Electrical Machines
Torque developed in the rotor is

 not dependent on the slip
 either of these
 inversely proportional to slip
 directly proportional to slip

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Electrical Machines
A dc shunt generator, when commissioned after a major repair of the field system, failed to build Up voltage. It was because

 field winding was wrongly connected
 field resistance was higher than critical resistance
 there was a break in the armature circuit
 field system lost residual magnetism

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