Single phase induction motors

42. In a split phase motor, the running winding should have

high resistance and low inductance
low resistance and high inductance
high resistance as well as high inductance
low resistance as well as low inductiance

Join Our Telegram Channel

48.3-47.8 11.4-42.9 11.4-132.3 11.4-132.3s0-89.4-11.4-132.3zm-317.5 213.5V175.2l142.7 81.2-142.7 81.2z"/> Subscribe on YouTube
should have" class="read-more button" href="https://exam.pscnotes.com/mcq/in-a-split-phase-motor-the-running-winding-should-have/#more-44167">Detailed SolutionIn a split phase motor, the running winding should have

43. In which single-phase motor, the rotor has no teeth or winding ?

Split phase motor
Reluctance motor
Hysteresis motor
Universal motor

Subscribe on YouTube

Join Our Telegram Channel

class="read-more button" href="https://exam.pscnotes.com/mcq/in-which-single-phase-motor-the-rotor-has-no-teeth-or-winding/#more-43791">Detailed SolutionIn which single-phase motor, the rotor has no teeth or winding ?

44. A centrifugal switch is used to disconnect starting winding when motor has

run for about 1 minute
run for about 5 minutes
picked up about 50 to 70 per cent of rated speed
picked up about 10 to 25 per cent of rated speed

Join Our Telegram Channel
Subscribe on YouTube

title="A centrifugal switch is used to disconnect starting winding when motor has" class="read-more button" href="https://exam.pscnotes.com/mcq/a-centrifugal-switch-is-used-to-disconnect-starting-winding-when-motor-has/#more-43780">Detailed SolutionA centrifugal switch is used to disconnect starting winding when motor has

45. In repulsion motor direction of rotation of motor

Is opposite to that of brush shift
Is the same as that of brush shift
Is independent of brush shift
nan

Join Our Telegram Channel
Subscribe on YouTube

title="In repulsion motor direction of rotation of motor" class="read-more button" href="https://exam.pscnotes.com/mcq/in-repulsion-motor-direction-of-rotation-of-motor/#more-43481">Detailed SolutionIn repulsion motor direction of rotation of motor

46. Which of the following statements regarding repulsion-start induction motor is incorrect ?

It requires more maintenance of commutator and other mechanical devices
It makes quite a bit of noise on starting
In fractional horse power motors, it has replaced the capacitor motors

Detailed SolutionWhich of the following statements regarding repulsion-start induction motor is incorrect ?

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

Become unstable
Draw excessive armature current and may burn out
Fall out of synchronism and come to stand still
Run as induction motor

Detailed SolutionIn case of

Join Our Telegram Channel
512"> Subscribe on YouTube

a reluctance motor, when the load is increased so that it cannot maintain synchronous speed the motor will

48. In a

through resistance
through reactances
solidly

Detailed SolutionIn a

49. If the centrifugal switch does not open at 70 to 80 percent of synchronous speed of motor, it would result in

Damage to the starting winding
Damage to the centrifugal switch
Overloading of running winding
None of the above

Join Our Telegram Channel
Subscribe on YouTube

the centrifugal switch does not open at 70 to 80 percent of synchronous speed of motor, it would result in" class="read-more button" href="https://exam.pscnotes.com/mcq/if-the-centrifugal-switch-does-not-open-at-70-to-80-percent-of-synchronous-speed-of-motor-it-would-result-in/#more-43081">Detailed SolutionIf the centrifugal switch does not open at 70 to 80 percent of synchronous speed of motor, it would result in
Page 1Page 2Page 3Page 4Page 5
Test 1Test 2
Exit mobile version