is

A. Inversely proportional

B. Directly proportional

C. No relation exists

D. Constant

Correct Answer: B

 

14. An adjustable blade turbine is called _______.

A. Propeller Turbine

B. Kaplan Turbine

C. Pelton Turbine

D. Banki Turbine

Correct Answer: B

A Kaplan turbine is basically a propeller with adjustable blades inside a tube.

It is a type of axial flow reaction turbine.

 

15. Specific speed of a pump depends upon_____.

A. Speed, head and discharge

B. Discharge and power

C. Speed and head

D. Speed, power and head

Correct Answer: A

16. When two systems are in thermal equilibrium with a third system, they are in thermal equilibrium with each other, this law is known as

A. Zeroth law of thermodynamics

B. First law of thermodynamics

C. Second law of thermodynamics

D. None of these

Correct Answer: A

The zeroth law of thermodynamics states that if two thermodynamic systems are each in thermal equilibrium with a third one, then they are in thermal equilibrium with each other. 

 

17. A system will be thermodynamic equilibrium only if it is in __________.

A) Thermal equilibrium

B) Mechanical equilibrium

C) Chemical equilibrium

A. only A

B. only B

C. only C

D. A, B and C

Correct Answer: D

A system is said to be in equilibrium when system has achieved all the four equilibrium as given below

Thermal equilibrium,

Mechanical equilibrium,

Chemical equilibrium

No phase changes.

 

18. Newton’s first law of motion is also known as

A. the Law of Conservation of Momentum

B. the Law of Inertia

C. gravity

D. Coulomb’s law

Correct Answer: B

According to first law of motion an object will remain at rest or in a uniform state of motion unless that state is changed by an external force. This is also known as the law of inertia.

19. Bearings are compared based on their load carrying capacity, therefore the bearing whose load carrying capacity is independent of speed is;

A. Hydrostatic bearing

B. Hydrodynamic bearing

C. Rolling contact bearing

D. Sliding contact bearing

Correct Answer: A

For hydrostatic bearing, the load carrying capacity is independent of speed, as constant thickness of fluid film is presented by external pump throughout the operation.

20. A wire rope is designated by 8×19, find the no. of wire in each strand ______.

A. 8

B. 19

C. 152

D. Can’t be determined

Correct Answer: B

Designation of wire rope: m×n

Where m: no. of strands

n: no. of wire in each strand.

21. Which of the following is not a hardness test.

A. Brinell’s test

B. Vickers’s test

C. Izod test

D. Knoop test

Correct Answer: C

Izod test is a toughness test whereas all others are Hardness measuring test.

22. The phenomenon of slow extension of materials having constant load, i.e. increasing with the time is called

A. Creep

B. Yielding

C. Breaking

D. Plastic flow

Correct Answer: A

creep (sometimes called cold flow) is the tendency of a solid material to move slowly or deform permanently under the influence of persistent mechanical stresses. It can occur as a result of long-term exposure to high levels of stress that are still below the yield strength of the material. Since there is a constant load and stress increases with time, phenomenon is Creeping

23. Diamond Pyramid Hardness is related to __________.

A. Brinell Hardness Test

B. Vickers Hardness Test

C. Rockwell Hardness Test

D. None of above

Correct Answer: B

The Rockwell hardness test is used for finding hardness of ferrous and nonferrous metals.

24. When a rectangular beam is loaded transversely, the maximum tensile stress is developed on the

A. Top layer

B. Bottom layer

C. Neutral axis

D. At any cross section

Correct Answer: A

When a rectangular beam is loaded transversely, the maximum tensile stress is developed on the top layer.

25. The shape of a cantilever beam for uniformly distributed load will be

A. Straight line

B. Parabolic

C. Elliptical

D. None of these

Correct Answer: B

The shape of a cantilever beam for uniformly distributed load will be parabolic.

