SSC JE Electrical Engineering 25th Jan 2018 Shift-2

Instructions

For the following questions answer them individually

Question 151

The loss associated with the mechanical friction of a machine are called ..........

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Question 152

For a 3-phase load balanced condition, each phase has the same value of ........

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Question 153

A short circuit test on a transformer gives .............

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Question 154

Armature reaction effect causes flux to reduce with ..........

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Question 155

The armature of a DC machine is made of. ...........

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Question 156

DC generators are designed to develop armature voltages not exceeding 650 V because ofthe limitations of. ..........

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Question 157

A step up transformer increases .....

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Question 158

It is economical to transmit electricity at a .........

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Question 159

Rotating magnetic fields are also used in 3phase induction motors rotor developing .........

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Question 160

One of the speed control methods of a 3 phase induction motors is .........

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