ISRO Scientist or Engineer Electrical 2013

Instructions

For the following questions answer them individually

Question 51

Grounding is generally done in transmission line at

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Question 52

What is the approximate value of the surge impedance loading of a 400 kV, 3-phase 50Hz overhead single circuit transmission line

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Question 53

When two identical first order systems have been cascaded non - interactively the unit step response of the system will be

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Question 54

Which of the following methods is most strong tool to determine the Stability and the transient response of the system ?

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Question 55

If the gain of a critically damped system is increased, it will become

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Question 56

Phase margin of a system is used to specify

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Question 57

The rms value of an alternating current is given by steady DC current which when flowing through a given circuit fora given time produces,

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Question 58

AC current cannot be measured directly by

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Question 59

The internal resistance of a voltmeter should be very high in order to have

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Question 60

The resistance of a thermistor

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