Circuit Theorems And Conversions(Engineering > Electrical Engineering ) Questions and answers for exam Preparation

Question 1. Transistors act basically as voltage sources.

True
False

Explanation:-

Answer: Option B. -> False

Question 2. Find RN for the circuit given.

34 Ω
68 Ω
120 Ω
154 Ω

Explanation:-

Answer: Option D. -> 154 Ω

Question 3. What is the Thevenin equivalent (VTH and RTH) for the circuit given?

6.4 V, 422 Ω
6.4 V, 560 Ω
6.4 V, 680 Ω
30 V, 422 Ω

Explanation:-

Answer: Option A. -> 6.4 V, 422 Ω

Question 4. Determine IN for the circuit consisting of VS, R1, R2, and R3 shown in the given circuit.

676 mA
245 mA
431 mA
75 mA

Explanation:-

Answer: Option B. -> 245 mA

Question 5. Find the total current through R3 in the given circuit.

7.3 mA
5.5 mA
12.8 mA
1.8 mA

Explanation:-

Answer: Option D. -> 1.8 mA

Question 6. Find the current through R2 of the given circuit.

30.7 mA
104 mA
74 mA
134 mA

Explanation:-

Answer: Option D. -> 134 mA

Question 7. Find the current through R1 in the given circuit.

0.16 A
0.24 A
0.2 A
0.04 A

Explanation:-

Answer: Option A. -> 0.16 A

Question 8. 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

Explanation:-

Answer: Option A. -> 8.5 V

Question 9. Referring to the given circuit, the voltage and current for the load resistor, RL, is

450 mV, 4.5 mA
4.50 V, 45 mA
4.50 V, 4.5 mA
450 mV, 45 mA

Explanation:-

Answer: Option C. -> 4.50 V, 4.5 mA

Question 10. 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

Explanation:-

Answer: Option C. -> 117 V