Why Transistors are not used as switching devices?

Answer Posted / gnanbalaji

The above said answers are wrong.Recently power transistors
were developed.They can be used.Due to secondary breakdown,
conduction losses,they are not used frequently.Due to small
reverse leakage current they will turn ON automatically.

Is This Answer Correct ?    4 Yes 6 No



Post New Answer       View All Answers


Please Help Members By Posting Answers For Below Questions

What is the physical significant of power factor?

1658


What is expention fastener (Fan)

1757


In case of generator when we consume more power produces by it why load on generator increase and starts sound more. and how it is adjusted..

1654


what is the difference between 50 hz freq. and 60 hz freq.? which is better and economic in them ?

2038


can i use 4 number of circuit breaker as single phase manual change over switch? if yes then how plz also send ckt diagram at nazimzamurad@gmail.com

1805






A 11KV, 1200 A breaker combination fixed in a cubicle for HT motor.Is normally for 11 KV motor fuse is using? if Yes, What range fuse is required?

1725


What is pole of the system?

863


Is it advantages of having star-delta vfd than normal star vfd , if yes why?

1986


Why field rheostat is kept in minimum position while armature rheostat at maximum position?

849


What do you mean by an instrument transformer?

815


what kind of quetions will ask in BHEL in interview? Plz help me?

1788


my b-tech percentage is 50%. what answer will satisfy the hr ?

1807


What is the alternate solution for testing of polarity by using polarity tester while its milli ammeter does not works?

1720


Explain the operation of variable frequency transformer?

858


CAN CU XLPE/PVC CABLE BE USED INPLACE OF LOW NOISE SCREENED CABLE? KINDLY GIVE REASONS

1609