Relay protection is generally not provided for -

Correct! Wrong!

A two-winding transformer operates at maximum efficiency when its -

Correct! Wrong!

For measuring high values of A.C. with a dynamometer ammeter, we use a __ Shunt .

Correct! Wrong!

The S.I. unit of µ˳ is -

Correct! Wrong!

The current drawn by a 220 V DC motor of armature resistance 0.5 ohm and back emf 200 V is -

Correct! Wrong!

The commutating pole winding is connected in -

Correct! Wrong!

The greatest percentage of power loss in DC motor is due to -

Correct! Wrong!

In DC shunt generator, the constant loss -

Correct! Wrong!

Hystersis loss in DC machine is directly propotional to -

Correct! Wrong!

Which of the following generator provided approximately constant voltage from no load to full load -

Correct! Wrong!

The operation of a thermocouple is based on

Correct! Wrong!

The material, from the below having negative temperature coefficient of resistance is

Correct! Wrong!

______ is used as a coolant in electrical machines to increase their efficiency.

Correct! Wrong!

One commercial unit of energy equal to

Correct! Wrong!

The nominal voltage for lead-acid cells is

Correct! Wrong!

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