Explore topic-wise MCQs in Microwave Engineering.

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

1.

If the field strength at receiving antenna is 1 µV/m, and the effective aperture area is 0.4 m2 and the intrinsic impedance of the medium is 377 Ω, then the power received by the antenna is:

A. 1.06 pW
B. 1.06 fW
C. 2 µW
D. None of the mentioned
Answer» C. 2 µW
Discussion
2.

Considering distance as a parameter, two types of field zones can be defined around an antenna.

A. True
B. False
Answer» B. False
Discussion
3.

A source with a unidirectional cosine squared radiation intensity pattern is given by UMcos2 (θ). The directivity of the given source is:

A. 6
B. 8
C. 2
D. 7
Answer» B. 8
Discussion
4.

A source has a radiation intensity pattern given by U=UM sin θ. The directivity of the source with this power pattern is:

A. 1
B. 1.27
C. 2.4
D. 3.4
Answer» C. 2.4
Discussion
5.

A source has a cosine radiation-intensity pattern given by U=UM cos (θ). The directivity of this source is:

A. 2
B. 4
C. 6
D. 8
Answer» C. 6
Discussion
6.

The expression for pointing vector of an isotropic point source at a distance ‘r’ from the source is given by:

A. P/ 4πR2
B. P/4π
C. P/ 4πR
D. P×4πR2
Answer» B. P/4π
Discussion
7.

CONSIDERING_DISTANCE_AS_A_PARAMETER,_TWO_TYPES_OF_FIELD_ZONES_CAN_BE_DEFINED_AROUND_AN_ANTENNA.?$

A. True
B. False
Answer» B. False
Discussion
8.

If_the_field_strength_at_receiving_antenna_is_1_µV/m,_and_the_effective_aperture_area_is_0.4_m2_and_the_intrinsic_impedance_of_the_medium_is_377_Ω,_then_the_power_received_by_the_antenna_is:$#

A. 1.06 pW
B. 1.06 fW
C. 2 µW
D. None of the mentioned
Answer» C. 2 ¬¨¬®¬¨¬µW
Discussion
9.

A source with a unidirectional cosine squared radiation intensity pattern is given by UMcos2 (θ). The directivity of the given source is?#

A. 6
B. 8
C. 2
D. 7
Answer» B. 8
Discussion
10.

A source has a sine squared radiation intensity power pattern. The directivity of the given source is:

A. 1.5
B. 3
C. 2.5
D. 3.5
Answer» B. 3
Discussion
11.

A source has a radiation intensity pattern given by U=UM sin θ. The directivity of the source with this power pattern is:$

A. 1
B. 1.27
C. 2.4
D. 3.4
Answer» C. 2.4
Discussion
12.

A source has a cosine power pattern that is bidirectional. Given that the directivity of a unidirectional source with cosine power pattern has a directivity of 4, then the directivity of the unidirectional source is:

A. 1
B. 2
C. 4
D. 8
Answer» C. 4
Discussion
13.

A source has a cosine radiation-intensity pattern given by U=UM cos (θ). The directivity of this source is:$

A. 2
B. 4
C. 6
D. 8
Answer» C. 6
Discussion
14.

The expression for pointing vector of an isotropic point source at a distance ‘r’ from the source is given by:$

A. P/ 4πR<sup>2</sup>
B. P/4π
C. P/ 4πR
D. P×4πR<sup>2</sup>
Answer» B. P/4‚âà√¨‚àö√ë
Discussion
15.

Antennas that radiate energy only in a specified are called anisotropic antennas.

A. True
B. False
Answer» B. False
Discussion
16.

An antenna source that radiates energy uniformly in all the directions is called:

A. Isotropic source
B. Anisotropic source
C. Point source
D. None of the mentioned
Answer» B. Anisotropic source
Discussion