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Electronics and Communication Engineering - Electromagnetic Field Theory

Exercise : Electromagnetic Field Theory - Section 4
1.
Which of the following laws of electromagnetic theory is associated with the force experienced by two loops of a wire carrying currents?
Maxwell's law
Coulomb's law
Ampere's law
Laplace's law
Answer: Option
Explanation:
No answer description is available. Let's discuss.
2.
The intrinsic impedance of free space
increases with increase of frequency
decreases with increase of frequency
is independent of frequency
none
Answer: Option
Explanation:
No answer description is available. Let's discuss.
3.
To couple a coaxial line to a parallel to wire line it is best to use a
slotted line
balun
directional coupler
quarter wave transformer
Answer: Option
Explanation:
No answer description is available. Let's discuss.
4.
The shunt admittance of a transmission line is given by
γ = R + jωL
γ = R - jωL
γ = G + jωC
γ = jωGC
Answer: Option
Explanation:
No answer description is available. Let's 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
decrease to finite non-zero value
remain the same
increase
decrease to zero
Answer: Option
Explanation:
No answer description is available. Let's discuss.
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