# Electronics and Communication Engineering - Electromagnetic Field Theory

1.

Which of the following laws of electromagnetic theory is associated with the force experienced by two loops of a wire carrying currents?

 A. Maxwell's law B. Coulomb's law C. Ampere's law D. Laplace's law

Explanation:

No answer description available for this question. Let us discuss.

2.

The intrinsic impedance of free space

 A. increases with increase of frequency B. decreases with increase of frequency C. is independent of frequency D. none

Explanation:

No answer description available for this question. Let us discuss.

3.

To couple a coaxial line to a parallel to wire line it is best to use a

 A. slotted line B. balun C. directional coupler D. quarter wave transformer

Explanation:

No answer description available for this question. Let us discuss.

4.

The shunt admittance of a transmission line is given by

 A. γ = R + jωL B. γ = R - jωL C. γ = G + jωC D. γ = jωGC

Explanation:

No answer description available for this question. Let us discuss.

5.

A dipole antenna was radiating with some excitation in free space radiating a certain amount of the power. If this antenna is immersed in a lake where water is non-dissipative but has a dielectric constant of 81, the radiated power with the same excitation will

 A. decrease to finite non-zero value B. remain the same C. increase D. decrease to zero