26. Which of the following is a dimensionless quantity?

A. Stress

B. Strain

C. Poisson’s ratio

D. Both (b) and (c)

Correct Answer: D

Both strain and Poisson’s ratio are a dimensionless quantity.

27. The bending stress is zero at

A. Top fibre

B. Bottom fibre

C. Neutral axis

D. Between top fibre and neutral axis

Correct Answer: C

28. The method of obtaining different mechanism by fixing different links of a kinematic chain is known as:

A. Structure

B. Mechanism

C. Inversion

D. None of these

Correct Answer: C

29. Permanent deformation of material with respect to time due to constant load and variable temperature is known as _________.

A. Elasticity

B. Isotropy

C. Hardness

D. Creep

Correct Answer: D

Creep may be defined as a time-dependent permanent deformation at elevated temperature and constant stress.

Creep deformation occurs due to grain-boundary sliding, the more grain boundary area, the easier creep deformation will be. Thus, Creep deformation and creep strength are a grain-size sensitive property.

30. The system of forces whose line of action meet at a common point and there is no net force or a resultant force due to their effect is called____________.

A. Coplanar Forces

B. Collinear Forces

C. Concurrent Forces

D. Independent Forces

Correct Answer: C

Concurrent Forces are system of forces whose line of action meet at a common point and there is no net force or a resultant force due to their effect. When their line of action is extended, they will meet at a common point.

31. In a perfect truss, the numbers of members should be

Where J is the number of joints.

A. 2J – 3

B. J-1

C. 2J-1

D. 3J-2

Correct Answer: A

A perfect truss the number of members is equal to L = 2J – 3

A perfect truss is one in which the number of members is sufficient to keep it in equilibrium.

General Studies top 17 mcq.

01.Mahatma Gandhi underlook fast unto death in 1932, mainly because

Ramsay Macdonald announced the Communal
Award. 

02.With reference to Ryotwari Settlement, consider the following statements:
1. The rent was paid directly by the peasants to the
Government.
2. The government gave Pattas to the Ryots.
3. The lands were surveyed and assesses before
being taxed.
Which of the statements given above is/are
correct?

 (a) 1, 2 and 3.

03.Which of the following provisions of the
Constitution of India have a bearing on Education?
1. Directive Principles of State Policy.
2. Rural and Urban Local Bodies.
3. Seventh Schedule
Select the correct answer using the codes given
below:

 (a) 1, 2 and 3.

Explanation:-
7 th schedule determins whether Education is a Union, State or Concurrent matter.
Sixth schedule
(v) education, that is to say, primary education, higher secondary including vocational training,
adult education, college education (general).

04.Which of the following is the chief characteristic of‘mixed farming’?

Rearing of animals and cultivation of crops
together. 

05.Consider the following factors:
1. Rotation of the Earth
2. Air pressure and wind
3. Density of ocean water

Which of the above factors influence the ocean
currents?

(a) 1, 2 and 3.

06.With reference to the wetlands of India

The country’s total geographical area under the
category of wetlands is recorded more in Gujarat as compared to other States. 

Explanation:-
Gujarat is called "Land of wetlands"

07.In India, other than ensuring that public funds are used efficiently and for intended purpose, what is the importance of the office of the Comptroller and Auditor General (CAG)?

1. CAG reports on the execution of projects or
programmes by the ministries are discussed by the
Public Accounts Committee.
2. Information from CAG reports can be used by
investigating agencies to press charges against those who have violated the law while managing public finances. 

Which of the statements given above is/are
correct?

(a)both of the above.

08.The Prime Minister of India, at the time of his/her appointment

Need not necessarily be a member of one of the
Houses of the Parliament but must become a
member of one of the Houses within six months.

09.Which reference to the Delimitation Commission,consider the following statements:

1. The orders of the Delimitation Commission cannot be challenged in a Court of Law.

2. When the orders of the Delimitation Commission are laid before the Lok Sabha or State Legislative Assembly, they cannot effect any modifications in the orders.

Which of the statements given above is/are
correct?

 (a) Both 1 and 2.

