Electromagnetic Field Theory Objective Questions and Answers Pdf - 1
Question: 1
Conservative properties are applicable only to
(A) time varying electric and magnetic field
(B) time varying magnetic field
(C) time varying electric field
(D) electrostatic field
Ans: D
electrostatic field
Question: 2
The magnitude of the induced emf in a conductor depends upon the
(A) rate of change of flux linkage
(B) flux density of the magnetic field
(C) amount of flux cut
(D) amount of flux linkage
Ans: A
rate of change of flux linkage
Question: 3
Image theory is applicable to problems involving
(A) magnetostatic fields only
(B) electrostatic field only
(C) both electrostatic and magnetostatic fields
(D) neither electrostatic nor magnetostatic fields
Ans; B
electrostatic field only
Question: 4
The main purpose of choke is
(A) to pass low frequencies
(B) to block low frequencies
(C) to pass high frequencies
(D) none of the above
Ans: A
to pass low frequencies
Question: 5
The attraction capacity of electromagnet will increase if the
(A) flux density decreases
(B) flux density increases
(C) core length increases
(D) core area increases
Ans: B
flux density increases
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