A. plugging
B. mechanical braking
C. regenerative braking
D. rheostatic braking
Industrial Drives
The load cycle for a motor driving a power press will be________________?
A. variable load
B. continuous
C. continuous but periodical
D. intermittent and variable load
In a paper mill where constant speed is required________________?
A. synchronous motors are preferred
B. A.C. motors are preferred
C. individual drive is preferred
D. group drive is preferred
Heat control switches are used in__________________?
A. transformers
B. cooling ranges
C. three phase induction motors
D. single phase
Which of the following motors has series characteristics ?
A. Shaded pole motor
B. Repulsion motor
C. Capacitor start motor
D. None of the above
In which of the following applications variable speed operation is preferred ?
A. Exhaust fan
B. Ceiling fan
C. Refrigerator
D. Water pump
Heavy duty cranes are used in________________?
A. ore handling plants
B. steel plants
C. heavy engineering workshops
D. all of the above
For a motor-generator set which of the following motors will be preferred ?
A. Synchronous motor
B. Slip ring induction motor
C. Pole changing induction motor
D. Squirrel cage induction motor
___________________is preferred for synthetic fibre mills?
A. Synchronous motor
B. Reluctance motor
C. Series motor
D. Shunt motor
Which of the following motors is preferred for traction work ?
A. Universal motor
B. D.C. series motor
C. Synchronous motor
D. Three-phase induction motor
