1. The thread angle of Whit worth thread form is

55°

60°

90°

(D)None of these

2. Which of the following processes will produce the best surface finish

(A)Turning

Lapping

Grinding

(D)Filing

3. In the turning operation, RPM of the spindle depends on

Length of the job

Diameter of the job

Both of the above

(D)None of the above

4. The term BTU stands for

Basic Thermal Unit

British Thermal Unit

Briler Temperature Unit

(D)None of these

5. Absolute pressure is equal to

(A)Gauge pressure

Gauge pressure Atmospheric pressure

Gauge Pressure Atmospheric pressure

(D)Atmospheric pressure

6. One ton refrigeration is equivalent to

12,000 Btuh

10,000 Btuh

250 Btu per min

1,000 Btuh

7. Pyrometer is used to measure

(A)Intensity of light

High Temperatures

(C)High Voltage

(D)Low Temperatures

8. For underground cables, the depth of the trench is approximately

cm

60 cm

(C)200 cm

(D)120 cm

9. During which test of the induction motor, the reduced voltage is applied

load test

Blocked rotor test

Insulation test

(D)Resistance test

10. The range of a voltmeter can be increased by connecting

(A)High resistance in series

Low resistance in series

High resistance in parallel

(D)Depends on the range of the existing voltmeter

11. International ohm is defined as the resistance of

column of mercury

A cube of copper

A cylinder of silver

wire of nichrome

12. The laminations of a transformer are made from

(A)Copper

Mild steel

Nickel alloy steel

Zinc-copper alloy