Explore topic-wise MCQs in Analog Communications.

This section includes 16 Mcqs, each offering curated multiple-choice questions to sharpen your Analog Communications knowledge and support exam preparation. Choose a topic below to get started.

1.

The end-to-end length of a half wave dipole antenna is actually ________

A. slightly shorter than a half wavelength
B. slightly longer than a half wavelength
C. half lambda wavelength
D. lambda wavelength
Answer» B. slightly longer than a half wavelength
Discussion
2.

The radiation of energy from an antenna can be seen in the ________

A. standing wave around antenna
B. radiation resistance of the antenna
C. reflected resistance of the antenna
D. I2R loss of the antenna
Answer» C. reflected resistance of the antenna
Discussion
3.

AM waves is represented by Et cos⁡ ωc t. What does Et denotes?

A. amplitude of modulated wave
B. amplitude of carrier signal
C. amplitude of modulating signal
D. amplitude of message signal
Answer» B. amplitude of carrier signal
Discussion
4.

An antenna’s beamwidth is measured ________

A. from +90° to -90°
B. between half power points
C. between the minor side lobes
D. between the major side lobes
Answer» C. between the minor side lobes
Discussion
5.

“Ground Effects” in antenna effects ________

A. antenna’s radiation
B. antenna’s gain
C. antenna’s SWR
D. antenna’s power
Answer» B. antenna’s gain
Discussion
6.

A non-resonant antenna will ________

A. not transmit
B. not receive
C. cause SWR on the feed cable
D. transmit and receive the signal at the same time
Answer» D. transmit and receive the signal at the same time
Discussion
7.

THE_RADIATION_OF_ENERGY_FROM_AN_ANTENNA_CAN_BE_SEEN_IN_THE_________?$

A. standing wave around antenna
B. radiation resistance of the antenna
C. reflected resistance of the antenna
D. I2R loss of the antenna
Answer» C. reflected resistance of the antenna
Discussion
8.

The_end-to-end_length_of_a_half_wave_dipole_antenna_is_actually_________$

A. slightly shorter than a half wavelength
B. slightly longer than a half wavelength
C. half lambda wavelength
D. lambda wavelength
Answer» B. slightly longer than a half wavelength
Discussion
9.

AM waves is represented by Et cos⁡ ωc t. What does Et denotes?#

A. amplitude of modulated wave
B. amplitude of carrier signal
C. amplitude of modulating signal
D. amplitude of message signal
Answer» B. amplitude of carrier signal
Discussion
10.

What is the front to back ratio of a half wave dipole antenna?

A. 0 dB
B. 10 dB
C. 100 dB
D. 50 dB
Answer» B. 10 dB
Discussion
11.

An antenna’s beamwidth is measured ________$

A. from +90° to -90°
B. between half power points
C. between the minor side lobes
D. between the major side lobes
Answer» C. between the minor side lobes
Discussion
12.

“Ground Effects” in antenna effects ________$

A. antenna’s radiation
B. antenna’s gain
C. antenna’s SWR
D. antenna’s power
Answer» B. antenna‚Äö√Ñ√∂‚àö√ë‚àö¬•s gain
Discussion
13.

A 1-MHz monopole antenna must be ________

A. mounted vertically
B. mounted horizontally
C. atleast half lambda wavelength long
D. atleast lambda wavelength long
Answer» B. mounted horizontally
Discussion
14.

The typical antenna in an AM radio is a ________

A. dipole
B. helical
C. ferrite “loop-stick”
D. loop dipole
Answer» D. loop dipole
Discussion
15.

A non-resonant antenna will________

A. not transmit
B. not receive
C. cause SWR on the feed cable
D. transmit and receive the signal at the same time
Answer» D. transmit and receive the signal at the same time
Discussion
16.

As the length of a long-wire antenna is increased ________

A. the number of lobes also increase
B. the number of lobes decrease
C. efficiency increase
D. the number of nodes decrease
Answer» B. the number of lobes decrease
Discussion