what is meant by trip circuit supervision & directional or
non directional over current ?
Trip circuit supervision is for supervision of trip circuit
for loss of DC supply,faults on trip coil or cables,faults
in auxiliary contacts and in itself, with breaker in any
position.Directional OCR acts for over current in one
direction only where non-directional acts for both the
directions
| Is This Answer Correct ? | 9 Yes | 1 No |
EXPLAIN WHY THE SURGE CURRENT RATING OF AN MCCB OR CIRCUIT BREAKER DECREASES WITH INCREASE IN THE RATING OF MCCB OR CIRCUIT BREAKER.
what is meant by 3rd hormonics ?
how to maintain standard votage in power system?
What is a charge.?
MCB is used for high rating &MCB is used for lower rating.What is technical difference between ACB & MCB?
where is the need for short circuit test for 3 see is required and why? can you explain in brief with application
1.Whats the use of GNAC(Generator Neutral Accessory Compartment) 2. why generator or any other system require Neutral Grounding and not Phase grounding 3. what happens if any one of the phase is grounded. 4. if 15kv is grounded directly what will happen, why it should not be grounded like that 5. use of of NGTR(Neutral Grounding Transformer and Resistor) for grounding is helpfull and how
5 Answers BEMCO, CSS, Powergear,
how to checking earth restence with earthtester
why we are using KVA rating for transformer,not KWh rating?
If mutual flux is 1.2wb & power factor is 0.8 lag , then what is the Useful flux of a transformer?
why a vaccum is created in condenser
1) How to calculate battery backup for ups as well as solar with complete formula elaborately......
Civil Engineering (5086)
Mechanical Engineering (4456)
Electrical Engineering (16639)
Electronics Communications (3918)
Chemical Engineering (1095)
Aeronautical Engineering (239)
Bio Engineering (96)
Metallurgy (361)
Industrial Engineering (259)
Instrumentation (3014)
Automobile Engineering (332)
Mechatronics Engineering (97)
Marine Engineering (124)
Power Plant Engineering (172)
Textile Engineering (575)
Production Engineering (25)
Satellite Systems Engineering (106)
Engineering AllOther (1379)