This set of Network Theory Multiple Choice Questions & Answers (MCQs) focuses on “Phase Relation in a Pure Resistor”.

1. In the case of inductor, the voltage?

a) is in phase with the current

b) lags behind the current by 90⁰

c) leads the current by 90⁰

d) is out of phase with the current

2. For inductor, what is the current?

a) is out of phase with the current

b) leads the current by 90⁰

c) is in phase with the current

d) lags behind the current by 90⁰

3. The phase difference between voltage and current in case of resistor is?

a) in phase

b) out of phase

c) 45⁰ out of phase

d) 90⁰ out of phase

4. The value of inductance reactance is?

a) R

b) ωL

c) 1/ωL

d) ωC

5. In case of pure capacitor, the voltage?

a) leads the voltage by 90⁰

b) lags behind the voltage by 45⁰

c) lags behind the voltage by 90⁰

d) is in phase with the voltage

6. One sine wave has a positive peak at 75⁰, and another has a positive peak at 100⁰. How much is first sine wave shifted in phase from the 0⁰ reference?

a) leads reference angle by 10⁰

b) lags reference angle by 10⁰

c) leads reference angle by 15⁰

d) lags reference angle by 15⁰

7. The current in the pure capacitor?

a) lags behind the voltage by 90⁰

b) is in phase with the voltage

c) lags behind the voltage by 45⁰

d) leads the voltage by 90⁰

8. The impedance value of a pure capacitor is?

a) ωC

b) 1/ ωC

c) ωL

d) R

9. One sine wave has a positive peak at 75⁰, and another has a positive peak at 100⁰. How much is second sine wave shifted in phase from the 0⁰ reference?

a) lags reference angle by 15⁰

b) leads reference angle by 15⁰

c) lags reference angle by 10⁰

d) leads reference angle by 10⁰

10. One sine wave has a positive peak at 75⁰, and another has a positive peak at 100⁰. What is the phase angle between two sine waves?

a) 10⁰

b) 15⁰

c) 20⁰

d) 25⁰