14th
Feb
Electromagnetic Fields MCQ

Electromagnetic Fields MCQ

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  • 14th Feb, 2023
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Take Electromagnetic Fields MCQ Test & Online Quiz to Test Your Knowledge

Practice here the best Electromagnetic Fields MCQ Questions that check your basic knowledge of Electromagnetic Fields. This Electromagnetic Fields MCQ Test contains 20+ Multiple Choice Questions. You have to select the right answer to the question. apart from this, you can also download here Electromagnetic Fields Mcq PDF, completely free. 

Electromagnetic Fields MCQ

1) Which of the following is the example of spherical system?

  • A. Charge in box
  • B.Charge in dielectric
  • C.Charge in space
  • D.Uncharged system

2) Which of the following is the radiation pattern of a parabola antenna?

  • A. Figure of directional
  • B.Omnidirectional
  • C.Highly directional
  • D.None of the above

3) What is the main disadvantage of the two-hole directional coupler?

  • A. Narrow bandwidth
  • B.Poor directivity
  • C.High standing wave ratio
  • D.All of the above

4) The electric charge is stored in....... In a capacitor.

  • A. metal plates
  • B.dielectric
  • C.Both A & B
  • D.None of the above

5) Which material has the highest value of dielectric constant?

  • A. Glass
  • B.Oil
  • C.Vacuum
  • D.Ceramics

6) Pickout the incorrect statement?

  • A. The leakage resistance of ceramic capacitors is generally high
  • B.The stored energy in a capacitor increases with applied voltage
  • C.A wire cable has distributed capacitance between the conductors
  • D.The stored energy in a capacitor decreases with reduction in value of capacitance

7) A capacitor consists of two -

  • A. insulators only
  • B.conductors only
  • C.conductors separated by an insulator
  • D.insulators separated by a conductor

8) What is the unit of capacitance?

  • A. ohm
  • B.farad
  • C.henry
  • D.None of the above

9) Which of the following capacitors are mainly used for radio frequency tuning?

  • A. Air
  • B.Mica
  • C.Paper
  • D.Electrolytic

10) The Stoke’s theorem uses ................. operation?

  • A. Curl
  • B.Gradient
  • C.Laplacian
  • D.Divergence

11) The Green’s theorem can be related to ..............

  • A. Euler’s theorem
  • B.Leibnitz’s theorem
  • C.Stoke’s theorem
  • D.None of the above

12) Which of the following quantity is unit of Coulomb?

  • A. Force
  • B.Charge
  • C.Pressure
  • D.Permittivity

13) The electric field will be ........... for a test charge placed at infinity?

  • A. +∞
  • B.-∞
  • C.zero
  • D.None of the above

14) The Gaussian surface is -

  • A. Tangential
  • B.Real boundary
  • C.Imaginary surface
  • D.None of the above

15) Gauss law cannot be used to find

  • A. Charge
  • B.Permittivity
  • C.Electric field intensity
  • D.None of the above

16) For which of the following purpose Loop antenna is commonly used?

  • A. Radar
  • B.Direction finding
  • C.Communication
  • D.None of the above

17) Parabolic & lens antenna are commonly used in-

  • A. Medium frequency
  • B.Microwave frequency
  • C.Low frequency
  • D.High frequency

18) What is the radiation pattern of loop antenna?

  • A. Circle
  • B.Limacon
  • C.Cardoid
  • D.Both B & C

19) A capacitor stores 0.24 coulombs at 10 volts. Find the Its capacitance?

  • A. 0.8 F
  • B.0.6 F
  • C.0.024 F
  • D.None of the above

20) A dielectric material must be -

  • A. insulator
  • B.resistor
  • C.Electric field
  • D.None of the above

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