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M

Mr. Dubey • 51.17K Points
Coach

Q. 1) The selection of an electric motor for any application depends on which of the following factors ?

(A) Electrical characteristics
(B) Mechanical characteristics
(C) Size and rating of motors
(D) All of the above
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M

Mr. Dubey • 51.17K Points
Coach

Q. 2) 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) All of the above
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M

Mr. Dubey • 51.17K Points
Coach

Q. 3) Which ofthefollowingmotors is preferred for traction work ?

(A) Universal motor
(B) D.C. series motor
(C) Synchronous motor
(D) Three-phase induction motor
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M

Mr. Dubey • 51.17K Points
Coach

Q. 4) Which of the following motors always starts on load ?

(A) Conveyor motor
(B) Floor mill motor
(C) Fan motor
(D) All of the above
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M

Mr. Dubey • 51.17K Points
Coach

Q. 5) is preferred for automatic drives.

(A) Squirrel cage induction motor
(B) Synchronous motors
(C) Ward-Leonard controlled
(D) motors
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M

Mr. Dubey • 51.17K Points
Coach

Q. 6) When the load is above a synchronous motor is found to be more economical.

(A) 2 kW
(B) 20 kW
(C) 50 kW
(D) 100 kW
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M

Mr. Dubey • 51.17K Points
Coach

Q. 7) 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
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M

Mr. Dubey • 51.17K Points
Coach

Q. 8) Light duty cranes are used in which of the following ?

(A) Power houses
(B) Pumping stations
(C) Automobile workshops
(D) All of the above
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M

Mr. Dubey • 51.17K Points
Coach

Q. 9) While selecting an electric motor for a floor mill, which electrical characteristics will be of least significance ?

(A) Running characteristic
(B) Starting characteristics
(C) Efficiency
(D) Braking
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M

Mr. Dubey • 51.17K Points
Coach

Q. 10) Which of the following motors are pre-ferred for overhead travelling cranes ?

(A) Slow speed motor
(B) Continuous duty motors
(C) Short time rated motors
(D) None of the above
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