Electromagnetic Field Theory MCQ Questions & Answers

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Learn Electromagnetic Field Theory MCQ questions & answers are available for a Electronics and Communications Engineering(ECE) students to clear GATE exams, various technical interview, competitive examination, and another entrance exam. Electromagnetic Field Theory MCQ question is the important chapter for a Electronics and Communications Engineering(ECE) and GATE students. Page-5 section-1

Each section contains 100 MCQs on Electromagnetic Field Theory .

A square corner reflector is used in

A) Radio astronomy B) Tv broadcast C) Point to point communication D) All of the above

Discuss

Answer & Solution

Answer: Option D

No explanation is given for this question. Let's Discuss on Board

In microwave communication links, when fading due to rain attenuation occurs then technique adopted for solving the problem would include

A) Antenna replacement and feed correction B) Amplitude timing and phase correction C) Polarization shifting and code diversity D) Path diversity and frequency diversity

Discuss

Answer & Solution

Answer: Option D

No explanation is given for this question. Let's Discuss on Board

The power gain of a half-wave dipole with respect to an isotropic radiator is

A) 2.15 db B) 3 db C) 4.15 db D) 6 db

Discuss

Answer & Solution

Answer: Option A

No explanation is given for this question. Let's Discuss on Board

MUF is highest in periods of greatest sunspot activity.

A) True B) False

Discuss

Answer & Solution

Answer: Option A

No explanation is given for this question. Let's Discuss on Board

The attenuation in waveguide above to cut off frequency

A) Very high B) Very low C) Zero D) Infinite

Discuss

Answer & Solution

Answer: Option B

No explanation is given for this question. Let's Discuss on Board

A waveguide operated below cut off frequency can be used as

A) Phase shifter B) An attenuator C) An isolator D) None

Discuss

Answer & Solution

Answer: Option B

No explanation is given for this question. Let's Discuss on Board

The wave in wave guide has

A) Group velocity inversely proportional to wavelength B) Larger frequency than in the free space C) Diminishing wavelength than in the free space D) Larger wavelength than in the free space

Discuss

Answer & Solution

Answer: Option D

No explanation is given for this question. Let's Discuss on Board

Radiation intensity in a given direction is the

A) Energy radiated per square metre B) Power radiated per square metre C) Power radiated per unit solid angle in that direction D) None of the above

Discuss

Answer & Solution

Answer: Option C

No explanation is given for this question. Let's Discuss on Board

Which of the following impedance inversion is obtained?

A) Short-circuited stub B) A quarter wave line C) Balun transformer D) A half wave line

Discuss

Answer & Solution

Answer: Option B

No explanation is given for this question. Let's Discuss on Board

When a conductor moves in the field, so that it makes an angle 8 with the lines of flux, the force F is given as : F = Bl sin2 0.

A) Yes B) No

Discuss

Answer & Solution

Answer: Option B

No explanation is given for this question. Let's Discuss on Board

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Electromagnetic Field Theory MCQ Questions & Answers | ECE