ISRO Scientist or Engineer Electrical 2014

Instructions

For the following questions answer them individually

ISRO Scientist or Engineer Electrical 2014 - Question 11


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

Video Solution

ISRO Scientist or Engineer Electrical 2014 - Question 12


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

Video Solution

ISRO Scientist or Engineer Electrical 2014 - Question 13


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

Video Solution

ISRO Scientist or Engineer Electrical 2014 - Question 14


Synchronous motors are not self starting because

Video Solution

ISRO Scientist or Engineer Electrical 2014 - 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

Video Solution

ISRO Scientist or Engineer Electrical 2014 - Question 16


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

Video Solution

ISRO Scientist or Engineer Electrical 2014 - Question 17


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

Video Solution

ISRO Scientist or Engineer Electrical 2014 - Question 18


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

Video Solution

ISRO Scientist or Engineer Electrical 2014 - Question 19


Thrust developed by a linear induction motor depends on

Video Solution

ISRO Scientist or Engineer Electrical 2014 - Question 20


The crawling in an induction motor is caused by

Video Solution
cracku

Boost your Prep!

Download App