ISRO Scientist or Engineer Electrical 2014

Instructions

For the following questions answer them individually

Question 11

In alternator, during hunting when the speed becomes super synchronous, the damper bars develop

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Question 12

It is never advisable to connect a stationary alternator to live bus-bar because it

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Question 13

Under no load condition, the angle between the induced voltage and the supply voltage in synchronous motor is

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Question 14

Synchronous motors are not self starting because

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Question 15

A three phase induction motor running at 1440 rpm on rated supply will run at the following rpm when fuse of one phase gets burnt

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Question 16

Dispersion coefficient $$\sigma$$ is the ratio of

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Question 17

In the circle diagram for a 3-phase induction motor, the diameter of the circle is determined by

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Question 18

While conducting short-circuit test on a transformer the following side is short circuited

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Question 19

Thrust developed by a linear induction motor depends on

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Question 20

The crawling in an induction motor is caused by

Video Solution
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