MECHANICAL ENGINEERING MCQ SECTION 3

21. Reciprocating pumps are no more to be seen in industrial applications (in comparison to

centrifugal pumps) because of

(A) high initial and maintenance cost

(B) lower discharge

(C) lower speed of operation

(D) the necessity of air vessel

22. Energy from the gravitational field is energy obtained from

(A) wind

(B) biomass

(C) coal

(D) tides

23. Mercury does not wet glass. This is due to the property of liquid is known as

(A) adhesion

(B) cohesion

(C) surface tension

(D) viscosity

24. The stress-strain relation of the Newtonian fluid is

(A) linear

(B) parabolic

(C) hyperbolic

(D) inverse type.

25. The ignition quality of petrol is expressed by

(A) Cetane number

(B) Octane number

(C) Calorific value

(D) All of these

26. The front view of a cube, when it rests on HP on one of its faces and one other face is parallel to VP, is

(A) Square

(B) Rectangle

(C) Parallelogram

(D) Triangle

27. In a solar panel, the metal used is ______.

(A) gold

(B) copper

(C) silver

(D) nickel

28. What is the calorific value of diesel?

(A) 45 kJ/g

(B) 46 kJ/g

(C) 47 kJ/g

(D) 48 kJ/g

29. The fuel used in the nuclear reactor is ______.

(A) Cadmium

(B) Radium

(C) Uranium

(D) Thorium

30. The radiation in the sunlight that gives us the feeling of hotness is ______.

(A) visible radiation

(B) infra-red

(C) red

(D) ultra-violet