10.Consider the following:
1. Hotels and restaurants
2. Motor transport undertakings
3. Newspaper establishments
4. Private medical institutions

The employees of which of the above can have the
‘Social Security’ coverage under Employees’ State Insurance Scheme?

(a) 1, 2, 3 and 4.

11.According to the Constitution of India, it is the duty of the President of India to cause to be laid before the Parliament which of the following?
1. The Recommendation of the Union Finance
Commission.
2. The Report of the Comptroller and Auditor
General.
3. The Report of the National Commission for
Scheduled Castes.
Select the correct answer using the codes given
below:

(a) 1, 2 and 3.

12. A deadlock between the Lok Sabha and the Rajya Sabha calls for a joint sitting of the Parliament during the passage of

Ordinary Legislation.

13.How do District Rural Development Agencies
(DRDAs) help in the reduction of rural poverty in
India?
1. DRDAs secure inter-sectoral and interdepartmental coordination and cooperation for effective implementation of anti-poverty
programmes.
2. DRDAs watch over and ensure effective utilization of the funds intended for anti-poverty programmes.

Which of the statements given above is/are
correct?

(a)1and 2.

14.Which of the following is/are among the
Fundamental Duties of citizens laid down in the
Indian Constitution?
1. To preserve the rich heritage of our composite
culture.
2. To develop the scientific temper and spirit of
inquiry.
3. To strive towards excellence and all spheres of
individual and collective activity.

Select the correct answer using the codes given
below:

 (a) 1, 2 and 3.

15.What is the provision to safeguard the autonomy of the Supreme Court of India?
1. While appointment the Supreme Court Judges,
the President of India has to consult the Chief Justiceof India.
2. The salaries of the Judges are charged on the
Consolidated Fund of India to which the legislature does not have to vote. 

Which of the statements given above is/are
correct?

 (a) 1 and 2.

16. The increasing amount of carbon dioxide in the air is slowly raising the temperature of the atmosphere, because it absorbs

The infrared part of the solar radiation. 

17.Which one of the following sets of elements was primarily responsible for the origin of life on the Earth?

Carbon,Hydrogen, Nitrogen.

General Studies top 19 mcq.

01.In the areas covered under the Panchayat (Extension

to the Scheduled Areas) Act, 1996, what is the

role/power of Gram Sabha?

1. Gram Sabha has the power to prevent alienation

of land in the Scheduled Areas.

2. Gram Sabha has the ownership of minor forest

produce.

(a) both of the above.

02.In the Parliament of India, the purpose of an

adjournment motion is

to allow a discussion on a definite matter of

urgent public importance. 

03.How does National Biodiversity Authority (NBA) help in protecting the Indian Agriculture?

1. NBA checks the biopiracy and protects the

indigenous and traditional genetic resources.

2. Application for Intellectual Property Rights related to genetic/biological resources cannot be made without the approval of NBA.

Which of the statements given above is/are

correct?

 (a) both of the above.

04. Consider the following provisions under the

Directive Principles of State Policy as enshrined in

the Constitution of India:

1. Organizing village Panchayats.

2. Promoting cottage industries in rural areas.

above are the Gandhian Principles that

are reflected in the Directive Principles of State

Policy.

05.With reference to consumers’ rights/privileges

under the provisions of law in India, which of the

following statements is/are correct?

1. Consumers are empowered to take samples for

food testing.

2. In case of death of a consumer, his/her legal heir

can file a complaint the consumer forum on his/her behalf.

(a) both of the above.

06.Regarding the office of the Lok Sabha Speaker,

If he/she intends to resign, the letter of his/her

resignation has to be 

addressed to the Deputy Speaker. 

07.Which of the following are included in the original jurisdiction of the Supreme Court?

1. A dispute between the Government of India and

one or more States.

2. A dispute between two or more States.

(a) both of the above.

08.Consider the following kinds of organisms:

1. Bacteria

2. Fungi

3. Flowering plants

Some species of which of the above kinds of

organisms are employed biopesticides.

