Quiz

Q1. A bulb of 300 W, 120 V rating when connected to a 120 V, 50 Hz supply will draw a current of

Q2. A series RLC circuit has resonance frequency of 1000 Hz. If they inductance is made 4 times, the resonance frequency will be

Q3. A load is connected to a network. At the Terminals to which the load is connected, \(R_{TH}=10\:\Omega\) and \(V_{TH}=40\:V.\). The maximum possible power supplied to the load is:

Q4. In the RLC series circuit shown in Fig. resonance occurs when the value of C is \(20\:\mu F\). The supply voltage is \(v(t) = 20 \sin (500 t)\: V\). Find the value of L.

Q5. A \(10\: V\) battery with an internal resistance of \(1\:\Omega\) is connected across a non-linear load whose \(V- I\) characteristic are \(7I = V^2 + 2V\). The current delivered by the battery is

Q6. The energy stored in the magnetic field of solenoid 30 cm long and 3 cm diameter wound with 1000 turns of wire carrying current of 10 A is

Q7. Four equal value resistors are connected in parallel. 5V are applied across the parallel circuit and 2.5mA are measured from the source. What is the value of each resistor ?

Q8. A \(5^\circ C\) rise in temperature is observed in a conductor by passing a current. When the current is doubled, the rise in temperature will be

Q9. In two-wattmeter method, the readings of wattmeter for a balanced load are, P1 = 800 W, P2 = 600W. What is the reactive power of the load?

Q10. If 1 A current flows in a circuit, the number of electrons flowing through this circuit is