Electric Circuits A 60 Hz frequency voltage would cause a bulb to turn on and off 60 times per second. 70 times per second. 120 times per second. 80 times per second. 60 times per second. 70 times per second. 120 times per second. 80 times per second. ANSWER DOWNLOAD EXAMIANS APP
Electric Circuits A current of 4 A flows in an ac circuit when 100 V dc is applied to it whereas it takes 250 v ac to produce the same current the power factor of the circuit is 0.85. 1. 10. 0.4. 0.85. 1. 10. 0.4. ANSWER DOWNLOAD EXAMIANS APP
Electric Circuits In the figure, the potential difference between points P and Q is - 6 V. 12 V. 10 V. 6 V. - 6 V. 12 V. 10 V. 6 V. ANSWER DOWNLOAD EXAMIANS APP
Electric Circuits A 35 V source is connected to a series circuit of 600 Ω and R as shown. If a voltmeter of internal resistance 1.2 kΩ is connected across 600 Ω resistor, it reads 5 V. The value of R is 3.6 k Ω. 7.2 k Ω. 1.2 k Ω. 2.4 k Ω. 3.6 k Ω. 7.2 k Ω. 1.2 k Ω. 2.4 k Ω. ANSWER DOWNLOAD EXAMIANS APP
Electric Circuits The inductive reactance of an electric circuit is 200 Ohms. The frequency of supply becomes doubled. What is the new capacitive reactance? 100 Ohms. 200 Ohms. 50 Ohms. 400 Ohms. 100 Ohms. 200 Ohms. 50 Ohms. 400 Ohms. ANSWER DOWNLOAD EXAMIANS APP
Electric Circuits A 100 ohm resistor is directly connected across a 80 V battery. What is the power dissipation? 1 W. 10 W. 5 W. 64 W. 1 W. 10 W. 5 W. 64 W. ANSWER DOWNLOAD EXAMIANS APP