09.What is the role of ultraviolet (UV) radiation in the water purification systems?

It inactivates/kills the harmful microorganisms in water. 

10.With reference to the scientific progress of ancient India, which of the statements given below are correct?

1. Different kinds of specialized surgical instruments were in common use by 1st century AD.

2. Transplant of internal organs in the human body

had beginning of 3rd century AD.

3. The concept of sine of an angle was known in 5th century AD.

4. The concept of cyclic quadrilaterals was known in 7th century AD.

Select the correct answer using the codes given

below

(a) 1, 2, 3 and 4.

11.With reference to the history of ancient India, which

of the following was/were common to both Buddhism and Jainism?

1. Indifference to the authority of the Vedas.

2. Denial of efficacy of rituals.

Select the correct answer using the codes given

below:

(a)both of the above.

12.Which of the following can be said to be essentially

the parts of ‘Inclusive Governance’?

1. Establishing effective District Planning

Committees in all the districts.

2. Increasing the government spending on public

health.

3. Strengthening the Mid-day Meal Scheme.

Select the correct answer using the codes given

below:

4.all of the above.

13.The Nagara, the Dravida and the Vesara are the

Three main styles of Indian temple architecture. 

14.Which of the following is/are the principal feature(s) of the Government of India Act, 1919?

1. Introduction of diarchy in the executive

government of the provinces.

2. Devolution of legislative authority by the centre

to the provinces.

Select the correct answer using the codes given

below:

(a)both of the above.

15.During Indian freedom struggle, the National Social Conference was formed. What was the reason for its formation?

Behramji Malabari and M.G. Ranade decided to

bring together all the social reform groups of the

country under one organization. 

16.which of the following parties were established by Dr. B.R. Ambedkar

1. All India Scheduled Castes Federation.

2. The Independent Labour Party.

(a)both of the above.

17.Which of the following special powers have been

conferred on the Rajya Sabha by the Constitution of India?

To pass a resolution empowering the Parliament

to make laws in the State List and to create one or

more All India Services. 

18.How does the National Rural Livelihood Mission seek to improve livelihood options of rural poor?

By strengthening ‘self-help groups’ and providing

skill development. 

19.Which of the following are the methods of

Parliamentary control over public finance in India?

1. Placing Annual Financial Statement before the

Parliament.

2. Withdrawal of moneys from Consolidated Fund of

India only after passing the Appropriation Bill.

3. Provisions of supplementary grants and vote-onaccount.

4. Introducing Finance Bill in the Parliament. 

5.all of the above.

General Studies top 10 mcq.

01.With reference to “Look East Policy” of India, consider the following statements:

1. India wants to establish itself as an important regional player in the East Asian affairs.
2. India wants to restore the historical and cultural ties with its neighbours in Southeast and East Asia.
Which of the statements given above is/are correct?

(a) both of the above.

02.When the annual Union Budget is not passed by the Lok Sabha,

The Prime Minister submits the resignation of Council of Ministers.

03.Under the constitution of India, which one of the following is a fundamental duty?

(a) To develop the scientific temper
(b) To safeguard public property
(c) To abide by the Constitution and respect its ideals.
(d) all of the above.

04.What is the difference between a CFL and an LED lamp?

1. To produce light, a CFL uses mercury vapour and phosphor while an LED lamp uses semi-conductor material.
2. A CFL is less energy-efficient as compared to an LED lamp.

Which of the statements given above is/are correct?

(a) both of the above is correct.

05.With reference to Indian freedom struggle, Usha Mehta is well-known for 

Running the secret Congress Radio in the wake of Quit India Movement.

06.With reference to the period of Indian freedom struggle, which of the following was/were recommended by the Nehru report?

1. Joint electorates for reservation of seats for minorities
2. Provision of fundamental right for the people of India in the constitution.

Select the correct answer using the codes given below:

(a)both of the above.

