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Electrical Machines
A 3-phase 6 pole 50 Hz induction motor is running at 5% slip.What is the speed of the motor?
900 rpm
850 rpm
950 rpm
1000 rpm
900 rpm
850 rpm
950 rpm
1000 rpm
Answer
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Related Question
Electrical Machines
To eliminate 5th harmonic in the induced voltage phase breadth should be
30°
18°
36°
72°
30°
18°
36°
72°
Answer
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Electrical Machines
Shunt field of DC generators consists of--------number of turns and ---------- conductors respectively
less and thick
large and thin
less and thin
large and thick
less and thick
large and thin
less and thin
large and thick
Answer
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Electrical Machines
In a DC generator the emf generated by the armature is maximum when
induced voltage is high.
rate of change of flux is maximum.
shaft rotation is high.
rate of change of flux is minimum.
induced voltage is high.
rate of change of flux is maximum.
shaft rotation is high.
rate of change of flux is minimum.
Answer
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Electrical Machines
In travelling cranes for hoisting and lowering which type of motor is preferred?
AC slip ring motor.
Single phase induction motor.
Synchronous motor.
DC series motor.
AC slip ring motor.
Single phase induction motor.
Synchronous motor.
DC series motor.
Answer
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Electrical Machines
The wound rotor type IM is used for____________ speed operation.
minimum.
constant.
variable.
maximum.
minimum.
constant.
variable.
maximum.
Answer
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