Please Help Members By Posting Answers For Below Questions
Why we use auxillary relay ? what is function of
differential relay, directional o/c relay?
sir i want previous entrance exam papers for written test
How will A Medium voltage circuit breaker(11 kV voltage level) operate under short circuit fault condition
whether It is having short circuit release like Low voltage circuit breaker or relay should be given?
why power not passes in plastic and rubber material
A Generator is in running condition and Rotor earth fault
alarm is coming.How to check on line(i.e in running
condition) whether there is actual earth fault in rotor or
how to design coil turns ?
STATE WORKING OF VACCUM CIRCUIT BRAKER?
working of diesel generator ?
Is there any specialised book to refer about fault level
calculation both in MV and LV side??
what is the transiant condition in alternator? and how it
can be prevanted?
generally in LT and MV motors we are using
3.5Coresx16,25,35,50 etc cable for supply.although motors
is earthed at two point and having all protection.then why
we are using that 1/2 core for earthing the motors.while in
HT cable we are using only 3core cable for motor
supply.generally lt and mv motors are delta connected and
ht motors having star connection.whethere it is having any
relation with winding connection( star or delta).all motors
i am talking about are dol only.can anybody solve my
RESPECCTED SIR/MADAM- I AM PRERING FOR SECTION ENGINEER
(ELECTRICAL) RRB CHANDIGARH PLEASE SEND ME SOME PREVIOUS
YEAR QUESTION PAPER OR MODEL PAPER.MY EXAM IS ON (30-
NOVEMBER 2008).I AM VERY THANKFUL TO YOU.
FROM- HARENDRA SINGH YADAV
1.how many earth pits are required for 1000 k.w plant include substion , transformer ?
2. how many earth pits are required for 500kva
generator.what is formula to calcute?
what is polarity in ac system? and how do identified?