Related Questions

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
Which of the following motors is usually used in household refrigerators?
A D.C. shunt motor
B D.C. series motor
C Single phase induction motor (split phase start or induction run motor)
D Reluctance motor
Which of the following motors will be used in electric clocks ?
A D.C. shunt motor
B D.C. series motor
C A.induction motor
D A.C. synchronous motor
Which of the following motors is used in tape-recorders ?
A Hysteresis motor
B Reluctance motor
C Capacitor-run motor
D Universal motor
Which of the following motors is used in a situation where load increases with speed ?
A Induction motor
B Three-phase series motor
C Schrage motor
D Hysteresis motor
Which of the following single-phase induction motors is generally used in time phonographs?
A Resistance start
B Capacitor start capacitor run
C Shaded pole
D Universal
Which of the following motors is used for elevators?
A Induction motor
B Synchronous motor
C Capacitor start single phase motor
D Any of the above
A pony motor is used for the starting which of the following motors?
A Squirrel cage induction motor
B Schrage motor
C Synchronous motor
D None of the above
For crane travel which of the following motors is normally used?
A Synchronous motor
B D.C. differentially compound motor
C Ward-Leonard controlled D.shunt motor
D AC. slip ring motor
In squirrel cage induction motors which of the following methods of starting cannot be used?
A Resistance in rotor circuit
B Resistance in stator circuit
C Autotransformer starting
D Star-delta starting

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