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Electrical Machines
In a synchronous motor torque or load angle δ ------------- with increase in load
remains unaffected
decreases
increases
None of these
remains unaffected
decreases
increases
None of these
Answer
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Related Question
Electrical Machines
A large series motor is never started without some mechanical on it because otherwise it will
Open fuse or circuit breaker.
Draw too much current.
Produce sparking at brushes.
Develop excessive speed and damage itself.
Open fuse or circuit breaker.
Draw too much current.
Produce sparking at brushes.
Develop excessive speed and damage itself.
Answer
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Electrical Machines
Reluctance and hysteresis motors are the types of which electrical motor?
1 - Φ synchronous motor.
3 - Φ induction motor.
Stepper motor.
DC motor.
1 - Φ synchronous motor.
3 - Φ induction motor.
Stepper motor.
DC motor.
Answer
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Electrical Machines
In alternator, the rotary part is
magnetic field poles.
core.
none of these.
armature.
magnetic field poles.
core.
none of these.
armature.
Answer
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Electrical Machines
What is the frequency of rotor current of 50 Hz induction motor operating at 4% slip?
50Hz
2HZ
2.5Hz
1 Hz
50Hz
2HZ
2.5Hz
1 Hz
Answer
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Electrical Machines
A motor operates in stable region at which of the following slip?
unity slip
high slip region
low slip region
both 1 and 2
unity slip
high slip region
low slip region
both 1 and 2
Answer
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