Exercise: Electromagnetic Field Theory

Questions for: Electromagnetic Field Theory

The value of susceptibility in case of vacuum is taken as
A:
zero
B:
0.5
C:
unity
D:
infinity
Answer: A
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Given figure shows a 90° sector of spherical reflector with vertex 'V', centre of curvature 'C' and equal distances VD, DF, FE and EC. When a beam of EM wave is incident parallel to the axis, all the energy will pass through the region
A:
VD
B:
DF
C:
EF
D:
EC
Answer: D
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According to Siegel and Labus, antenna can be treated as
A:
closed transmission line
B:
shorted transmission line
C:
earthed transmission line
D:
opened-out transmission line
Answer: D
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According to maximum power transfer theorem, if the load is inductive, the source should be
A:
inductive
B:
capacitive
C:
resistive
D:
any of the above
Answer: B
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An electromagnetic wave is incident normally on a dielectric boundary. It is
A:
totally reflected
B:
partially reflected and partially refracted
C:
totally absorbed
D:
none of the above
Answer: B
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