1000+ Electromagnetic Field Multiple Choice Questions and Answers - 1
Question: 1
Gradient of scalar field is expressed as
(A) maximum rate of increase of scalar function at a point
(B) circulation of a vector field per unit area as the area tends to zero
(C) gradient of divergence of a vector field minus the curl of the vector field
(D) outward flux of a vector field per unit volume as the volume about the point tends to zero
Ans: A
maximum rate of increase of scalar function at a point
Question: 2
The force between two long parallel conductors is inversely proportional to
(A) distance between the two conductors
(B) product of current in two conductors
(C) radius of conductors
(D) current in one conductor
Ans: B
product of current in two conductors
Question: 3
The real part of the propagation constant shows
(A) variation of phase shift/position of voltage
(B) reduction of only current amplitude
(C) reduction of only voltage amplitude
(D) reduction in voltage, current values of signal amplitude
Ans: D
reduction in voltage, current values of signal amplitude
Question: 4
RF inductor are characterized by
(A) low current rating rating and high resistance
(B) high current rating and low resistance
(C) low current rating and low resistance
(D) high current rating and high resistance
Ans: A
low current rating rating and high resistance
Question: 5
When an EM wave is incident on a dielectric, it is
(A) fully transmitted
(B) partially transmitted and partially reflected
(C) fully reflected
(D) none of the above
Ans: B
partially transmitted and partially reflected
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