Related Questions

In repulsion motor direction of rotation of motor
A Is opposite to that of brush shift
B Is the same as that of brush shift
C Is independent of brush shift
D None
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
In case of conductively compensated D.C. series motors, the compensating winding is provided
A As separately wound unit
B In parallel with armature winding
C In series with armature winding
D In parallel with field winding
A repulsion motor is equipped with
A slip rings
B commutator
C both (A) and (B)
D none of the above
In repulsion motor, maximum torque is developed when
A brush axis is at 45° electrical to the field axis
B brush axis coincides with the field axis
C brush axis is at 90° electrical to the field axis
D none of the above
In repulsion motor, zero torque is developed when
A brush axis is 45° electrical to field axis
B brush axis coincides with the field axis
C brush axis is 90° electrical to field axis
D both (B) and (C)
Speed torque characteristic of a repulsion induction motor is similar to that of a D.C.
A shunt motor
B series motor
C compound motor
D separately excited motor
Which of the following statements regarding repulsion-start induction motor is incorrect ?
A It requires more maintenance of commutator and other mechanical devices
B It makes quite a bit of noise on starting
C In fractional horse power motors, it has replaced the capacitor motors
D It is not easily reversed
The repulsion start induction run motor is used because of
A good power factor
B high efficiency
C minimum cost
D high starting torque
A _______ is used to measure the stator % winding temperature of the generator.
A thermocouple
B pyrometer
C resistance thermometer
D thermometer

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