Question 1

The antennas which offer high operational bandwidth and the antenna parameters are maintained over a wide range of antennas are called:

Accepted Answer

A) wide band antennas 
B) array antennas 
C) parabolic antennas 
D) none of the mentioned 
A) wide band antennas 
B) array antennas 
C) parabolic antennas 
D) none of the mentioned A

Question 2

Reflector antennas are widely used to modify radiation patterns of radiating elements.

Accepted Answer

A) True 
 B)False  True

Question 3

The terminal impedance of a dipole antenna is 710 ?. The terminal impedance of the slot antenna given the intrinsic impedance of air is 377 ? is:

Accepted Answer

A) 100 ? 
B) 50 ? 
C) 25 ? 
D) none of the mentioned 
A) 100 ? 
B) 50 ? 
C) 25 ? 
D) none of the mentioned B

Question 4

Which of the following is false regarding Antenna array?

Accepted Answer

A) directivity increases 
B) directivity decreases 
C) beam width decreases 
D) gain increases 
A) directivity increases 
B) directivity decreases 
C) beam width decreases 
D) gain increases

Question 5

Power radiated from an antenna per unit solid angle is called radiation intensity.

Accepted Answer

A) True 
 B)False

Question 6

__________antennas have gain less than reflector antennas but have more lenient tolerance on surfaces.

Accepted Answer

A) helical antennas 
B) lens antennas 
C) array antennas 
D) slot antennas 
A) helical antennas 
B) lens antennas 
C) array antennas 
D) slot antennas

Question 7

The antenna in which location of the feed determines the direction of the lobe are:

Accepted Answer

A) wire antenna 
B) loop antenna 
C) helical antenna 
D) horn antenna 
A) wire antenna 
B) loop antenna 
C) helical antenna 
D) horn antenna

Question 8

What is the impedance of the folded dipole antenna?

Accepted Answer

A) 50? 
B) 100? 
C) 300? 
D) 20? 
A) 50? 
B) 100? 
C) 300? 
D) 20?

Question 9

Antennas are bidirectional devices.

Accepted Answer

A) True 
 B)False

Question 10

Electrical size of antenna is increased by which of the following?

Accepted Answer

A) antenna array 
B) decreasing the coverage area 
C) increasing the coverage area 
D) using a single antenna 
A) antenna array 
B) decreasing the coverage area 
C) increasing the coverage area 
D) using a single antenna

Question 11

High directivity required in RADAR communication is satisfied using this type of antennas:

Accepted Answer

A) wide band antennas 
B) antenna arrays 
C) slot antennas 
D) patch antennas 
A) wide band antennas 
B) antenna arrays 
C) slot antennas 
D) patch antennas

Question 12

Which of the following is false about the single antenna for long distance communication?

Accepted Answer

A) enlarging may create side lobes 
B) no side lobes 
C) high directivity is required 
D) high gain is required 
A) enlarging may create side lobes 
B) no side lobes 
C) high directivity is required 
D) high gain is required

Question 13

What is the beam width for a half wave dipole antenna?

Accepted Answer

A) 90° 
B) 180° 
C) 50° 
D) 250° 
A) 90° 
B) 180° 
C) 50° 
D) 250°

Question 14

Antenna that does not belong to the horn antenna family among the following are:

Accepted Answer

A) pyramidal horn 
B) conical horn 
C) bi-conical horn 
D) none of the mentioned 
A) pyramidal horn 
B) conical horn 
C) bi-conical horn 
D) none of the mentioned

Question 15

What does the beam width of an antenna tell us?

Accepted Answer

A) signal strength 
B) signal power 
C) directivity 
D) degradation 
A) signal strength 
B) signal power 
C) directivity 
D) degradation

Question 16

What is the power radiated by the antenna with gain called as?

Accepted Answer

A) critical power 
B) transverse power 
C) effective radiated power 
D) transmitted power 
A) critical power 
B) transverse power 
C) effective radiated power 
D) transmitted power

Question 17

Which of the following antennas produce a vertical radiation pattern?

