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Question
how we select the mva rating of the circuit breakers?
 Question Submitted By :: Ravi
I also faced this Question!!     Rank Answer Posted By  
 
  Re: how we select the mva rating of the circuit breakers?
Answer
# 1
accordig to the voltage of the system & peak value of fault
current to be interrupted by the breaker
 
Is This Answer Correct ?    5 Yes 0 No
Akhilesh Negi
 

 
 
 
Other Electrical Engineering Interview Questions
 
  Question Asked @ Answers
 
1. When do you use a VFD motor? 2. If the ceiling fan is on slow speed, does it consume less electricity? 3. If we want the fan to consume less electricity at low speed, what do we have to do? 4. What does “battery of 180 AMP HOUR” mean to you? 5. What does “battery of 180 AMP HOUR” mean to you? 6. If you don’t have coal, salt and copper, then how would you earth your connection temporarily at a camp site.? Focus 6
Where to use pt and where to use CVT   1
why the measure taken in multiplication factor of 11for voltage like.. 110V,220V,440V,1.1KV,6.6KV,11KV,33KV,66KV,110KV,132KV,220KV Vijai-Electricals 1
what is the size of trasmission conducatar TCS 2
what happen if any one phase of a slipring induction rotor winding is open?is it start or won't? Aurobindo 2
we use Dyn11 trafo for distribution purpose, if it`s possible for replacing Dyn1. if it`s change means what will happen?   1
Amoung all types of short circuit faults in a transmission line which one has less number of occurance and why?   1
For what purpose and why ACBs are used   4
What is the difference between the watt hour meter and Var hour meter in terms of internal connection and work theory . ie "When the meter records watt-hour an when the meter records var hours ??"   12
why field rhoestat is kept in minimum position while armature rheostat at maximun position?   3
why to use freewheeling diode ( diode in revers bias mode) across dc coil   2
WHY ARE THE LT GENERATORS SOLIDLY EARTHED WHILE THE HT GENERATORS ARE EARTHE THROUGH NGR OR NGT??   3
 
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