Single phase induction motors

11. Speed control of a universal motor is achieved by

Varying field flux with tapped field windings
Connecting rheostat in series
Applying variable voltage by means of silicon controlled rectifier
All of the above methods

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achieved by" class="read-more button" href="https://exam.pscnotes.com/mcq/speed-control-of-a-universal-motor-is-achieved-by/#more-58279">Detailed SolutionSpeed control of a universal motor is achieved by

12. A single-phase induction motor is

inherently self-starting with high torque
inherently self-starting with low torque
inherently non-self-starting with low torque
inherently non-self-starting with high torque

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is" class="read-more button" href="https://exam.pscnotes.com/mcq/a-single-phase-induction-motor-is/#more-58246">Detailed SolutionA single-phase induction motor is

13. If the capacitor of a single-phase motor is short-circuited

the motor will not start
the motor will run
the motor will run in reverse direction
the motor will run in the same direction at reduced r.p.m.

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class="read-more button" href="https://exam.pscnotes.com/mcq/if-the-capacitor-of-a-single-phase-motor-is-short-circuited/#more-57958">Detailed SolutionIf the capacitor of a single-phase motor is short-circuited

14. If starting winding of a single-phase induction motor is left in the circuit, it will

run faster
spark at light loads
draw excessive current and overheat
run slower

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href="https://exam.pscnotes.com/mcq/if-starting-winding-of-a-single-phase-induction-motor-is-left-in-the-circuit-it-will/#more-57946">Detailed SolutionIf starting winding of a single-phase induction motor is left in the circuit, it will

15. Which of the following motor will give relatively high starting torque ?

Capacitor start motor
Capacitor run motor
Split phase motor
Shaded pole motor

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class="screen-reader-text">Which of the following motor will give relatively high starting torque ?

16. Which of the following motors has highest starting torque ?

Repulsion motor
Shaped pole motor
Capacitor-start motor
Split-phase motor

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17. The rotor developed by a single-phase motor at starting is

more than rated torque
rated torque
less than the rated torque
zero

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at starting is" class="read-more button" href="https://exam.pscnotes.com/mcq/the-rotor-developed-by-a-single-phase-motor-at-starting-is/#more-57454">Detailed SolutionThe rotor developed by a single-phase motor at starting is

18. Which of the following motor will have relatively higher power factor ?

Capacitor run motor
Shaded pole motor
Capacitor start motor
Split phase motor

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href="https://www.youtube.com/channel/UCNHT8lW-JmLC68rjBfZhdkg?sub_confirmation=1" target="_blank" class="youtube-subscribe-button"> Subscribe on YouTube href="https://exam.pscnotes.com/mcq/which-of-the-following-motor-will-have-relatively-higher-power-factor/#more-57095">Detailed SolutionWhich of the following motor will have relatively higher power factor ?

19. Speed torque characteristic of a repulsion induction motor is similar to that of a D.C.

shunt motor
series motor
A. shunt motor B. series motor C. compound motor
separately excited motor

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class="read-more button" href="https://exam.pscnotes.com/mcq/speed-torque-characteristic-of-a-repulsion-induction-motor-is-similar-to-that-of-a-d-c/#more-56860">Detailed SolutionSpeed torque characteristic of a repulsion induction motor is similar to that of a D.C.

20. The direction of rotation of an hysteresis motor is determined by

interchanging the supply leads
position of shaded pole with respect to main pole
retentivity of the rotor material
none of these

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of an hysteresis motor is determined by" class="read-more button" href="https://exam.pscnotes.com/mcq/the-direction-of-rotation-of-an-hysteresis-motor-is-determined-by/#more-56854">Detailed SolutionThe direction of rotation of an hysteresis motor is determined by

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