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Electrical Machines
The slip of an induction motor normally does not depend on
core loss component.
synchronous speed.
shaft torque.
rotor speed.
core loss component.
synchronous speed.
shaft torque.
rotor speed.
Answer
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Related Question
Electrical Machines
What is the frequency of a alternator, if P = number of poles and N = revolution made per second?
120 / PN Hz.
120P / N Hz.
PN / 2 Hz.
120N / P Hz.
120 / PN Hz.
120P / N Hz.
PN / 2 Hz.
120N / P Hz.
Answer
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Electrical Machines
The slight curvature at the lower end of the OCC of a self excited DC generator is due to
high field resistance.
high speed.
residual flux.
magnetic inertia.
high field resistance.
high speed.
residual flux.
magnetic inertia.
Answer
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Electrical Machines
Resistance commutation is used generally in case of
None of these
DC machines bellow 5 kW.
DC machines above 10 kW.
fractional kW DC machines.
None of these
DC machines bellow 5 kW.
DC machines above 10 kW.
fractional kW DC machines.
Answer
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Electrical Machines
What are slot wedges in a DC machine made of?
Silicon steel.
Mild steel.
Fibre.
Cast iron.
Silicon steel.
Mild steel.
Fibre.
Cast iron.
Answer
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Electrical Machines
To get the speed of DC motor is more than normal without wastage of electrical energy _____________ is used.
Rheostatic control.
Ward Leonard control.
None of above.
Any of above method.
Rheostatic control.
Ward Leonard control.
None of above.
Any of above method.
Answer
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