Circuit Theorems And Conversions MCQ Questions & Answers | Electrical Engineering

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Important Theory

16.
A 120 Ω load is connected across a voltage source with VS = 12 V and RS = 8 Ω. The voltage across the load is

A. 11.25 V

B. 0 V

C. 12 V

D. 1.13 V

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17.
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

A. 2.38 mW

B. 2.38 W

C. 238 mW

D. 23.8 W

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18.
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

A. 0 W

B. 1 W

C. 175 mW

D. 18 mW

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19.
Some circuits require more than one voltage or current source.

A. True

B. False

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20.
Referring to the given circuit, determine V_TH and RTH if a 68 Ω resistor is connected in parallel across R2 and R3.

A. 3.3 V, 148 Ω

B. 330 mV, 148 Ω

C. 3.3 V, 68 Ω

D. 330 mV, 68 Ω

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