The single line diagram of the simple power system is shown in figure the corresponding reactance diagram is

Simple logic of reactance diagram is that simplified equivalent circuit of power system in which the various components of power system are represented by their reactances.
The reactance diagram can be obtained from impedance diagram if all the resistive components are neglected.

સોહેલ ખાન : મલાયકા અરોર :: સૈફ અલી ખાન : ??

In circuit breaker, the term MCCB stands for

MCCB stands for Moulded Case Circuit Breaker.
MCB stands for Miniature Circuit Breaker.
ELCB stands for Earth Leakage Circuit Breaker
RCCB stands for Residual Current Circuit Breaker.

____are long-term (hours-long) voltage sags caused by system overload.

A term brown out means it is an intentional or unintentional drop in voltage in an electrical power supply system.
Brown outs are long-term (hours-long) voltage sags caused by system overload.
Deviations from the regular sinusoidal wave, both on the utility side and on the customer side, result in poor power quality.

In the circuit of figure, the switch is closed to position-1 for a long time. At t = 0 the switch position is changed from postion-1 to postion-2. Find an expression for the current i(t).

Standard eqution of current for this condition,
i(t) = i(0+)*cos(wt)
i(0+) = E/R
For LC circuit,
w = 1/√(LC)

i(t) = (E/R)*cos((1/√(LC))*t) A

In the context of smart meters, the term 'SMETS' stand for