Practice Circuit Theorems And Conversions Multiple Choice Questions with Answers Quiz-5

Q.1.

Referring to the given circuit, determine VTH and RTH if aΩ resistor is connected in parallel across R2 and R3.

3.3 V, 148 Ω
330 mV, 148 Ω
3.3 V, 68 Ω
330 mV, 68 Ω

Q.2.

Some circuits require more than one voltage or current source.

True
False

Q.3.

AV source has an internal resistance ofΩ. If a load resistance ofΩ is connected to the voltage source, the load power, PL, is

2.38 mW
2.38 W
238 mW
23.8 W

Q.4.

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

11.25 V
0 V
12 V
1.13 V

Q.5.

AΩ load is connected across an ideal voltage source with VS =V. The voltage across the load is

0 V
12 V
120 V
Cannot be determined

Q.6.

Referring to circuit given, if R1 is changed to aΩ resistor, what will be the current through it?

0.16 A
0.24 A
0.2 A
0.04 A

Q.7.

Find the Thevenin equivalent (VTH and RTH) between terminals A and B of the circuit given below.

4.16 V, 120 Ω
41.6 V, 120 Ω
4.16 V, 70 Ω
41.67 V, 70 Ω

Q.8.

Find the Norton circuit, that is, IIN and RN, for the circuit given below.

478 mA, 12.8 Ω
750 mA, 12.8 Ω
478 mA, 6.8 Ω
750 mA, 6.8 Ω

Q.9.

Conversions between delta-type and wye-type circuit arrangements are useful in certain specialized applications.

True
False

Q.10.

AΩ RL is connected across a voltage source, VS, ofV. The source's internal resistance, RS, isΩ. What is the output voltage across the load?

120 V
0 V
117 V
12 V

Q.11.

Find the current through R2 of the given circuit.

30.7 mA
104 mA
74 mA
134 mA

Q.12.

Find the current through R1 in the given circuit.

0.16 A
0.24 A
0.2 A
0.04 A

Q.13.

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

Q.14.

A 2 Ω RL is connected across a voltage source, VS, ofV. The source's internal resistance isΩ. What is the output voltage across the load?

8.5 V
85 V
0 V
110 V

Q.15.

Transistors act basically as voltage sources.

True
False

Q.16.

Find the total current through R3 in the given circuit.

7.3 mA
5.5 mA
12.8 mA
1.8 mA

Q.17.

Determine IN for the circuit consisting of VS, RRand R3 shown in the given circuit.

676 mA
245 mA
431 mA
75 mA

Q.18.

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

Q.19.

Find RN for the circuit given.

34 Ω
68 Ω
120 Ω
154 Ω

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