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Electrical Machines
The slot edges in a DC machine are made of
Mild steel.
Fibre.
Silicon steel.
Cast iron.
Mild steel.
Fibre.
Silicon steel.
Cast iron.
Answer
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Related Question
Electrical Machines
A 4-pole generator with 16 coil has a two layer lap winding. The pole pitch is
16.
4.
32.
8.
16.
4.
32.
8.
Answer
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Electrical Machines
If the field winding connection of DC shunt motor is changed
motor will become slow.
It will run in opposite direction.
motor will not run.
It will run in same direction.
motor will become slow.
It will run in opposite direction.
motor will not run.
It will run in same direction.
Answer
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Electrical Machines
The result of slip test on a 3-phase, 20 KVA, 400 V, 50 Hz connected salient pole alternator is given below- Phase value: Vmax = 100 V, Vmin = 96 V, Imax = 10 A and I min = 7 A. The direct and quadranature axis reactances are respectively
14.28 and 9.60 Ω.
8.248 and 9.60 Ω.
8.248 and 5.54 Ω.
14.28 and 5.54 Ω.
14.28 and 9.60 Ω.
8.248 and 9.60 Ω.
8.248 and 5.54 Ω.
14.28 and 5.54 Ω.
Answer
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Electrical Machines
The rotor power output of 3-phase induction motor is 15 KW. The rotor copper losses at a slip of 4% will be
700 W
650 W
600 W
625 W
700 W
650 W
600 W
625 W
Answer
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Electrical Machines
Direct axis reactance is defined as the ratio of
Vmax to Imax
Vmax to Imin
Vmin to Imax
Vmin to Imin
Vmax to Imax
Vmax to Imin
Vmin to Imax
Vmin to Imin
Answer
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