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Electrician Set-1
Single Phase Motors
17

Single Phase Motors MCQ - Electrician (Set-1) with Answers

17) Which one of the following single-phase motor perform with better power factor ?

Universal motor

Repulsion motor

Capacitor-start motor

Capacitor-run motor

Answer is:

Repulsion motor

Single Phase Motors MCQ - Electrician (Set-1) with Answers

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Related Single Phase Motors MCQ - Electrician (Set-1) with Answers

18) Which type of motor is generally used in a portable electric blower ?

Repulsion motor

Universal motor

Capacitor-run motor

Hysteresis motor

Answer is:

Capacitor-run motor

19) If a winding makes electrical contact with the stator core, the winding is said to be :

short-circuited

open-circuited

closed

grounded

Answer is:

grounded

20) A capacitor-start induction-run, single-phase motor has its capacitance replaced by an inductor of equivalent reactance value. If the motor is connected to the supply, it will

run in the reverse direction

not start with load

run with low torque taking a lower current

start but will not take any load

Answer is:

not start with load

21) A capacitor-start, single-phase motor will usually have a P.F. of :

0.8 leading

0.8 lagging

unity

none of the stated above

Answer is:

0.8 lagging

Single Phase Motors MCQ - Electrician (Set-1) with Answers

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