Antenna and Microwave Engineering MCQs with answers Page - 3

Here, you will find a collection of MCQ questions on Antenna and Microwave Engineering. Go through these questions to enhance your preparation for upcoming examinations and interviews.

To check the correct answer, simply click the View Answer button provided for each question.

Have your own questions to contribute? Click the button below to share your MCQs with others!

+ Add Question

A

Admin • 802.91K Points
Coach

Q. Beamwidth and directivity are both measures of the focusing ability of an antenna.

  • (A) true
  • (B) false
  • (C) ---
  • (D) ---

A

Admin • 802.91K Points
Coach

Q. If the beam width of an antenna in two orthogonal planes are 300 and 600. Then the directivity of the antenna is:

  • (A) 24
  • (B) 18
  • (C) 36
  • (D) 12

A

Admin • 802.91K Points
Coach

Q. If the power input to an antenna is 100 mW and if the radiated power is measured to be 90 mW, then the efficiency of the antenna is:

  • (A) 75 %
  • (B) 80 %
  • (C) 90 %
  • (D) insufficient data

A

Admin • 802.91K Points
Coach

Q. If an antenna has a directivity of 16 and radiation efficiency of 0.9, then the gain of the antenna is:

  • (A) 16.2
  • (B) 14.8
  • (C) 12.5
  • (D) 19.3

A

Admin • 802.91K Points
Coach

Q. Gain of an antenna is always greater than the directivity of the antenna.

  • (A) true
  • (B) false
  • (C) ---
  • (D) ---

A

Admin • 802.91K Points
Coach

Q. A rectangular horn antenna has an aperture area of 3λ × 2λ. Then the maximum directivity that can be achieved by this rectangular horn antenna is:

  • (A) 24 db
  • (B) 4 db
  • (C) 19 db
  • (D) insufficient data

A

Admin • 802.91K Points
Coach

Q. A rectangular horn antenna has an aperture area of 3λ × 2λ. If the aperture efficiency of an antenna is 90%, then the directivity of the antenna is:

  • (A) 19 db
  • (B) 17.1 db
  • (C) 13 db
  • (D) 21.1 db

A

Admin • 802.91K Points
Coach

Q. A resistor is operated at a temperature of 300 K, with a system bandwidth of 1 MHz then the noise power produced by the resistor is:

  • (A) 3.13×10-23 watts
  • (B) 4.14×10-15 watts
  • (C) 6.14×10-15 watts
  • (D) none of the mentioned

A

Admin • 802.91K Points
Coach

Q. With an increase in operating frequency, the background noise temperature:

  • (A) increases
  • (B) decreases
  • (C) remains constant
  • (D) remains unaffected

A

Admin • 802.91K Points
Coach

Q. The noise temperature of an antenna is given by the expression:

  • (A) radtb + (1-rad) tp
  • (B) (1-rad) tp
  • (C) radtb
  • (D) none of the mentioned

Add MCQ in this Category

If you want to share an MCQ question in this category, it's a great idea! It will be helpful for many other students using this website.

Share Your MCQ

Browse Categories

Click on category to learn MCQs of that category.