Industrial Drives Mcqs
Q.1: Which of the following motors are pre-ferred for overhead travelling cranes ?M
A. Slow speed motors
B. Continuous duty motors
C. Short time rated motors
D. None of the above
Q.2: Light duty cranes are used in which of the following ?6
A. Power houses
B. Pumping stations
C. Automobile workshops
D. All of the above
Q.3: When the load is above _______________ a synchronous motor is found to be more economical?Z
A. 2 kW
B. 20 kW
C. 50 kW
D. 100 kW
Q.4: ________________is preferred for automatic drives?2
A. Squirrel cage induction motor
B. Synchronous motors
C. Ward-Leonard controlled motors
D. Any of the above
Q.5: Which of the following motors is preferred for traction work ?>
A. Universal motor
B. series motor
C. Synchronous motor
D. Three-phase induction motor
Q.6: The selection of an electric motor for any application depends on which of the following factors ?b
A. Electrical characteristics
B. Mechanical characteristics
C. Size and rating of motors
D. Cost
Q.7: While selecting an electric motor for a floor mill, which electrical characteristics will be of least significance ?t
A. Running characteristics
B. Starting characteristics
C. Efficiency
D. Braking
Q.8: Which of the following motors always starts on load ?5
A. Conveyor motor
B. Floor mill motor
C. Fan motor
D. All of the above
Q.9: The load cycle for a motor driving a power press will be________________?I
A. variable load
B. continuous
C. continuous but periodical
D. intermittent and variable load
Q.10: For a particular application the type of electric-and control gear are determined by which of the following considerations ?|
A. Starting torque
B. Conditions of environment
C. Limitation on starting current
D. Speed control range and its nature"

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