A. Squirrel cage induction motor
B. Synchronous motors
C. Ward-Leonard controlled D.C. motors
D. Any of the above
Related Mcqs:
- Which of the following motors is usually preferred for kiln drives ?
A. Cascade controlled A.C. motor
B. Slip ring induction motor
C. Three phase shunt wound com-mutator motor
D. Any of the above - Ward-Leonard controlled D.C. drives are generally used for _____________________ excavators?
A. Light duty
B. Medium duty
C. Heavy duty
D. All of the above - For derries and winches which of the following drives can be used ?
A. Pole changing squirrel cage motors
B. D.C. motors with Ward-leonard con-trol
C. A.C. slip ring motors with variable resistance
D. Any of the above - Automatic signalling is used for which of the following trains ?
A. Mail and express trains
B. Superfast trains
C. Suburban and Urban electric trains
D. All trains - Which of the following drives is suitable for mines where explosive gas exists ?
A. Steam engine
B. Diesel engine
C. Battery locomotive
D. Any of the above - For which of the following applications D.C. motors are still preferred ?
A. High efficiency operation
B. Reversibility
C. Variable speed drive
D. High starting torque - For blowers which of the following motor is preferred ?
A. D.C. series motor
B. D.C. shunt motor
C. Squirrel cage induction motor
D. Wound rotor induction motor - In which of the following applications variable speed operation is preferred ?
A. Exhaust fan
B. Ceiling fan
C. Refrigerator
D. Water pump - A wound rotor induction motor is preferred, as compared to squirrel cage induction motor, when major consideration is____________________?
A. slop speed operation
B. high starting torque
C. low windage losses
D. all of the above - Which of the following motors is preferred for boom hoist of a travelling crane ?
A. Single phase motor
B. Synchronous motor
C. A.C. slip ring motor
D. Ward-Leonard controlled D.C. shunt motor
