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
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
If the centrifugal switch of a two-value capacitor motor using two capacitors fails to open then
A motor will not come up to speed
B motor will not carry the load
C current drawn by the motor will be excessively high
D electrolytic capacitor will, in all probability, suffer break down
Which one of the following is not necessarily the advantage of D.C. motors over A.C. motors?
A Low cost
B Wide speed range
C Stability
D High starting torque
A mica capacitor and a ceramic capacitor both have the same physical dimensions. Which will have more value of capacitance ?
A Ceramic capacitor
B Mica capacitor
C Both will have identical value of capacitance
D It depends on applied voltage
In capacitor start single-phase motors
A current in the starting winding leads the voltage
B current in the starting winding lags the voltage
C current in the starting winding is in phase with voltage in running winding
D none of the above
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
When a capacitor was connected to the terminal of ohmmeter, the pointer indicated a low resistance initially and then slowly came to infinity position. This shows that capacitor is
A Short-circuited
B All right
C Faulty
D None of the above
A capacitor in a circuit became hot and ultimately exploded due to wrong connections, which type of capacitor it could be ?
A Paper capacitor
B Ceramic capacitor
C Electrolytic capacitor
D Any-of the above
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

Next steps