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Electrical Machines
A smaller air gap in a induction motor helps to
reduce the chance of crawling.
reduce the magnetizing current.
increase the starting torque.
reduce the chance of cogging.
reduce the chance of crawling.
reduce the magnetizing current.
increase the starting torque.
reduce the chance of cogging.
Answer
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Related Question
Electrical Machines
The current drawn by the armature of DC motor is directly proportional to
None of above.
The voltage across the terminals.
The torque required.
The speed of motor.
None of above.
The voltage across the terminals.
The torque required.
The speed of motor.
Answer
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Electrical Machines
Which of the following motor has negative speed regulation?
Cumulative compound motors
Shunt motor
Differential compound motor
Series motor
Cumulative compound motors
Shunt motor
Differential compound motor
Series motor
Answer
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Electrical Machines
An induction motor has synchronous speed of 1500 rpm. What will be the slip when it is running at a speed of 1450 rpm?
+3.33%
-3.33%
-3%
+3%
+3.33%
-3.33%
-3%
+3%
Answer
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Electrical Machines
Capacitor fitted with ceiling / table fans is of the value of
2 - 3 µF.
1 - 2 µF.
5 - 10 F.
0.1 µF.
2 - 3 µF.
1 - 2 µF.
5 - 10 F.
0.1 µF.
Answer
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Electrical Machines
No load primary current in a transformer
lags behind applied voltage somewhat less than 90Ã
leads the applied voltage somewhat less than 90Ã&
leads the applied voltage by exactly 90Â&
lags behind applied voltage by exactly 90Â&am
lags behind applied voltage somewhat less than 90Ã
leads the applied voltage somewhat less than 90Ã&
leads the applied voltage by exactly 90Â&
lags behind applied voltage by exactly 90Â&am
Answer
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