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Electronics and Communication Engineering - Electromagnetic Field Theory

Exercise : Electromagnetic Field Theory - Section 4
16.
For an ideal antenna, numerical value of directivity must be
∞
0
1
any value
Answer: Option
Explanation:
No answer description is available. Let's discuss.
17.
The force in a magnetic field is given by F = qvB
F and q are perpendicular and v and B are perpendicular
F and q only are perpendicular to each other
F and v, F and B are mutually perpendicular to each other and v and B at any angle between them
All the four components are perpendicular to each other
Answer: Option
Explanation:
No answer description is available. Let's discuss.
18.
An electromagnetic wave is incident normally on a dielectric boundary. It is
totally reflected
partially reflected and partially refracted
totally absorbed
none of the above
Answer: Option
Explanation:
No answer description is available. Let's discuss.
19.
According to maximum power transfer theorem, if the load is inductive, the source should be
inductive
capacitive
resistive
any of the above
Answer: Option
Explanation:
No answer description is available. Let's discuss.
20.
According to Siegel and Labus, antenna can be treated as
closed transmission line
shorted transmission line
earthed transmission line
opened-out transmission line
Answer: Option
Explanation:
No answer description is available. Let's discuss.
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