Antenna and Microwave Engineering MCQs with answers Page - 4

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A

Admin • 802.91K Points
Coach

Q. Low is the G/T ratio of an antenna, higher is its efficiency.

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

A

Admin • 802.91K Points
Coach

Q. has a constant power spectral density.

  • (A) white noise
  • (B) gaussian noise
  • (C) thermal noise
  • (D) shot noise

A

Admin • 802.91K Points
Coach

Q. Slotted line is a transmission line configuration that allows the sampling of:

  • (A) electric field amplitude of a standing wave on a terminated line
  • (B) magnetic field amplitude of a standing wave on a terminated line
  • (C) voltage used for excitation
  • (D) current that is generated by the source

A

Admin • 802.91K Points
Coach

Q. If the standing wave ratio for a transmission line is 1.4, then the reflection coefficient for the line is:

  • (A) 0.16667
  • (B) 1.6667
  • (C) 0.01667
  • (D) 0.96

A

Admin • 802.91K Points
Coach

Q. If the reflection coefficient of a transmission line is 0.4, then the standing wave ratio is:

  • (A) 1.3333
  • (B) 2.3333
  • (C) 0.4
  • (D) 0.6

A

Admin • 802.91K Points
Coach

Q. In the expression for phase of the reflection coefficient, Lmin stands for :

  • (A) distance between load and first voltage minimum
  • (B) distance between load and first voltage maximum
  • (C) distance between consecutive minimas
  • (D) distance between a minima and immediate maxima

A

Admin • 802.91K Points
Coach

Q. If the normalized load impedance of a transmission line is 2, then the reflection co- efficient is:

  • (A) 0.33334
  • (B) 1.33334
  • (C) 0
  • (D) 1

A

Admin • 802.91K Points
Coach

Q. Link budget consists of calculation of

  • (A) useful signal power
  • (B) interfering noise power
  • (C) useful signal & interfering noise power
  • (D) none of the mentioned

A

Admin • 802.91K Points
Coach

Q. Which is the primary cost for degradation of error performance?

  • (A) loss in signal to noise ratio
  • (B) signal distortion
  • (C) signal distortion & loss in signal to noise ratio
  • (D) none of the mentioned

A

Admin • 802.91K Points
Coach

Q. Which factor adds phase noise to the signal?

  • (A) jitter
  • (B) phase fluctuations
  • (C) jitter & phase fluctuations
  • (D) none of the mentioned

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