07.What is the difference between “vote-on-account” and “interim budget”?

1. The provision of a “vote-on-account” is used by a regular Government, while an “interim budget” is a provision used by a caretaker Government.
2. A “vote-on-account” only deals with the expenditure in Government’s budget, while an “interims budget” includes both expenditure and receipts.
Which of the statements given above is/are correct?

(a)Both 1 and 2.

08.Regarding the International Monetary Fund, which one of the following statements is correct?

It grants loans to only member countries.

09.A “closed economy” is an economy in which

Neither exports nor imports take place.

10.When the bark of a tree is removed in a circular fashion all around near its base, it gradually dries up and dies because

Roots are starved of energy.

General Studies top 25 mcq.

01.The Jain philosophy holds that the world is created and maintained by

Universal Law.

02.The “Red Data Books” published by the International Union for Conservation of Nature and Natural Resource (IUCN) contain lists of

 Threatened plant and animal species.

03.An artificial satellite orbiting around the Earth does not fall down. This is so because the attraction of Earth. 

Provides the necessary acceleration for its motion.

04.____________ have the highest share in the disbursement of credit to agriculture and allied activities?

Commercial Banks.

05.Which of the following can aid in furthering the Government’s objective of inclusive growth?
1. Promoting Self-Help Groups
2. Promoting Micro, Small and Medium Enterprises.
3. Implementing the Right to Education Act
Select the correct answer using the codes given below:

Answer:-

(a) 1, 2 and 3.

06.Economic growth is usually coupled with

Inflation.

07.The lowering of Bank Rate by the Reserve Bank of India leads to

More liquidity in the market.

08.Westerlies in southern hemisphere are stronger and persistent than in northern hemisphere. Why?

Southern hemisphere has less landmass as compared to northern hemisphere. 

09.Between India and East Asia, the navigation-time and distance can be greatly reduced by which of the following?
1. Deepening the Malacca straits between Malaysia and Indonesia.
2. Opening a new canal across the Kra isthmus between the Gulf of Siam and Andaman Sea.
Which of the statements given above is/are correct?

(a) Both 1 and 2.

10.Consider the following:

1. Right to education.
2. Right to equal access to public service.
3. Right to food.
Which of the above is/are Human Right/Human Rights under “Universal Declaration of Human Rishts”?

(a) 1, 2 and 3.

11.The surface of a lake is frozen in severe winter, but the water at its bottom is still liquid. What is the reason?

Ice is a bad conductor of heat.

12.What is the difference between Bluetooth and Wi-Fi devices?

(a) Bluetooth uses 2.4 GHz radio frequency band, whereas Wi-Fi can use 2.4 GHz or 5 GHz frequency band.
(b) Bluetooth is used for Wireless Local Area Networks (WLAN) only, whereas Wi-Fi is used for Wireless Wide Area Networks (WWAN) only.

both are correct.

13.With reference to micro-irrigation, which of the following statements is/are correct?

Fertilizer/nutrient loss can be reduced. 

14.What could be the main reason/reasons of the formation of African and Eurasian desert belt?

It is located in the sub-tropical high pressure cells. 

15.What is “Virtual Private Network”? 

It is a computer network across a public internet that provides users access to their organization’s network while maintaining the security of the information transmitted.

16.Consider the following:

1. Carbon dioxide
2. Oxides of Nitrogen
3. Oxides of Sulphur
Which of the above is/are the emission/emissions from coal combustion at thermal power plants?

Answer:-

(a) 1, 2 and 3.

17.Satellites used for telecommunication relay are kept in a geostationary orbit. A satellite is said to be in such an orbit when:

1. The orbit is geosynchronous.
2. The orbit is circular.
3. The orbit lies in the plane of the Earth’s equator. 

Answer:-

(a) 1, 2 and 3.

18.Which one of the following statements appropriately describes the “fiscal stimulus”?

It is an intense affirmative action of the Government to boost economic activity in the country.

