HOW many type of Circut Breaker in the world used in 400 kv
substation?
Answer Posted / romal
sf6 & some where air blast ckt. breaker
| Is This Answer Correct ? | 9 Yes | 2 No |
Post New Answer View All Answers
why three phase capacitor takes unbalanced current in capacitor bank?
write circuit diagram for a motor rotate in forward direction once it started and when pressed the same button it should rotate in anticlockwise.
what is the reason for indication of light in the earth lamps of main switchboard.if there is an earth why does one lamp get dim and the other two bright.
what does a string of resistors in a series will do?
What do you mean by phasors?
I am applying for NTPC examination.Can we please provide previous paper to my mail prasad.chintala108340@gmail.com
operation of diesel generator
For a stable system, where should the poles of a system be in a root loci plot?
can we use ZNyn11 transformer instead of Dyn11 transformer in distribution for effectively eliminating harmonics from the industrial loads.
1- XC and the RC time constant are both measures of the reaction of C to a change in ____? 2-The power factor is a numerical ratio with a value between 0 and 1 equal to the ______________ of the phase angle. 3-When V and I are out of phase because of reactance, the product of V times I is called ______________ power 4-For _____________ inductors, the branch currents can be added algebraically. 5- The ______________ power in watts can be calculated as I^2R 6-Calculate XL with L = 30mH and f = 1kHz ( I have Xl=2piFL 2*3.141592653*1kHz*30mH =188 ohms Please check) 7-A parallel RL circuit has the values, R = 5kohms, XL = 5kohms. A voltage source of Vt = 10Vrms is connected in parallel to R and L. Determine the total current, It delivered by the voltage source Vt. 8-A series RC circuit has R = 1Mohm and C = 1microF. How long would it take for the capacitor to fully discharge if it is initially fully charged? 9-A circuit has real power = 300W and an apparent power of 500VA. Determine the power factor and phase angle. 10-The time constant for an LR series circuit is T = 0.1s and R = 10ohms. Calculate the inductance L.
how to compute kAIC? with formulas...
Why power factor should not be in leading (capacitive) mode of any load.
Why do we mostly prefer to generate and distribute electricity in 3 phase and not in 4 phase or 5 phase?
Application Comparison between 22KV (UE)and 33KV (E) system. Are we allowed to use 33KV (E) cable in lieu of 22KV (UE) cable. What are the technical disadvantages.
List the advantages of star-delta starter with induction motor?