AP ECET EEE 2018-5

1. Double squirrel cage induction motor has ____

A. Two series windings in stator
B. Two series windings in rotor
C. Two parallel windings in rotor
D. Two parallel windings in stator

Answer : C. Two parallel windings in rotor
Explanation:-

2. A capacitor start,capacitor run induction motor is basically

A. two phase motor
B. DC motor
C. commutator motor
D. synchronous motor

Answer : A. two phase motor
Explanation:-

3. Which of the following motor is most suitable for computer drive printers?

A. Reluctance motor
B. Hysteresis motor
C. Shaded pole motor
D. Stepper motor

Answer : D. Stepper motor
Explanation:-

4. Ash content of Indian coal is approximately

A. 5%
B. 8%
C. 10%
D. 25%

Answer : D. 25%
Explanation:-

5. A kaplan turbine is _____

A. A low head axial flow turbine
B. A high head mixed flow turbine
C. inward flow impulse turbine
D. outward flow reaction turbine

Answer : A. A low head axial flow turbine
Explanation:-

6. The nuclear reactor starts generation when

A. The safety rod is inserted into the core
B. The safety rod is withdrawn from the core
C. The shim rod is inserted into the core
D. The shim rod is withdrawn from the core

Answer : B. The safety rod is withdrawn from the core
Explanation:-

7. The maximum demand of a consumer is 2Kw and his daily energy consumption is 20 units. His load factor is ______

A. 10.15 5
B. 41.66 %
C. 50 %
D. 75 %

Answer : B. 41.66 %
Explanation:-

8. It is always economical to improve the power factor of an installation to

A. zero
B. unity
C. A little less than unity lag
D. A little less than unity lead

Answer : C. A little less than unity lag
Explanation:-

9. A 3-phase breaker is rated at 2000MVA,33KV. Its breaking current will be _____

A. 35 KA
B. 49 KA
C. 70 KA
D. 89 KA

Answer : A. 35 KA
Explanation:-

10. The pick-up value of a relay is 7.5A and fault current in relay coil is 37.5A. Its plug setting multiplier is ______

A. 10
B. 7.5
C. 2.5
D. 5

Answer : D. 5
Explanation:-