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Circuit Theorems And Conversions Online Exam Quiz

Important questions about Circuit Theorems And Conversions. Circuit Theorems And Conversions MCQ questions with answers. Circuit Theorems And Conversions exam questions and answers for students and interviews.

1. Find the Thevenin equivalent ( V TH and R TH ) between terminals A and B of the circuit given.

Options

A : 562 mV, 167 ?

B : 5.62 V, 167 ?

C : 5.62 V, 188 ?

D : 562 mV, 188 ?

2. Find R N for the circuit given.

Options

A : 34 ?

B : 68 ?

C : 120 ?

D : 154 ?

3. Find the current in R 2 of the given circuit, using the superposition theorem.

Options

A : 16.7 mA

B : 33.3 mA

C : 50 mA

D : 16.6 mA

4. A 120 V voltage source has a source resistance, R S , of 60 ?. The equivalent current source is

Options

A : 2 A

B : 4 A

C : 200 mA

D : 400 mA

5. An 18 V source has an internal resistance of 70 ?. If a load resistance of 33 ? is connected to the voltage source, the load power, P L , is

Options

A : 0 W

B : 1 W

C : 175 mW

D : 18 mW

6. A certain voltage source has the values V S = 30 V and R S = 6 ?. The values for an equivalent current source are

Options

A : 5 A, 6 ?

B : 30 A, 6 ?

C : 5 A, 30 ?

D : 30 A, 5 ?

7. A 120 ? load is connected across an ideal voltage source with V S = 12 V. The voltage across the load

Options

A : is 0 V

B : is 12 V

C : is 120 V

D : cannot be determined

8. A certain current source has the values I S = 4 µA and R S = 1.2 M?. The values for an equivalent voltage source are

Options

A : 4.8 µV, 1.2 M?

B : 1 V, 1.2 M?

C : 4.8 V, 4.8 M?

D : 4.8 V, 1.2 M?

9. Find the current through R 1 in the given circuit.

Options

A : 0.16 A

B : 0.24 A

C : 0.2 A

D : 0.04 A

10. A 680 ? load resistor, R L , is connected across a constant current source of 1.2 A. The internal source resistance, R S , is 12 k?. The load current, R L , is

Options

A : 0 A

B : 1.2 A

C : 114 mA

D : 1.14 A

1. Referring to the given circuit, the voltage and current for the load resistor, R L , is

Options

A : 450 mV, 4.5 mA

B : 4.50 V, 45 mA

C : 4.50 V, 4.5 mA

D : 450 mV, 45 mA

2. A 12 V source has an internal resistance of 90 ?. If a load resistance of 20 ? is connected to the voltage source, the load power, P L , is

Options

A : 2.38 mW

B : 2.38 W

C : 238 mW

D : 23.8 W

3. What is the Thevenin equivalent ( V TH and R TH ) for the circuit given?

Options

A : 6.4 V, 422 ?

B : 6.4 V, 560 ?

C : 6.4 V, 680 ?

D : 30 V, 422 ?

4. 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

Options

A : 22 mA

B : 12 mA

C : 10 mA

D : 2 mA

5. Referring to the given circuit, determine V TH and R TH if a 68 ? resistor is connected in parallel across R 2 and R 3 .

Options

A : 3.3 V, 148 ?

B : 330 mV, 148 ?

C : 3.3 V, 68 ?

D : 330 mV, 68 ?

6. A practical voltage source has a nonzero internal resistance.

Options

A : True

B : False

C :

D :

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

Options

A : True

B : False

C :

D :

8. You cannot convert a voltage source to an equivalent current source, or vice versa.

Options

A : True

B : False

C :

D :

9. Transistors act basically as voltage sources.

Options

A : True

B : False

C :

D :

10. Norton's equivalent current ( I N ) is an open-circuit current between two points in a circuit.

Options

A : True

B : False

C :

D :

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