19.A rapid increase in the rate of inflation is sometimes attributed to the “base effect”. What is “base effect”? 

It is the impact of the price levels of previous year on the calculation of inflation rate.

20.India is regarded as a country with “Demographic Dividend”. This is due to

Its high population in the group of 15-64 years.

21.Regarding “carbon credits”, which one of the following statements is correct?

(a) The carbon credit system was ratified in conjunction with the Kyoto Protocol.
(b) Carbon credits are awarded to countries or groups that have reduced greenhouse gases below their emission quota.
(c) The goal of the carbon credit system is to limit the increase of carbon dioxide emission.
(d)all of the above.

22.The function of heavy water in a nuclear reactor is to

Slow down the speed of neutrons.

23.India is home to lakhs of persons with disabilities. What are the benefits available to them under the law?

1. Free schooling till the age of 18 years in government-run schools.
2. Preferential allotment of land for setting up business.
3. Ramps in public buildings.

Which of the statements given above is/are correct?

(a) 1, 2 and 3.

24.The authorization for the withdrawal of funds from the Consolidated Fund of India must come from

The Parliament of India.

25.All revenues received by the Union Government by way of taxes and other receipts for the conduct of Government business are credited to the

Consolidated Fund of India.

Model Exam Paper 1

Most important points for upcoming technical exam & Interview

1.The standard unit for the rate of heat transferred is the watt (W), defined as one joule per second.

2.specific heat is the amount of heat per unit mass required to raise the temperature by one degree Celsius.

3.Work input is directly proportional to heat and the constant of proportionality is called joule’s equivalent & mechanical equivalent of heat

4.The enthalpy of a system is equal to the system's internal energy plus the product of its pressure and volume.

H=U+pv

5.the amount of entropy is also a measure of the molecular disorder, or randomness, of a system.

6.The zeroth law of thermodynamics states that if two thermodynamic systems each are in thermal equilibrium with a third, then they are in thermal equilibrium with each other.

7.The first law, also known as Law of Conservation of Energy, states that energy cannot be created or destroyed in an isolated system.

8.The second law of thermodynamics states that the entropy of any isolated system always increases.

9.Merchant circle diagram is used to analyze the forces acting in metal cutting.

10.With the slope, n and intercept, c, Taylor derived the simple equation as VTn = C where, n is called, Taylor's tool life exponent. The values of both 'n' and 'c' depend mainly upon the tool-work materials and the cutting environment (cutting fluid application).

11.ECONOMIC ORDER QUANTITY (EOQ) MODEL. The economic order quantity (EOQ) is the order quantity that minimizes total holding and ordering costs for the year.

12.Resistance increases, in case of conductor, with increase in temperature and decreases, in case of insulator, due to increase in temperature. So, with increase in temperature, the resistance of conductor increases. But in case of insulator, there is a large energy gap between the two bands.

13.important reasons for grounding electrical currents is that it protects your appliances

14.MCB

Its basic function is to interrupt current flow after a fault is detected.

15.Voltage-ELCBis a voltage operated circuit breaker. The device will function when the Current passes through the ELCB.

16.Voltage-ELCB contains relay Coil which it being connected to the metallic load body at one end and it is connected to ground wire at the other end.

17.Conventional Manufacturing Process

Conventional machining uses tools, such as lathes, milling machines, boring machines, drill presses, or others, with a sharp cutting tool to remove material to achieve the desired geometry. It is nothing but the process in which the material is removed by the direct contact between tool and workpiece.

18.What is kinematics?

Kinematicsis a branch of classical mechanics that describes the motion of points, bodies (objects), and systems of bodies (groups of objects) without considering the forces that caused the motion.

19.What is dynamics of machined?

Dynamics is the branch of applied mathematics (specifically classical mechanics) concerned with the study of forces and torques and their effect on motion, as opposed to kinematics, which studies the motion of objects without reference to these forces.

20.Four bar chain mechanism.

