B:-No slip
C:-Very small
D:-None of the above
Correct Answer:- Option-C
Question49:-The relative advantage of a cage motor over a wound rotor motor of same power is
A:-Cage motor is More efficient
B:-Cage motor is less cost
C:-Better operating power factor
D:-All the above
Correct Answer:- Option-D
Question50:-The maximum torque of an induction motor is proportional to
A:-Square of supply voltage
B:-Supply voltage
C:-Reciprocal of the square of supply voltage
D:-None of the above
Correct Answer:- Option-A
Question51:-A synchronous motor runs on
A:-AC only
B:-DC only
C:-Both acand dc
D:-None of the above
Correct Answer:- Option-A
Question52:-If the armature coil of a DC machine is N tums then Number of conductors of any coil side
A:-2N
B:-N/2
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‎D:-N
‎Correct Answer:- Option-D
Question53:-The distance between two consecutive and similar top coil side is called
A:-Back pitch
B:-Front pitch
C:-Winding pitch
D:-Commutator pitch
Correct Answer:- Option-C
Question54:-In lap wound machine the number of brushes used is equal to
A:-number of poles
B:-2
C:-number of tums
D:-number of commutator segments
Correct Answer:- Option-A
Question55:-A mooving [णो instrument can measure
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B:-AC & DC
C:-DC
D:-Pulse
Correct Answer:- Option-B
Question56:-The emf developed in any physical system act in such a direction to tend ‏ما‎
‎A:-Decrease co energy at constant mmf
B:-Decrease the o energy at constant flux
C:-Increase the co energy at constant mmf
D:-Increase the co energy at constant flux
Correct Answer:- Option-C
Question57:-The factor to be considered while selecting the site of a hydel power plant
A:-Quantity of water available
B:-Head of water
C:-Accessibility of the site
D:-All the above
Correct Answer:- Option-D
Question58:-Specific speed of a turbine is the speed at which it develop 1 metric HP under the head of