Explore topic-wise MCQs in Electrical Engineering.

This section includes 24 Mcqs, each offering curated multiple-choice questions to sharpen your Electrical Engineering knowledge and support exam preparation. Choose a topic below to get started.

1.

Third-order determinants are evaluated by the expansion method or by the cofactor method.

A. True
B. False
Answer» B. False
Discussion
2.

When assigning branch currents, you need not be concerned with the direction you choose.

A. True
B. False
Answer» B. False
Discussion
3.

The mesh current method is based on Kirchhoff's current law.

A. True
B. False
Answer» C.
Discussion
4.

Second-order determinants are evaluated by subtracting the signed cross-products.

A. True
B. False
Answer» C.
Discussion
5.

The mesh method can be applied to circuits with any number of loops.

A. True
B. False
Answer» B. False
Discussion
6.

The first row of a certain determinant has the numbers 3 and 5. The second row has the numbers 7 and 2. The value of this determinant is

A. 31
B. -31
C. 39
D. -29
Answer» E.
Discussion
7.

In assigning the direction of branch currents.

A. The directions are critical
B. The directions are not critical
C. They must point into a node
D. They must point out of a node
Answer» C. They must point into a node
Discussion
8.

The branch current method uses.

A. Kirchhoff's voltage and current laws
B. Thevenin's theorem and Ohm's law
C. Kirchhoff's current law and Ohm's law
D. The superposition theorem and Thevenin's theorem
Answer» B. Thevenin's theorem and Ohm's law
Discussion
9.

Using the mesh current method, find the branch current, IR1, in the above figure.

A. 115 mA
B. 12.5 mA
C. 12.5 A
D. 135 mA
Answer» B. 12.5 mA
Discussion
10.

What is the voltage drop across R2?

A. 3.5 V
B. 4.18 V
C. 1.5 V
D. 145 mV
Answer» C. 1.5 V
Discussion
11.

In assigning the direction of branch currents,

A. the directions are critical
B. the directions are not critical
C. they must point into a node
D. they must point out of a node
Answer» C. they must point into a node
Discussion
12.

Find I1. 4I1 + 4I2 = 2 6I1 + 7I2 = 4

A. 0.5 A
B. 50 mA
C. –0.5 A
D. –50 mA
Answer» D. ‚Äì50 mA
Discussion
13.

The branch current method is based on Kirchhoff's voltage law and Kirchhoff's current law.

A. 1
B.
Answer» B.
Discussion
14.

The expansion method for evaluating determinants is

A. better than any other method
B. good for only one determinant
C. more flexible than the cofactor method
D. good for second- and third-order determinants
Answer» E.
Discussion
15.

A loop current is an actual current in a branch.

A. 1
B.
Answer» C.
Discussion
16.

Generally, the mesh current method results in fewer equations than the node voltage method.

A. 1
B.
C. 1
D.
Answer» C. 1
Discussion
17.

The first row of a certain determinant has the numbers 10 and 6. The second row has the numbers 3 and 5. The value of this determinant is

A. 18
B. 50
C. 32
D. –32
Answer» D. ‚Äì32
Discussion
18.

Find I2. 4I1 + 4I2 = 2 6I1 + 7I2 = 4

A. 0.041666666666667
B. –1 A
C. 100 mA
D. –100 mA
Answer» B. ‚Äì1 A
Discussion
19.

What is the current through R2?

A. 177 mA
B. 250 mA
C. 500 mA
D. 125 mA
Answer» B. 250 mA
Discussion
20.

The node voltage method is based on Kirchhoff's voltage law.

A. 1
B.
C. 1
D.
Answer» C. 1
Discussion
21.

What is the voltage drop across R1?

A. 850 mV
B. 7.82 V
C. 9.18 V
D. 918 mV
Answer» C. 9.18 V
Discussion
22.

Find branch current IR2.

A. 5.4 mA
B. –5.4 mA
C. 113.0 mA
D. 119.6 mA
Answer» D. 119.6 mA
Discussion
23.

The branch current method uses

A. Kirchhoff's voltage and current laws
B. Thevenin's theorem and Ohm's law
C. Kirchhoff's current law and Ohm's law
D. the superposition theorem and Thevenin's theorem
Answer» B. Thevenin's theorem and Ohm's law
Discussion
24.

Find the node voltage VA.

A. 6 V
B. 12 V
C. 4.25 V
D. 3 V
Answer» D. 3 V
Discussion