Circuit Theorems And Conversions

This is an MCQ-based quiz on Circuit Theorems and Conversions.

This includes Superposition, Thevenin's Theorem, Norton's Equivalent Circuit, and Maximum Power Transfer.

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A 120 Ω load is connected across an ideal voltage source with VS = 12 V. The voltage across the load is

0 V 12 V 120 V Cannot be determined

A 2 Ω RL is connected across a voltage source, VS, of 110 V. The source’s internal resistance is 24 Ω. What is the output voltage across the load?

8.5 V 85 V 0 V 110 V

A 12 mA current source has an internal resistance, RS, of 1.2 kΩ. The equivalent voltage source is

144 V 14.4 V 7.2 V 72 mV

In a two-source circuit, one source acting alone produces 12 mA through a given branch. The other source acting alone produces 10 mA in the opposite direction through the same branch. The actual current through the branch is

22 mA 12 mA 10 mA 2 mA

A 470 Ω RL is connected across a voltage source, VS, of 120 V. The source’s internal resistance, RS, is 12 Ω. What is the output voltage across the load?

120 V 0 V 117 V 12 V

A 120 Ω load is connected across a voltage source with VS = 12 V and RS = 8 Ω. The voltage across the load is

11.25 V 0 V 12 V 1.13 V

A 120 V voltage source has a source resistance, RS, of 60 Ω. The equivalent current source is

2 A 4 A 200 mA 400 mA

An 18 V source has an internal resistance of 70 Ω. If a load resistance of 33 Ω is connected to the voltage source, the load power, PL, is

0 W 1 W 175 mW 18 mW

A 680 Ω load resistor, RL, is connected across a constant current source of 1.2 A. The internal source resistance, RS, is 12 kΩ. The load current, RL, is

0 A 1.2 A 114 mA 1.14 A

A 12 V source has an internal resistance of 90 Ω. If a load resistance of 20 Ω is connected to the voltage source, the load power, PL, is

2.38 mW 2.38 W 238 mW 23.8 W

A voltage source having an open-circuit voltage of 100 V and internal resistance of 50 ω is equivalent to a current source:

2 A in parallel with 50 ω 2 A with 50 ω in series 0.5 A in parallel with 50 ω A in parallel with 100 ω

The superposition theorem is applicable to:

linear, non-linear and time variant responses linear and non-linear resistors only linear responses only none of the above

An ideal current source has ___ in parallel with the source.

an infinite output impedance zero internal resistance zero internal impedance None of the above

What is Norton’s equivalent current?

The current source present in the Norton's equivalent circuit is called as Norton's equivalent current.

The current source present in the circuit is called as Norton's equivalent current.

The voltage source present in the Norton's equivalent circuit is called as Norton's equivalent current.

All of the above

Quiz/Test Summary
Title: Circuit Theorems And Conversions
Questions: 14
Contributed by:
Diego