In this mechanism, the link which can make complete rotation is known as crank (link 2). The link which oscillates is known as rocker or lever (link 4).

21.What is gyroscope?

‍

a device consisting of a wheel that turns very quickly inside a frame and does not change position when the frame is moved

22.What is gear train?

A gear train is a mechanical system formed by mounting gears on a frame so the teeth of the gears engage. Gear teeth are designed to ensure the pitch circles of engaging gears roll on each other without slipping, providing a smooth transmission of rotation from one gear to the next. Eg. See bicycle gearing.

23.Total quality management

Total quality management consists of organization-wide efforts to "install and make permanent a climate where employees continuously improve their ability to provide on demand products and services that customers will find of particular value."

24.Liquid-in-Glass Thermometer. The liquid-in-glass thermometer is one of the most common instruments used today to measure temperature.

25.There are a few different instruments used to measure air pressure. One common one is the barometer. Another type of pressure gauge is the Bourdon tube. It is used to measure the pressure of gases or liquids in a sealed container.

26.The pitot tube measures the fluid flow velocity by converting the kinetic energy of the flow into potential energy.

27.Electronic governance or e-governance is the application of information and communication technology (ICT) for delivering government services, exchange of information, communication transactions, integration of various stand-alone systems and services between government-to-citizen (G2C), government-to-business (G2B)

28.The unique application of ICT in business processes such as design, engineering, manufacturing, purchasing, physical distribution, production management and supply chain management.

29.Fiscal Incentives are tax measures geared to encourage industrial development. These incentives are designed to assist manufacturing entrepreneurship.

30.The Payment of Gratuity (Amendment) Bill, 2018 has been passed by Lok Sabha on 15th March, 2018 and by the Rajya Sabha on 22nd March, 2018, has been brought in force on 29th March, 2018. Background: The Payment of Gratuity Act, 1972 applies to establishments employing 10 or more persons.

31.What is a designated trade?

Designated trade is any trade/occupation/any subject field in engineering/ non engineering/ technology/any vocational course as notified by the Government.

32.When was the Apprentices Act enacted and implemented?

The Apprentices Act was enacted in 1961 and implemented w.e.f. 01.03.1962. It extends to the whole of India.

33.The Apprentices Act was first amended in 1973 to include training of graduate and diploma engineers as “graduate” and “technician” apprentices.

34.How many times the Apprentices Act, 1961 has been amended so far?

times (1973, 1986, 1997, 2007 and 2014)

35.National Apprenticeship Promotion Scheme is a Scheme launched by Ministry of Skill Development and Entrepreneurship.

36.Ministry of Skill Development & Entrepreneurship is responsible for monitoring the implementation of the Apprenticeship act.

37.An apprentice who has age less or equal to 21 Years is a fresher.

38.The size of a cam depends upon

base circle

39.Base circle is the smallest circle that can be drawn to the cam profile.

40.Pitch circle is a circle drawn from the centre of the cam through the pitch points.

41.Prime circle is the smallest circle that can be drawn from the centre of the cam and tangent to the pitch curve.

42. What is pressure angle?

The angle between the direction of the follower motion and a normal to the pitch curve that is called pressure angle.

43.The cam follower generally used in automobile engines is spherical faced follower.

44.The cam follower extensively used in air-craft engines is roller follower.

45.Why Ofset is provided to a cam follower mechanism

For minimise the side thrust.

46.For low and moderate speed engines, the cam follower should move with

simple harmonic motion.

47.For high speed engines, the cam follower should move with

cycloidal motion

48.Only cycloidal motion gives maximum acceletation. So it is considered the most dynamic cam- follower mechanism.

49.UP became the first state to endorse which draft law?

Muslim Women (Protection of Rights on Marriage) Act

50.Which state passed a bill awarding death penalty to those found guilty of raping minors in Dec, 2017?

Madhya Pradesh

51.What does SAUBHAGYA stand for?

Pradhan Mantri Sahaj Bijli Har Ghar Yojana