what is the meaning of 5% droop or 7% droop in AVR?
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Recently we had experienced following problem All RCCB breakers (connected to the load as well as spares) connected to various UPS systems at various floors at a high rise building tripped during a power break down and upon starting up of generator.This Generator is recently inducted into the installation. Can any one explain the reason behind this tripping. Regards Viswanathan
. What should be the minimum and maximum ohmic value for earthing?
Show formula which gives full load current 4.8 amps of a 3 HP motor and 27 amps of a 20 HP motor having 3 phase 460 volts, 0.8 Pf.
Why the transformers are rating in KVA.?
The metal-enclosed switchgear and controlgear is subdivided into three types: 1. metal-clad switchgear and controlgear; 2. compartmented switchgear and controlgear 3. cubicle switchgear and controlgear. What is the main differnence between them. State some example.
wt wil happen if a 120kv line is grounded
Sir I hv to fix 20 ton ac how much electrical power need apply?
what is meant by CT burden = 10 VA?
in 132 kv substation ligtning arrestor(120 kv) connected to line. but line voltage comes to 132 kv, it operate or not???
why efficiency of generator is greater than motor?
Though transformer consist winding which usually cause reactive power change in both generator and motor but it wont affect reactive power passing through transformer why?
I have applied the post Junior Engineer-iii(c&w)in R.R.B chennaI recently . can i get any model question paper LAST 4 YEARS?
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