# Average Power MCQ’s

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

1. Average power (P_{avg})=?

a) V_{eff}I_{m}cosθ

b) V_{eff}I_{eff}cosθ

c) V_{m}I_{m}cosθ

d) V_{m}I_{eff}cosθ

2. In case of purely resistive circuit, the average power is?

a) V_{m}I_{m}

b) V_{m}I_{m}/2

c) V_{m}I_{m}/4

d) V_{m}I_{m}/8

3. The equation of the average power (P_{avg}) is?

a) (V_{m}I_{m}/2)cosθ

b) (V_{m}I_{m}/2)sinθ

c) V_{m}I_{m}cosθ

d) V_{m}I_{m}sinθ

4. In case of purely capacitive circuit, average power = ____ and θ = _____

a) 0, 0⁰

b) 1, 0⁰

c) 1, 90⁰

d) 0, 90⁰

5. If a circuit has complex impedance, the average power is ______

a) power stored in inductor only

b) power stored in capacitor only

c) power dissipated in resistor only

d) power stored in inductor and power dissipated in resistor

6. A voltage v (t) = 100sinωt is applied to a circuit. The current flowing through the circuit is i(t) = 15sin(ωt-30⁰). Find the effective value of current.

a) 9

b) 10

c) 11

d) 12

7. In case of purely inductive circuit, average power = ____ and θ = ______

a) 0, 90⁰

b) 1, 90⁰

c) 1, 0⁰

d) 0, 0⁰

8. A voltage v (t) = 100sinωt is applied to a circuit. The current flowing through the circuit is i(t) = 15sin(ωt-30⁰). Find the effective value of voltage.

a) 70

b) 71

c) 72

d) 73

9. A voltage v (t) = 100sinωt is applied to a circuit. The current flowing through the circuit is i(t) = 15sin(ωt-30⁰). Determine the average power delivered to the circuit.

a) 620

b) 630

c) 640

d) 650

10. Determine the average power delivered to the circuit consisting of an impedance Z = 5+j8 when the current flowing through the circuit is I = 5∠30⁰.

a) 61.5

b) 62.5

c) 63.5

d) 64.5

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