Top 350+ Solved Electromagnetics MCQ Questions Answer

From 271 to 285 of 442

Q. The coaxial cable consists of

a. conductors

b. dielectric

c. conductor with dielectric

d. two conductors with dielectric

  • d. two conductors with dielectric

Q. The transmission line is said to be lossless when the

a. conductor is perfect and dielectric is lossless

b. conductor is perfect and dielectric is lossy

c. conductor is imperfect and dielectric is lossy

d. conductor is imperfect and dielectric is lossless

  • a. conductor is perfect and dielectric is lossless

Q. The resistance of a lossless transmission line is

a. 0

b. 1

c. -1

d. infinity

Q. The attenuation constant is measured in the units of

a. ohm

b. neper

c. decibel

d. radian/sec

  • b. neper

Q. The condition that holds good in a distortionless transmission line is

a. r/l = g/c

b. rl = gc

c. l/r = c/g

d. rg/lc

  • a. r/l = g/c

Q. The Smith chart is a polar chart which plots

a. r vs z

b. r vs znorm

c. t vs z

d. t vs znorm

  • b. r vs znorm

Q. The Smith chart consists of the

a. constant r and variable x circles

b. variable r and constant x circles

c. constant r and constant x circles

d. variable r and variable x circles

  • c. constant r and constant x circles

Q. The circles in the Smith chart pass through which point?

a. (0,1)

b. (0,-1)

c. (-1,0)

d. (1,0)

  • d. (1,0)

Q. Moving towards the clockwise direction in the Smith chart implies moving

a. towards generator

b. towards load

c. towards stub

d. towards waveguide

  • a. towards generator

Q. The centre of the point having a normalised resistance of 1.2 ohm andreactance of 1.5 ohm is

a. (0.54,0)

b. (0.45,0)

c. (0.36,0)

d. (0.78,0)

  • a. (0.54,0)

Q. For time varying currents, the field or waves will be

a. electrostatic

b. magneto static

c. electromagnetic

d. electrical

  • c. electromagnetic

Q. According to Faraday’s law, EMF stands for

a. electromagnetic field

b. electromagnetic force

c. electromagnetic friction

d. electromotive force

  • d. electromotive force
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