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Electrical Machines
In single phase rotary converter the number of slip rings will be
six.
three.
four.
two.
six.
three.
four.
two.
Answer
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Related Question
Electrical Machines
The total core loss of a 400 V, 50 Hz transformer is 2400W, when it is supplied by 200 V, 25 Hz loss is 800W. Calculate eddy current loss and hysteresis loss?
1000W , 1400W
1600W, 800W
800W, 1600W
1400W, 1000W
1000W , 1400W
1600W, 800W
800W, 1600W
1400W, 1000W
Answer
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Electrical Machines
Two mechanically coupled alternators deliver power at 50 Hz and 60 Hz respectively. The highest speed of the alternators is
3000 rpm.
500 rpm.
3600 rpm.
600 rpm.
3000 rpm.
500 rpm.
3600 rpm.
600 rpm.
Answer
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Electrical Machines
The noise resulting from vibrations of lamination set by magnetic forces, is termed as
zoom.
hum.
magnetostriction.
boo.
zoom.
hum.
magnetostriction.
boo.
Answer
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Electrical Machines
In dc machine armature windings are placed on rotor because of the necessity for
electromechanical energy conversion.
development of torque.
generation of voltage.
commutation.
electromechanical energy conversion.
development of torque.
generation of voltage.
commutation.
Answer
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Electrical Machines
The output indicate on the name plate of any motor is always the
Power drawn in KW.
Gross power.
Output power at the shaft.
Power drawn in KVA.
Power drawn in KW.
Gross power.
Output power at the shaft.
Power drawn in KVA.
Answer
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