Related Questions

In a capacitor start and run motors the function of the running capacitor in series with the auxiliary winding is to
A improve power factor
B increase overload capacity
C reduce fluctuations in torque
D to improve torque
In a capacitor start single-phase motor, when capacitor is replaced by a resistance
A torque will increase
B the motor will consume less power
C motor will run in reverse direction
D motor will continue to run in same direction
In a two value capacitor motor, the capacitor used for running purposes is
A air capacitor
B paper spaced oil filled type
C ceramic type
D a.c. electrolytic type
While starting a synchronous motor by induction motor action, field winding is usually
A connected to D.C. supply
B short-circuited by low resistance
C kept open-circuited
D none of the above
While testing a capacitor with ohm meter, if the capacitor shows charging, but the final resistance reading is appreciably less than normal, it can be concluded that the capacitor is
A Short-circuited
B Open circuited
C Alright
D Leaky
In a split phase motor, the running winding should have
A high resistance and low inductance
B low resistance and high inductance
C high resistance as well as high inductance
D low resistance as well as low inductiance
The running winding of a single phase motor on testing with Meggar is found to be ground. Most probable location of the ground will be
A At the end connections
B At the end terminals
C Anywhere on the winding inside a slot
D At the slot edge where coil enters or comes out of the slot
The starting winding of a single-phase motor is placed in
A Armature
B Field
C Rotor
D Stator
After the starting winding of a single phase induction motor is disconnected from supply, it continues to run only on
A running winding
B rotor winding
C field winding
D compensating winding
Starting winding of a single phase motor of a refrigerator is disconnected from the circuit by means of a
A Magnetic relay
B Thermal relay
C Centrifugal switch
D None of the above

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