Single Phase Induction Motors - Interview Questions | Exam2Win

Take a timed mock test specifically for Single Phase Induction Motors.

96. If the centrifugal switch of a two-value capacitor motor using two capacitors fails to open then

A. motor will not come upto speed

B. motor will not carry the load

C. current drawn by the motor will be excessively high

D. electrolytic capacitor will, in all probability, suffer break down

Explanation:

97. If a D.C. series motor is operated on A.C. supply, it will

A. spark excessively

B. have poor efficiency

C. have poor power factor

D. all of the above

Explanation:

98. Locked rotor current of a shaded pole motor is

A. equal to full load current

B. less than full load current

C. slightly more than full load current

D. several times the full load current

Explanation:

99. In case of a reluctance motor, when the load is increased so that it cannot maintain synchronous speed the motor will

A. become unstable

B. draw excessive armature current and may burn out

C. fall out of synchronism and come to stand still

D. run as induction motor

Explanation:

100. Two-value capacitor motor finds increased application as compressor motor in small home air-conditioners because

A. it is comparatively cheaper

B. it has almost non-destructible capacitor

C. it has low starting as well as running currents at relatively high power factor

D. it is quiet in operation

Explanation: