Equivalent resistance of the circuit, Req = (750|| 600 || 200)
Req = 125 Ω
Current from source = 1 A
Source voltage = 1*125
Source voltage = 125 V
For lagging power factor = (IR*cosφ + Ixsinφ)/Vr
For leading power factor = (IR*cosφ - Ixsinφ)/Vr
Zero voltage regulation occurs on leading power factor only.
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 reactance.
The reactance diagram can be obtained from impedance diagram if all the resistive components are neglected.
So, from figure each of the component is represented by its reactance.
In DC microgrid system,
Efficiency α 1/Pin
For 1 kW loss injecting power is 20 kW
For 1.5 kW loss injecting power will be proportional to 30 kW
Efficiency will be reduced 0.025