Electrical Machines
Swinburne's test is applicable to

 DC shunt and level Compound motor.
 DC compound motor.
 DC series motor.
 DC Shunt motor.

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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

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

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