A dependent source can be a current source. both a voltage or a current source. a voltage source. neither a voltage nor a current source. TRUE ANSWER : ? YOUR ANSWER : ?
A variable capacitance is one whose capacitance changes with voltage. changes with time. changes with temperature. can be changed manually or by mechanical force. TRUE ANSWER : ? YOUR ANSWER : ?
Resistance of which material does not change with change in temperature? Brass. Tungsten. Metal alloys constantan and manganin. Platinum. TRUE ANSWER : ? YOUR ANSWER : ?
In a capacitor the electric charge is stored in metal plates. none of above. dielectric. both of (A) and (B). TRUE ANSWER : ? YOUR ANSWER : ?
The coils having self inductor of 10 mH and 15 mH have an effective inductor of 40 mH, when connected in series aiding. What will be the equivalent inductor if we connect them in series opposing 0 mH. 5 mH. 20 mH. 10 mH. TRUE ANSWER : ? YOUR ANSWER : ?
In a 3 - φ delta connection, two-wattmeter method is used to measure the power; if the two watt meters read 28.13 kW and 13.31 kW, the power factor of connection will be 0.6. 0.85. 0.9. 0.4. TRUE ANSWER : ? YOUR ANSWER : ?
A 230V, 50Hz voltage is applied to a coil having L = 5H and R = 2 Ohm in series with capacitance C. When the voltage across the coil is 400V, find the value of C? 10.54 µF. 8.51 µF. 1.8 µF. 4.78 µF. TRUE ANSWER : ? YOUR ANSWER : ?
The electrical resistance of human body is around 25 ohms. 5 ohms. 1000 ohms. 250 ohms. TRUE ANSWER : ? YOUR ANSWER : ?
If 1 A current flows in a circuit, the number of electrons flowing through this circuit is 1.6 × 10 - 19 0.625 × 10 - 19 0.625 × 1019 1.6 × 1019 TRUE ANSWER : ? YOUR ANSWER : ?
Among the options which metal has the highest electrical conductivity? Steel. Stranded aluminium. Aluminium. Copper. TRUE ANSWER : ? YOUR ANSWER : ?