A relay coil is connected to a 210 V, 50 Hz supply. If it has resistance of 30Ω and an inductance of 0.5 H, the apparent power is
In the circuit shown in fig. P1.7.35 power factor is
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The power factor seen by the voltage source is
The average power supplied by the dependent source is
In the circuit of fig. P1.7.38 the maximum power absorbed by ZL is
The value of the load impedance, that would absorbs the maximum average power is
In a balanced Y–connected three phase generator Vab = 400 Vrms
Q. If phase sequence is abc then phase voltage Va, Vb,and Vc are respectively
In a balanced Y–connected three phase generator Vab = 400 Vrms
Q. If phase sequence is acb then phase voltage are
A balanced three-phase Y-connected load has one phase voltage Vc = 277∠450V. The phase sequence is abc. The line to line voltage VAB is
A three-phase circuit has two parallel balanced Δ loads, one of the 6Ω resistor and one of 12 Ω resistors. The magnitude of the total line current, when the line-to-line voltage is 480 Vrms ,is