# Impedence Diagram MCQ’s

This set of Network Theory Multiple Choice Questions & Answers (MCQs) focuses on “Impedence Diagram”.

1. The voltage function v(t) in the circuit shown below is?

a) v(t) = Vm e-tjω
b) v(t) = Vmetjω
c) v(t) = etjω
d) v(t) = e-tjω

2. The current i(t) in the circuit shown below is?

a) i(t)=(Vm/(R-jωL))etjω
b) i(t)=(Vm(R+jωL)) etjω
c) i(t)=(Vm(R-jωL)) etjω
d) i(t)=(Vm/(R+jωL)) etjω

3. Impedance is a complex quantity having the real part as _______ and the imaginary part as ______
a) resistance, resistance
b) resistance, reactance
c) reactance, resistance
d) reactance, reactance

4. The impedance of the circuit shown below is?

a) R + jωL
b) R – jωL
c) R + 1/jωL
d) R – 1/jωL

5. The phase angle between current and voltage in the circuit shown below is?

a) tan-1⁡ωL/R
b) tan-1⁡ωR/
c) tan-1⁡R/ωL
d) tan-1⁡L/ωR

6. The impedance of the circuit shown below is?

a) R + jωC
b) R – jωC
c) R + 1/jωC
d) R – 1/jωC

7. What is the magnitude of the impedance of the following circuit?

a) √(R+ωL)
b) √(R-ωL)
c)√(R2+(ωL)2)
d) √(R2-(ωL)2)

8. The voltage function v(t) in the circuit shown below is?

a) v(t) = e-tjω
b) v(t) = etjω
c) v(t) = Vmetjω
d) v(t) = Vme-tjω

9. The magnitude of the impedance of the circuit shown below is?

a) √(R+1/ωC)
b) √(R-1/ωC)
c) √(R2+(1/ωC)2)
d) √(R2-(1/ωC)2)

10. The angle between resistance and impedance in the circuit shown below.

a) tan-11/ωRC
b) tan-1⁡C/ωR
c) tan-1⁡R/ωC
d) tan-1⁡ωRC