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

(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

(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 ?

(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

(a) 15º (b) 30º (c) 45º (d) 60º

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

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