Electric Circuits Phase voltages of a star connected alternator are ER = 240∠0o V, EY = 240∠-120o V and EB = 240∠ + 120o V. What is the phase sequence of the system? YBR. RBY. BYR. RYB. YBR. RBY. BYR. RYB. ANSWER DOWNLOAD EXAMIANS APP
Electric Circuits A 20 μF capacitor and 200 W, 220 V lamp is connected in series across a 220 V alternating supply. In which frequency of the supply the lamp will glow dimmest? 100 Hz. 1 Hz. 10 Hz. 1000 Hz. 100 Hz. 1 Hz. 10 Hz. 1000 Hz. ANSWER DOWNLOAD EXAMIANS APP
Electric Circuits The switch S is the circuit shown in figure is ideal. If the switch is repeatedly closed for 1 ms and opened for 1 ms, the average value of i(t) is 1 mA. 0.35 mA. 0.25 mA. 0.5 mA. 1 mA. 0.35 mA. 0.25 mA. 0.5 mA. ANSWER DOWNLOAD EXAMIANS APP
Electric Circuits The rms value of the resultant current in a wire which carries a DC current of 10A and a sinusoidal current of peak value 20A is 17.3A . 14.14A. 30A. 22.4A. 17.3A . 14.14A. 30A. 22.4A. ANSWER DOWNLOAD EXAMIANS APP
Electric Circuits A capacitor carries a charge of 0.1 C at 5 V. Its capacitance is 0.02 F 0.5 F 0.2 F 0.05 F 0.02 F 0.5 F 0.2 F 0.05 F ANSWER DOWNLOAD EXAMIANS APP
Electric Circuits A coil with negligible resistance has 50 V across it with 10 mA. The inductive reactance is 1000 ohms. 50 ohms. 5000 ohms. 500 ohms. 1000 ohms. 50 ohms. 5000 ohms. 500 ohms. ANSWER DOWNLOAD EXAMIANS APP
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