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Three Phase Induction Motors

Three Phase Induction Motors
The torque developed by a 3 phase induction motor least depends on

Rotor current
Rotor emf
Rotor power factor
Shaft diameter

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Three Phase Induction Motors
In an induction motor, the ratio of rotor cu loss and rotor input is given by

S
S/1-S
1-S
1/S

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Three Phase Induction Motors
5 H.P., 50Hz, 3-phase, 440 V, induction motors are available for the following r.p.m. Which motor will be the costliest?

2880 rpm
730 rpm
1000 rpm
1440 rpm

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Three Phase Induction Motors
In the circle diagram for induction motor, the diameter of the circle represents

Slip
Rotor current
Line voltage
Running torque

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Three Phase Induction Motors
3-phase wound rotor morors are also called _____ motors.

Slip ring
Series
Commutator
Synchronous

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Three Phase Induction Motors
The shaft of induction motor is made of

Any of the listed here
Hollow
Flexible
Stiff

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MORE MCQ ON Three Phase Induction Motors

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