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.

The resistance of a thermistor decreases with increases in __________

A. temperature
B. circuit
C. light control
D. sensors
Answer» C. light control
Discussion
2.

If A = 3 + j1, then A4 is equal to __________

A. 3.16 18.4
B. 100 73.72
C. 100 18.4
D. 3.16 73.22
Answer» C. 100 18.4
Discussion
3.

For making a capacitor, the dielectric should have __________

A. High relative permittivity
B. Low relative permittivity
C. Relative permittivity = 1
D. Relative permittivity neither too high nor too low
Answer» B. Low relative permittivity
Discussion
4.

If operator a = 1 120 . Then (1 a) is equal to ____________

A. ( sqrt{3} )
B. ( sqrt{3} ) -30
C. ( sqrt{3} ) 30
D. ( sqrt{3} ) 60
Answer» C. ( sqrt{3} ) 30
Discussion
5.

A 1 F capacitor is connected to 12 V batteries. The energy stored in the capacitor is _____________

A. 12 x 10<sup>-6</sup> J
B. 24 x 10<sup>-6</sup> J
C. 60 x 10<sup>-6</sup> J
D. 72 x 10<sup>-6</sup> J
Answer» E.
Discussion
6.

A two branch circuit has a coil of resistance R1, inductance L1 in one branch and capacitance C2 in the second branch. If R is increased, the dynamic resistance is going to ___________

A. Increase
B. Decrease
C. Remains constant
D. May increase or decrease
Answer» C. Remains constant
Discussion
7.

D is the distance between the plates of a parallel plate capacitor. The dielectric constants are 1 and 2 respectively. The total capacitance is proportional to ____________

A. ( frac{ _1 _2}{ _1+ _2} )
B. <sub>1</sub> <sub>2</sub>
C. ( frac{ _1}{ _2} )
D. <sub>1</sub> <sub>2</sub>
Answer» B. <sub>1</sub> <sub>2</sub>
Discussion
8.

A capacitor, used for power factor correction in a single phase circuit decreases which of the following?

A. Power factor
B. Line current
C. Both Line current and Power factor
D. Neither Line current nor Power factor
Answer» C. Both Line current and Power factor
Discussion
9.

Branch current and loop current relation is expressed in matrix form shown below, where Ij represents branch current and Ik represents loop current.[I1; I2; I3; I4; I5; I6; I7; I8] = [0 0 1 0; -1 -1 -1 0; 0 1 0 0; 1 0 0 0; 0 0 -1 -1; 1 1 0 -1; 1 0 0 0; 0 0 0 1] [I1; I2; I3; I4]The rank of the incidence matrix is?

A. 4
B. 5
C. 6
D. 8
Answer» B. 5
Discussion