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GATE 2020: Network Theory Quiz 3 (App update required to attempt this test)
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Question 1
A resistance and a coil are connected in series and supplied from a single phase, 100V, 50Hz ac source as shown in the figure below. The rms values of possible voltage across the resistance (VR) and coil (Vc)respectively, in volts, are
Question 2
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
Question 3
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).
Question 4
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)
V1 = 100(1+j)
V2 = 100(1-j)
Question 5
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:
Question 6
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)
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Jul 31ESE & GATE EE