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Electrical Machines
In induction motor especially the cage rotors slots are nearly parallel to shaft axis. This is called
slip.
crawling.
cogging.
skewing.
slip.
crawling.
cogging.
skewing.
Answer
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Related Question
Electrical Machines
A synchronous motor will deliver maximum power when
load angle is 0°.
load angle is 45°.
input power factor is unity.
load angle is equal to internal angle θ.
load angle is 0°.
load angle is 45°.
input power factor is unity.
load angle is equal to internal angle θ.
Answer
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Electrical Machines
A DC series motor has which of the following characteristics?
Has a poor torque.
Has a almost constant speed.
Can be started easily without load.
Has its field winding consinting of thick wire and less no of turns.
Has a poor torque.
Has a almost constant speed.
Can be started easily without load.
Has its field winding consinting of thick wire and less no of turns.
Answer
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Electrical Machines
If the load current and the flux of a DC motor are held constant and voltage applied across its armature is increased by 5%, the speed of the motor will
increase by 5 %.
reduce by 5 %.
remain unchanged.
depend on other factors.
increase by 5 %.
reduce by 5 %.
remain unchanged.
depend on other factors.
Answer
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Electrical Machines
Compensating winding are used to rectify the flux density waveform at
interpole region.
throughout the air gap.
region under main pole.
None of these
interpole region.
throughout the air gap.
region under main pole.
None of these
Answer
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Electrical Machines
Voltage regulation can be determined by which of the following?
ZPF method.
Synchronous impedance method.
All of these
MMf method.
ZPF method.
Synchronous impedance method.
All of these
MMf method.
Answer
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