ECET EEE Model Paper-1 Part6

1. The temperature inside a furnace is usually measured by which of the following

A. Optical pyrometer
B. Mercury thermo meter
C. Alcohol thermo meter
D. Any of the above

Answer : Optical pyrometer
Explanation:-

2. __________ Has least range of speed control

A. Slip ring induction motor
B. Synchronous motor
C. D.C. shunt motor
D. Schrage motor

Answer : Synchronous motor
Explanation:-

3. In induction heating …………… is abnormally high

A. Phase angle
B. Frequency
C. Current
D. Voltage

Answer : Frequency
Explanation:-

4. Which of the following machines has heavy fluctuation of load

A. Printing machine
B. Punching machine
C. Planer
D. Lathe

Answer : Punching machine
Explanation:-

5. The peak Value of the sine wave is 200 volts. Its average value is

A. 127.4 volts
B. 141.4 volts
C. 282.18 volts
D. 200 volts

Answer : 127.4 volts
Explanation:-

6. Power factor of an induction motor under no-load conditions will be closer to

A. 0.2 lagging
B. 0.2 leading
C. Unity
D. 0.5 lagging

Answer : 0.2 lagging
Explanation:-

7. The ratio of active power to apparent power is known as…………………factor

A. Demand
B. Load
C. Power
D. Form

Answer : Power
Explanation:-

8. The range of efficiency for shaded pole motor is

A. 95% to 99%
B. 80% to 90%
C. 50% to 75%
D. 5% to 35%

Answer : 5% to 35%
Explanation:-

9. Gray iron is usually welded by……… Welding

A. Gas
B. Arc
C. Resistance
D. MIG

Answer : Gas
Explanation:-

10. ……………method of starting a three phase instruction motor needs six terminals

A. Star delta
B. Resistance starting
C. Auto transformer
D. None of the above

Answer : Star delta
Explanation:-