NCVT ALL INDIA TRADE TEST PAPER FOR ITI FITTER TRADE AUG 2018 SEM 4 PART 1

1) The composition of soft solder is 

Lead-70%, tin-30%

Lead-37%, tin-63%

L.ead-50%, tin-50%

L.ead-63%, tin-37%

Correct answer

Lead-37%, tin-63%

2) The filler metal used in brazing has a melting point of above 

200°C

300°C

420°C

520°C

Correct answer

420°C

3) The commonly used flux in brazing is 

Lead sulphide

Borax

Resin

Zinc chloride

Correct answer

Borax

4) A high viscosity index indicates relatively …………………. changes in viscosity of the oil with the temperature. 

a) Larger

b) Smaller

c) Constant

d) None of these

Correct answer

b) Smaller

5) ………………… is the property of lubricating oil due to which the oil particles stick with the metal surfaces. 

a) Oiliness

b) Pour point

c) Adhesiveness

d) None of these

Correct answer

c) Adhesiveness

6) The use of jigs and fixtures 

a) Facilitates deployment of less skilled labor for the production

b) Eliminates pre-machining operations like marking, measuring, laying out, etc.

c) Reduces manual handling operations

d) All of these

Correct answer

d) All of these

7) The following is(are) the function(s) of a jig 

a) Holding the workpiece

b) Locating the workpiece

c) Guiding the cutting tool

d) All of these

Correct answer

d) All of these

8) Fixtures are used in 

a) Milling

b) Shaping

c) Turning

d) All of these

Correct answer

d) All of these

9) The following holds the workpiece securely in a jig or fixture against the cutting forces 

Guiding device

Clamping device

Indexing device

Locating device

Correct answer

Clamping device

10) The following material is commonly used for making locating and clamping devices 

Die steel

Low carbon steel

High carbon steel

High-speed steel

Correct answer

High carbon steel

11) The following type of jig suits best for drilling of holes in hollow cylindrical components, with relatively smaller outside and inside diameters, such as bushes 

Box type jig

Pot type jig

Open type jig

Solid type jig

Correct answer

Pot type jig

12) The following type of jig is used to drill a series of the equidistant hole along a circle 

Index jig

Pot type jig

Open type jig

Plate type jig

Correct answer

Index jig

13) The jigs and fixtures can be constructed through 

a) Casting

b) Fabrication

c) Welding

d) All of these

Correct answer

d) All of these

14) Which material is used for pipes which conduct water and air? 

Copper

Ceramic

Plastic

Stainless steel

Correct answer

Copper

15) Which of the following valves is used to maintain pressure in the system? 

Check valve

Pressure relief valve

Manual control valve with variable flow plug

Pneumatic control valve with variable-flow plug

Correct answer

Pressure relief valve

16) ……………….. is the property of lubricating oil due to which the oil retains a thin film between the two surfaces. 

a) Oiliness

b) Film Strength

c) Adhesiveness

d) None of these

Correct answer

b) Film Strength

17) Maintenance consists of the following action(s) 

a) Replacement of components

b) Repair of components

c) Service of components

d) All of these

Correct answer

d) All of these

18) Class-A fire consists of fire due to 

Oil

Chemical

Transformer

Wood

Correct answer

Wood

19) Water is used to extinguish 

a) Class-A fires

b) Class-B fires

c) Class-C fires

d) All of these

Correct answer

a) Class-A fires

20) The following class of fire occurs in electrical equipment 

a) Class-A fires

b) Class-B fires

c) Class-C fires

d) All of these

Correct answer

c) Class-C fires

21) The following extinguisher is suitable for cotton or other textile fire 

Soda acid

Foam

Dry chemicals

Water

Correct answer

Dry chemicals

22) ……………. is best suited to extinguish oil or flammable liquid fire. 

Soda acid

Dry chemical

Vaporizing liquid

Foam

Correct answer

Foam

23) An alloy is a ……………. 

A mixture of two non-metals

Pure metal

A mixture of metals in any proportion

A mixture of metals in a fixed proportion

Correct answer

A mixture of metals in a fixed proportion

24) Bronze is an alloy of 

Copper and Tin

Copper and Nickel

Copper and Aluminium

Copper and iron

Correct answer

Copper and Tin

25) Which of the following is not an alloy? 

Bronze

Brass

Copper

Steel

Correct answer

Copper