Explore topic-wise MCQs in Network Theory.

This section includes 9 Mcqs, each offering curated multiple-choice questions to sharpen your Network Theory knowledge and support exam preparation. Choose a topic below to get started.

1.

Determine the power (kW) drawn by the load.

A. 21
B. 22
C. 23
D. 24
Answer» E.
Discussion
2.

A three-phase balanced delta connected load of (4+j8) is connected across a 400V, 3 balanced supply. Determine the phase current IB.

A. 44.74 303.4 A
B. 44.74 -303.4 A
C. 45.74 303.4 A
D. 45.74 -303.4 A
Answer» C. 45.74 303.4 A
Discussion
3.

A three-phase balanced delta connected load of (4+j8) is connected across a 400V, 3 balanced supply. Determine the phase current IY.

A. 44.74 183.4 A
B. 45.74 183.4 A
C. 44.74 183.4 A
D. 45.74 -183.4 A
Answer» D. 45.74 -183.4 A
Discussion
4.

A three-phase balanced delta connected load of (4+j8) is connected across a 400V, 3 balanced supply. Determine the phase current IR. Assume the phase sequence to be RYB.

A. 44.74 -63.4 A
B. 44.74 63.4 A
C. 45.74 -63.4 A
D. 45.74 63.4 A
Answer» B. 44.74 63.4 A
Discussion
5.

If the load impedance is Z , the expression obtained for current (IB) is?

A. (V/Z) -240+
B. (V/Z) -240-
C. (V/Z) 240-
D. (V/Z) 240+
Answer» C. (V/Z) 240-
Discussion
6.

If the load impedance is Z , the expression obtained for current (IY) is?

A. (V/Z) -120+
B. (V/Z) 120-
C. (V/Z) 120+
D. (V/Z) -120-
Answer» E.
Discussion
7.

If the load impedance is Z , the current (IR) is?

A. (V/Z) -
B. (V/Z)
C. (V/Z) 90-
D. (V/Z) -90+
Answer» B. (V/Z)
Discussion
8.

In a balanced three-phase system-delta load, if we assume the line voltage is VRY = V 0 as a reference phasor. Then the source voltage VBR is?

A. V 120
B. V 240
C. V -240
D. V -120
Answer» D. V -120
Discussion
9.

In a balanced three-phase system-delta load, if we assume the line voltage is VRY = V 0 as a reference phasor. Then the source voltage VYB is?

A. V 0
B. V -120
C. V 120
D. V 240
Answer» C. V 120
Discussion