Question 1

In a radar system,which of the following are frequently detected when there is a large target close by?

Accepted Answer

A) Double range echoes 
B) Second return echoes 
C) Multiple-time around echoes 
D) Duty cycles 
A) Double range echoes 
B) Second return echoes 
C) Multiple-time around echoes 
D) Duty cycles

Question 2

As with waveguides and transmission lines,the characteristic impedances of stripline and microstrip are determined by the type of dielectric and by the ____________.

Accepted Answer

A) cycle of operation 
B) resonant frequency 
C) duration of the transmitted pulse 
D) physical dimensions 
A) cycle of operation 
B) resonant frequency 
C) duration of the transmitted pulse 
D) physical dimensions

Question 3

Doppler radar is a continuous-wave form of radar. Which of the following is it used to determine?

Accepted Answer

A) Speed of moving objects 
B) Velocity of energy propagation 
C) Peak power of a radar pulse 
D) Transmission of microwave energy 
A) Speed of moving objects 
B) Velocity of energy propagation 
C) Peak power of a radar pulse 
D) Transmission of microwave energy

Question 4

There are three methods of coupling energy into or out of a waveguide: probe,loop,and __________.

Accepted Answer

A) aperture 
B) transverse electric 
C) dominant mode 
D) flexible 
A) aperture 
B) transverse electric 
C) dominant mode 
D) flexible

Question 5

What one unique advantage do ridged waveguides provide?

Accepted Answer

A) It consists of a main run with a rectangular waveguide and a circular rotating joint. 
B) It is less expensive to manufacture than a standard rectangular waveguide. 
C) It allows operation at lower frequencies for a given set of outside dimensions. 
D) It has a value greater than the speed of light. 
A) It consists of a main run with a rectangular waveguide and a circular rotating joint. 
B) It is less expensive to manufacture than a standard rectangular waveguide. 
C) It allows operation at lower frequencies for a given set of outside dimensions. 
D) It has a value greater than the speed of light.

In a radar system,which of the following are frequently detected when there is a large target close by?

As with waveguides and transmission lines,the characteristic impedances of stripline and microstrip are determined by the type of dielectric and by the ____________.

Doppler radar is a continuous-wave form of radar. Which of the following is it used to determine?

There are three methods of coupling energy into or out of a waveguide: probe,loop,and __________.

What one unique advantage do ridged waveguides provide?

Fundamental Communications Concept

Amplitude Modulation

Angle Modulation

Communications Circuits

Transmitters

Receivers

Digital Communications Techniques

Digital Modulation and Demodulation

Telephone Networks

Wireless Communications Systems

Computer Communication and the Internet

Transmission Lines

Wave Propagation

Antennas

Fiber Optics

Filters

Exam 15: Waveguides and Radar

In a radar system,which of the following are frequently detected when there is a large target close by?

As with waveguides and transmission lines,the characteristic impedances of stripline and microstrip are determined by the type of dielectric and by the ____________.

Doppler radar is a continuous-wave form of radar. Which of the following is it used to determine?

There are three methods of coupling energy into or out of a waveguide: probe,loop,and __________.

What one unique advantage do ridged waveguides provide?

Fundamental Communications Concept

Amplitude Modulation

Angle Modulation

Communications Circuits

Transmitters

Receivers

Digital Communications Techniques

Digital Modulation and Demodulation

Telephone Networks

Wireless Communications Systems

Computer Communication and the Internet

Transmission Lines

Wave Propagation

Antennas

Fiber Optics

Filters