In a loss-free R-L-C circuit the transient current is__________?

Related Mcqs:

1. The input of an A.C. circuit having power factor of 0.8 lagging is 40 kVA The power drawn by the circuit is__________?

   A. 12 kW
   B. 22 kW
   C. 32 kW
   D. 64 kW

2. The power consumed in a circuit element will be least when the phase difference between the current and voltage is__________?

   A. 180″
   B. 90°
   C. 60°
   D. 0°

3. The double energy transient occur in the____________?

   A. purely inductive circuit
   B. R-L circuit
   C. R-C circuit
   D. R-L-C circuit

4. The transient currents are associated with the____________?

   A. changes in the stored energy in the inductors and capacitors
   B. impedance of the circuit
   C. applied voltage to the circuit
   D. resistance of the circuit

5. In a circuit containing R, L and C, power loss can take place in____________?

   A. C only
   B. L only
   C. R only
   D. all above

6. In a series resonant circuit, the impedance of the circuit is___________?

   A. minimum
   B. maximum
   C. zero
   D. none of the above

7. All the rules and laws of D.C. circuit also apply to A.C. circuit containing_____________?

   A. capacitance only
   B. inductance only
   C. resistance only
   D. all above

8. The apparent power drawn by an A.C. circuit is 10 kVA and active power is 8 kW. The reactive power in the circuit is_________?

   A. 4 kVAR
   B. 6 kVAR
   C. 8 kVAR
   D. 16 kVAR

9. If resistance is 20 Q. and inductance is 27 in a R-L series circuit, then time constant of this circuit will be________?

   A. 0.001 s
   B. 0.1 s
   C. 10 s
   D. 100 s

10. Which of the following circuit component opposes the change in the circuit voltage ?

    A. Inductance
    B. Capacitance
    C. Conductance
    D. Resistance