GATE 2020: Network Theory Quiz 3 (App update required to attempt this test)

A 250 V rms voltage source supplies three loads as shown in figure below, where

L₁: 20 kW at upf

L₂: 25 kVA at 0.8 pf lag

L₃: 40 kVA at 0.75 pf lag

Find the total power(kW) supplied by the source and the source p.f

The voltage across the terminals and shown in the figure, is a sinusoidal voltage having a frequencyWhen the inductor current is in phase with the voltage the magnitude of the impedance seen between the terminals a and b is __________ (upto 2 decimal places).

The phase angle of current ‘I’ with respect to the voltage ‘’ in the circuit given below is:
V₁ = 100(1+j)
V₂ = 100(1-j)

A 3-phase source is connected to two parallel balanced ∆ (delta) loads, one of resistor and other of resistor. The rms value of total line current when the line voltage is (rms) is given by:

An abc-phase sequence 3-phase balanced Y-connected source supplies power to a balanced ∆-connected load. The impedance per phase in the loads are coils of resistance 10 and inductive impedance of . If the line current in a phase is and the line impedance is negligible. Then find the rms value of load voltage .(in Volts)