Answer / ummed singh

yes, because scr can only be turn on by applying gate pulses
but it cannot be turnoff by the same.

Ref. P.S. Bhimbra power electronics

Answer / keshav khannawalia

yes, only triggering can be done through gate but commutation cant be done through gate,gate loses control after the scr turns on ...

Answer / guest

yes

Answer / sidharth

NO, the firing angle of the SCR can be controlled from 0 to 360 degrees. only the operation of the SCR changes. It acts as a phase controlled rectifier from 0 to 180 degrees and as an inverter from 180 to 360 degrees.

why we use circuit breakers for switching instead of normal switching device?

0 Answers  

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why transmission is done in delta system

4 Answers  

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If 11 KV breaker on the primary side of a 11 KV/3.3 KV 12.5 MVA transformer can be installed at a distance of 1000 mtrs through a 11 KV cable. If no what are the probable reasons.

1 Answers  

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what is the difference between current voltage transformer and current transformer and where it is used?

2 Answers  

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Why the design of electromechanical energy conversion machines is based on the medium of conversion as megnetic field not as electric field?

2 Answers  

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tell me working of air circuit braker.

2 Answers  

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is there any concept of armature reaction in Induction motor?

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What is flow meter?

2 Answers  

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How much Fault current can be contributed by a motor?

4 Answers  

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why are transformer rating in MVA

2 Answers   Suzlon,

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In domestic supply, when neutral touches earth the earth leakage trips. Does this mean that if the star (neutral) point of an alternator is earthed that power will flow to earth i.e. a direct short to earth?

1 Answers  

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what is meant by reactive power ?

5 Answers  

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