Accepted Answer

A) dipole antenna 
B) yagi antenna 
C) marconi antenna 
D) hertz antenna 
A) dipole antenna 
B) yagi antenna 
C) marconi antenna 
D) hertz antenna

Question 18

For long distance communication, which of the property is mainly necessary for the antenna?

Accepted Answer

A) high directivity 
B) low directivity 
C) low gain 
D) broad beam width 
A) high directivity 
B) low directivity 
C) low gain 
D) broad beam width

Question 19

What is the radiation pattern of an isotropic radiator?

Accepted Answer

A) doughnut 
B) sphere 
C) hemisphere 
D) circular 
A) doughnut 
B) sphere 
C) hemisphere 
D) circular

Question 20

Lens antennas are classified into two types. One being fast antenna, the other one is:

Accepted Answer

A) slow antenna 
B) delay antenna 
C) dynamic antenna 
D) none of the mentioned 
A) slow antenna 
B) delay antenna 
C) dynamic antenna 
D) none of the mentioned

The antennas which offer high operational bandwidth and the antenna parameters are maintained over a wide range of antennas are called:

Reflector antennas are widely used to modify radiation patterns of radiating elements.

The terminal impedance of a dipole antenna is 710 ?. The terminal impedance of the slot antenna given the intrinsic impedance of air is 377 ? is:

Which of the following is false regarding Antenna array?

Power radiated from an antenna per unit solid angle is called radiation intensity.

__________antennas have gain less than reflector antennas but have more lenient tolerance on surfaces.

The antenna in which location of the feed determines the direction of the lobe are:

What is the impedance of the folded dipole antenna?

Antennas are bidirectional devices.

Electrical size of antenna is increased by which of the following?

High directivity required in RADAR communication is satisfied using this type of antennas:

Which of the following is false about the single antenna for long distance communication?

What is the beam width for a half wave dipole antenna?

Antenna that does not belong to the horn antenna family among the following are:

What does the beam width of an antenna tell us?

What is the power radiated by the antenna with gain called as?

Which of the following antennas produce a vertical radiation pattern?

For long distance communication, which of the property is mainly necessary for the antenna?

What is the radiation pattern of an isotropic radiator?

Lens antennas are classified into two types. One being fast antenna, the other one is:

Antennas and Frequency Multipliers

Antenna and Transmission Line

Antenna Arrays, Power Amplifiers, and Gunn Diodes

Microwave Devices and Their Operation: Gunn Diodes, Impatt Diodes, Klystron Tubes

RF Devices and Circuits

Microwave Network Noise Figure, Oscillator Circuits, and Negative Resistance Devices

Filters

Exam 3: Antenna Fundamentals and Characteristics

The antennas which offer high operational bandwidth and the antenna parameters are maintained over a wide range of antennas are called:

Reflector antennas are widely used to modify radiation patterns of radiating elements.

The terminal impedance of a dipole antenna is 710 ?. The terminal impedance of the slot antenna given the intrinsic impedance of air is 377 ? is:

Which of the following is false regarding Antenna array?

Power radiated from an antenna per unit solid angle is called radiation intensity.

__________antennas have gain less than reflector antennas but have more lenient tolerance on surfaces.

The antenna in which location of the feed determines the direction of the lobe are:

What is the impedance of the folded dipole antenna?

Antennas are bidirectional devices.

Electrical size of antenna is increased by which of the following?

High directivity required in RADAR communication is satisfied using this type of antennas:

Which of the following is false about the single antenna for long distance communication?

What is the beam width for a half wave dipole antenna?

Antenna that does not belong to the horn antenna family among the following are:

What does the beam width of an antenna tell us?

What is the power radiated by the antenna with gain called as?

Which of the following antennas produce a vertical radiation pattern?

For long distance communication, which of the property is mainly necessary for the antenna?

What is the radiation pattern of an isotropic radiator?

Lens antennas are classified into two types. One being fast antenna, the other one is:

Antennas and Frequency Multipliers

Antenna and Transmission Line

Antenna Arrays, Power Amplifiers, and Gunn Diodes

Microwave Devices and Their Operation: Gunn Diodes, Impatt Diodes, Klystron Tubes

RF Devices and Circuits

Microwave Network Noise Figure, Oscillator Circuits, and Negative Resistance Devices

Filters