Related Questions

Temperature of the stator winding of a three phase induction motor is obtained by
A Resistance rise method
B Thermometer method
C Embedded temperature method
D All above methods
The purpose of stator winding in the compensated repulsion motor is to
A provide mechanical balance
B improve power factor and provide better speed regulation
C prevent hunting in the motor
D eliminate armature reaction
The stator is the rotating assembly in a generator or motor.
A True
B False
Some wire- wound resistors have bifilar winding. This type of winding is used to
A Increase the thermal stability
B Reduce the tolerance
C Reduce the inductance of winding
D Double the power rating of the resistor
________ cooling is the process of dissipating the armature and field winding losses to a cooling medium circulating within the winding insulation wall
A Direct
B Indirect
C Conventional
D Any of the above
In a D.C. generator in case the resistance of the field winding is increased, then output voltage will
A Increase
B Decrease
C Remain unaffected
D Fluctuate heavily
For a D.C. generator when the number of poles and the number of armature conductors is fixed, then which winding will give the higher e.m.f.?
A Lap winding
B Wave winding
C Either of (A) and (B) above
D Depends on other features of design
The number of armature parallel paths in a two-pole D.C. generator having duplex lap winding is
A 2
B 4
C 6
D 8
A 4 pole generator with 16 coil has a 2-layer lap winding. The pole pitch is -
A 8
B 4
C 16
D 32
The e.m.f. generated by a shunt wound D.C. generator is E. Now while pole flux remains constant, if the speed of the generator is doubled, the e.m.f. generated will be
A $$\frac{{\text{E}}}{2}$$
B 2E
C Slightly less than E
D E

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