Explore topic-wise MCQs in Network Theory.

This section includes 5 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.

If the resistors of star connected system are R1, R2, R3 then the resistance between 3 and 1 in delta connected system will be?

A. (R<sub>1</sub>R<sub>2</sub> + R<sub>2</sub>R<sub>3</sub> + R<sub>3</sub>R<sub>1</sub>)/R<sub>1</sub>
B. (R<sub>1</sub>R<sub>2</sub> + R<sub>2</sub>R<sub>3</sub> + R<sub>3</sub>R<sub>1</sub>)/R<sub>3</sub>
C. (R<sub>1</sub>R<sub>2</sub> + R<sub>2</sub>R<sub>3</sub> + R<sub>3</sub>R<sub>1</sub>)/R<sub>2</sub>
D. (R<sub>1</sub>R<sub>2</sub> + R<sub>2</sub>R<sub>3</sub> + R<sub>3</sub>R<sub>1</sub>)/(R<sub>3</sub>+R<sub>1</sub>)
Answer» D. (R<sub>1</sub>R<sub>2</sub> + R<sub>2</sub>R<sub>3</sub> + R<sub>3</sub>R<sub>1</sub>)/(R<sub>3</sub>+R<sub>1</sub>)
Discussion
2.

If the resistors of star connected system are R1, R2, R3 then the resistance between 2 and 3 in delta connected system will be?

A. (R<sub>1</sub>R<sub>2</sub> + R<sub>2</sub>R<sub>3</sub> + R<sub>3</sub>R<sub>1</sub>)/R<sub>3</sub>
B. (R<sub>1</sub>R<sub>2</sub> + R<sub>2</sub>R<sub>3</sub> + R<sub>3</sub>R<sub>1</sub>)/R<sub>2</sub>
C. (R<sub>1</sub>R<sub>2</sub> + R<sub>2</sub>R<sub>3</sub> + R<sub>3</sub>R<sub>1</sub>)/R<sub>1</sub>
D. (R<sub>1</sub>R<sub>2</sub> + R<sub>2</sub>R<sub>3</sub> + R<sub>3</sub>R<sub>1</sub>)/(R<sub>3</sub>+R<sub>2</sub>)
Answer» D. (R<sub>1</sub>R<sub>2</sub> + R<sub>2</sub>R<sub>3</sub> + R<sub>3</sub>R<sub>1</sub>)/(R<sub>3</sub>+R<sub>2</sub>)
Discussion
3.

If a resistor Rx is connected between nodes X and Y, Ry between X and Y, Rz between Y and Z to form a delta connection, then after transformation to star, the resistance at node Z is?

A. R<sub>y</sub>R<sub>x</sub>/(R<sub>x</sub>+R<sub>y</sub>+R<sub>z</sub>)
B. R<sub>y</sub>R<sub>x</sub>/(R<sub>x</sub>+R<sub>y</sub>+R<sub>z</sub>)
C. R<sub>z</sub>R<sub>y</sub>/(R<sub>x</sub>+R<sub>y</sub>+R<sub>z</sub>)
D. (R<sub>z</sub>+R<sub>x</sub>)/(R<sub>x</sub>+R<sub>y</sub>+R<sub>z</sub>)
Answer» D. (R<sub>z</sub>+R<sub>x</sub>)/(R<sub>x</sub>+R<sub>y</sub>+R<sub>z</sub>)
Discussion
4.

If a resistor Rx is connected between nodes X and Y, Ry between X and Y, Rz between Y and Z to form a delta connection, then after transformation to star, the resistance at node Y is?

A. R<sub>z</sub>R<sub>y</sub>/(R<sub>x</sub>+R<sub>y</sub>+R<sub>z</sub>)
B. R<sub>z</sub>R<sub>x</sub>/(R<sub>x</sub>+R<sub>y</sub>+R<sub>z</sub>)
C. R<sub>x</sub>R<sub>y</sub>/(R<sub>x</sub>+R<sub>y</sub>+R<sub>z</sub>)
D. (R<sub>z</sub>+R<sub>y</sub>)/(R<sub>x</sub>+R<sub>y</sub>+R<sub>z</sub>)
Answer» C. R<sub>x</sub>R<sub>y</sub>/(R<sub>x</sub>+R<sub>y</sub>+R<sub>z</sub>)
Discussion
5.

If a resistor Rx is connected between nodes X and Y, Ry between X and Y, Rz between Y and Z to form a delta connection, then after transformation to star, the resistor at node X is?

A. R<sub>x</sub>R<sub>y</sub>/(R<sub>x</sub>+R<sub>y</sub>+R<sub>z</sub>)
B. R<sub>x</sub>R<sub>z</sub>/(R<sub>x</sub>+R<sub>y</sub>+R<sub>z</sub>)
C. R<sub>z</sub>R<sub>y</sub>/(R<sub>x</sub>+R<sub>y</sub>+R<sub>z</sub>)
D. (R<sub>x</sub>+R<sub>y</sub>)/(R<sub>x</sub>+R<sub>y</sub>+R<sub>z</sub>)
Answer» B. R<sub>x</sub>R<sub>z</sub>/(R<sub>x</sub>+R<sub>y</sub>+R<sub>z</sub>)
Discussion