Answer Posted / farzan danish
earthing resistanc should must be less than 1 ohm
Is This Answer Correct ? | 10 Yes | 1 No |
Post New Answer View All Answers
Q.1:What protection will be used on HT and LT side of 33/0.4 KV, MVA transformer. Indicate capacities of protective device to be used. Q.2:Which types of back-up protections are used in the power transformers? What do you understand by the term over travel in the relay? Q.3:How star and delta connected winding transformer are provided from earth fault
What is mean by hot and cold loop testing? What is the difference between them?
Define filter?
how we calculate electrical load on a building according to area?
Explain the purpose of inductor in an electric circuit?
why are the maintaine power factor and how can this control and this is how work.
if we apply 1000ADC instead of 100ADC or We apply 50ADC instead of 100ADC,What will be happened in the test result value.Pl explain
What happens to a line-frequency of high-frequency transformer when it is first energized/ re-energize?
In single phase ac ups supply when current is measured with tong tester neutral current is found more than phase current.What is the reason?
WHAT IS SUBSTATION & ACCORDING TO VOLTAGE HT,EHT SUBSTATION EXPLAIN IT
Factory acceptance test. FAT. For 132 kv transmisstion towers what is that meaning and what are the tests commonly companies perform now days.
i need to give section engineer (electrical engineer) for RRB. Please suggest some book
what is stper motor
how to check regenerative load in drived motor
What is K-rated transformer? What is the use of it? What can be the size(pls provide calculation if possible) of K- factor transformer for 550kW,690V motor operating with drive (VFD)?