Answer / sanjna

IGBT,FET,MOSFET ARE CURRENT CONTROL DEVICES
BJT,DIODE,UJT ARE VOLTAGE CONTROL DEVICES

Can the efficiency of transformer be measured with the help of wattmeter readings taken at primary and secondary side? Support the answer.

2 Answers  

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What is the rating of HT SUBSTATION and LT SUBSTATION?

11 Answers   NTPC, Sail,

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What is meant by Im=30mA@Vk/2. How to know the kee point voltage for CT design

0 Answers  

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Explain the operation principle, advantages and disadvantages of the following converters: a) A 12 pulse converter b) A Switch-mode inverter c) A thyristor inverter

0 Answers  

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Safety devices in SF6 Circuit Breaker?

1 Answers   DELL,

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how to calculate the formula of cable size if motor kw is given

0 Answers   APT,

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What is the secondry voltage of 420kV Current Transformer , the rated current is 2600A

6 Answers  

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What are the uses of lead compensator?

0 Answers  

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what is the difference in inductance and resistance.both oppose the flow of current but how.resistance having + ve power in both cycle while inductance having both power.

5 Answers  

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In three phase supply why we use R Y B Colour not other.

4 Answers  

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What is the slip speed?

0 Answers  

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HOW many type of Circut Breaker in the world used in 400 kv substation?

14 Answers   Power Grid,

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