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Question: Special Motor

The control …………………… synchro has three- phase winding both on its stator and rotor.

February 12, 2021 by Prabhat

(a) differential
(b) transformer
(c) receiver
(d) transmitter

Squirrel-cage induction motor is finding increasing application in high-power servo systems because new methods have been found to

February 12, 2021 by Prabhat

(a) increase its rotor resistance
(b) control its torque
(c) decrease its intertia
(d) decouple its torque and flux.

For torque transmission over a long distance with the help of electrical wires only, which of the following two synchros are used ?

February 12, 2021 by Prabhat

(a)CX and CT
(b)CX and CR
(c)CX and CD
(d)CT and CD

In a three-stack 12/8-pole VR motor, the rotor pole pitch is

February 12, 2021 by Prabhat

(a) 15º
(b) 30º
(c) 45º
(d) 60º

A variable reluctance stepper motor is constructed of ……………… material with salient poles.

February 12, 2021 by Prabhat

(a) paramagnetic
(b) ferromagnetic
(c) diamagnetic
(d) non-magnetic

A single-stack, 4-phase, 6-pole VR stepper motor will have a step angle of

February 11, 2021 by Prabhat
(a) 15º
(b) 30º
(c) 45º
(d) 90º
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