At very low frequencies a series R-C circuit behaves as almost purely___________?

Related Mcqs:

1. At _______ frequencies the parallel R-L circuit behaves as purely resistive

   A. low
   B. very low
   C. high
   D. very high

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

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

3. 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

4. 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

5. 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

6. 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

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

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

8. All definitions of power factor of a series R-L-C circuit are correct except__________?

   A. ratio of net reactance and impedance
   B. ratio of kW and kVA
   C. ratio of J and Z
   D. ratio of W and VA

9. The time constant of a series R-C circuit is given by____________?

   A. R/C
   B. RC2
   C. RC
   D. R2C

10. In R-L-C series resonant circuit magnitude of resonance frequency can be changed by changing the value of__________?

    A. R only
    B. L only
    C. C only
    D. LorC
    E. R,LorC