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Electrical Machines
For the above problem, find the induced voltage of an alternator of it is to deliver a load of 100 A at power factor of 0.8 lagging with terminal voltage of 200 V.
222 V.
220 V.
230 V.
225 V.
222 V.
220 V.
230 V.
225 V.
Answer
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Related Question
Electrical Machines
The power input to a 3 - φ induction motor is 60 kW and stator loss is 1 kW the rotor cu loss per phase is
slip X 59 / 3.
1.
slip X 69 / 3.
slip X 50 / 3.
slip X 59 / 3.
1.
slip X 69 / 3.
slip X 50 / 3.
Answer
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Electrical Machines
Armature flux is.............with respect to main field flux or main field poles?
rotates same direction
stationary
rotates opposite direction
None of these
rotates same direction
stationary
rotates opposite direction
None of these
Answer
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Electrical Machines
Capacitor start capacitor run provides
high staring torque and high power factor.
high staring torque only.
high power factor only.
none.
high staring torque and high power factor.
high staring torque only.
high power factor only.
none.
Answer
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Electrical Machines
Due to magnetic saturation, the flux per pole in a DC machine without brush shift
increases in generators but decreases in motor with load.
increases in both the generators and the motors with load.
decreases in both generators and the motors with load.
decreases in generators and increases in motor with load.
increases in generators but decreases in motor with load.
increases in both the generators and the motors with load.
decreases in both generators and the motors with load.
decreases in generators and increases in motor with load.
Answer
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Electrical Machines
When a synchronous motor is running at synchronous speed, the damper winding produces
eddy current torque.
both 1 and 2.
no torque.
damping torqe.
eddy current torque.
both 1 and 2.
no torque.
damping torqe.
Answer
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