# Electrical Engineering - Circuit Theorems in AC Analysis

## Why Electrical Engineering Circuit Theorems in AC Analysis?

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## How to solve Electrical Engineering Circuit Theorems in AC Analysis problems?

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### Exercise :: Circuit Theorems in AC Analysis - General Questions

1.

Determine VTH when R1 is 180 and XL is 90 . A. 135 63.4° V B. 13.5 63.4° V C. 12.2 0° V D. 122 0° V

Explanation:

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2.

For the given circuit, find VTH for the circuit external to RL. A. 4.69 51.3° V B. 4.69 38.7° V C. 469 38.7° mV D. 6 0° V

Explanation:

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3.

Referring to the given circuit, find ZTH if R is 15 k and RL is 38 k . A. 89.82 –51.3° k B. 19.2 –38.3° k C. 9.38 –51.3° k D. 180 –38.3° k Explanation:

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4.

For the circuit shown, determine ZTH for the portion of the circuit external to RL. A. 66.7 –33.7° k B. 6.67 –333.7° k C. 14.4 –56.3° k D. 1.44 –33.7° k Explanation:

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5.

Referring to the given circuit, what is ZTH if R1 is changed to 220 ? A. 225 12.1° B. 225 77.9° C. 46 77.9° D. 46 12.1° 