A circuit breaker on detecting fault will
a. Open
b. Close
c. Open and trigger the alarm
Answer Posted / k.prakashchandra
While opening ,its auxiliary switches 1.open the trip circuit 2. make the closing circuit active 3. make the ' auto trip indicating lamp' on.
Is This Answer Correct ? | 3 Yes | 0 No |
Post New Answer View All Answers
difference between power surge and switching transient
Why are cables rated for 40 KA for 0.25 Sec fault current rating?
from where the self excitrd induction generator get the power?why is the voltage regulation is poor of seig?
Define norton equivalent circuit?
In our plant we have installed new MCC with ELR and CBCT which is detecting some leakage current in the system but it leading to some confusion when to check that in which feeder which is drawing current we put off the whole panel itself but still CBCT detecting some leakage current so can anybody ans me , where i am going wrong or how to detect whether its actual leakage or CBCT malfunctioning.
I'm generating a pulse of 3V with frequency 80Hz (12.5ms time period) and pulse duration 0.125ms and feeding it to a transformer since i want the pulse to get amplified around 60V. At the output amplification s happening but the pulse is changed to a spike, can you tell me what could be the reason? (an ordinary transformer 220V-12V stepdown transformer is reverse connected ie. now it is 12V-220V stepup and voltage amplification happens)
how harmonics generated in induction furnance? how minimise it?
what's the difference between 'shaft power demand' and 'BHP' , when we consider electrical load list.
What are the types of transformers according to the arrangement of iron cores?
it is possible to measurement of tension of slipring induction motor(SRIM)carbon brushes, any maesuring instruments are available in the markets.
I am inpecting a 10kVA UPS what tests should i do and should i observe?
how to conduct dc resistance test for rotor of an alternator and how to measure the rotor dc resistance value theoritically?
block diagram of 2 ups system connected in parallel mode?
how we can calcultae the short circuit level for bus bar
how to determine motor size for a fan application?