Question 1

The basic difference between the block diagram of an AM receiver and FM receiver is that

Accepted Answer

A)  an FM receiver must use automatic frequency control 
B)  an FM receiver does not use the superheterodyne design 
C)  an FM receiver uses a limiter and discriminator instead of a diode detector 
D)  an FM receiver cannot ever use automatic gain control 
A)  an FM receiver must use automatic frequency control 
B)  an FM receiver does not use the superheterodyne design 
C)  an FM receiver uses a limiter and discriminator instead of a diode detector 
D)  an FM receiver cannot ever use automatic gain control

Question 2

Which of the following does provide amplitude limiting?

Accepted Answer

A)  PLL 
B)  Foster-Seely discriminator 
C)  ratio detector 
D)  all of the above 
A)  PLL 
B)  Foster-Seely discriminator 
C)  ratio detector 
D)  all of the above

Question 3

Which of the following FM discriminators produces excessive distortion due to its nonlinear roll-off characteristics?

Accepted Answer

A)  quadrature detector 
B)  PLL detector 
C)  ratio detector 
D)  Foster-Seely detector 
E)  slope detector 
A)  quadrature detector 
B)  PLL detector 
C)  ratio detector 
D)  Foster-Seely detector 
E)  slope detector

Question 4

The FM detector design that does not require intricate coil adjustments to be tuned is the:

Accepted Answer

A)  Foster-Seely detector 
B)  PLL detector 
C)  quadrature detector 
D)  slope detector 
E)  ratio detector 
A)  Foster-Seely detector 
B)  PLL detector 
C)  quadrature detector 
D)  slope detector 
E)  ratio detector

Question 5

An example of an FM stereo demodulator integrated circuit is the:

Accepted Answer

A)  560. 
B)  3090. 
C)  3089. 
D)  565. 
A)  560. 
B)  3090. 
C)  3089. 
D)  565.

Question 6

The square-law FET characteristics

Accepted Answer

A)  reduces the shot noise produced by the FET 
B)  minimize the cross-modulation distortion in an FM receiver 
C)  allow for narrower bandwidth in the tuned amplifier that it is used in 
D)  allow for greater sensitivity in an FM receiver 
A)  reduces the shot noise produced by the FET 
B)  minimize the cross-modulation distortion in an FM receiver 
C)  allow for narrower bandwidth in the tuned amplifier that it is used in 
D)  allow for greater sensitivity in an FM receiver

Question 7

The expected output frequency of a mixer circuit with an input frequency of 92.1 MHz and a local oscillator frequency of 102.8MHz is:

Accepted Answer

A)  194.9 MHz 
B)  11.7 MHz 
C)  10.1 MHz 
D)  9.7 MHz 
E)  none of the above 
A)  194.9 MHz 
B)  11.7 MHz 
C)  10.1 MHz 
D)  9.7 MHz 
E)  none of the above

The basic difference between the block diagram of an AM receiver and FM receiver is that

Which of the following does provide amplitude limiting?

Which of the following FM discriminators produces excessive distortion due to its nonlinear roll-off characteristics?

The FM detector design that does not require intricate coil adjustments to be tuned is the:

An example of an FM stereo demodulator integrated circuit is the:

The square-law FET characteristics

The expected output frequency of a mixer circuit with an input frequency of 92.1 MHz and a local oscillator frequency of 102.8MHz is:

Introductory Topics

Amplitude Modulation: Transmission

Amplitude Modulation: Reception

Single-Sideband Communications

Frequency Modulation: Transmission

Communications Techniques

Digital Communications: Coding Techniques

Wired Digital Communications

Wireless Digital Communications

Network Communications

Transmission Lines

Wave Propagation

Antennas

Waveguides and Radar

Microwaves and Lasers

Television

Fiber Optics

Filters

Exam 6: Frequency Modulation: Reception

The basic difference between the block diagram of an AM receiver and FM receiver is that

Which of the following does provide amplitude limiting?

Which of the following FM discriminators produces excessive distortion due to its nonlinear roll-off characteristics?

The FM detector design that does not require intricate coil adjustments to be tuned is the:

An example of an FM stereo demodulator integrated circuit is the:

The square-law FET characteristics

The expected output frequency of a mixer circuit with an input frequency of 92.1 MHz and a local oscillator frequency of 102.8MHz is:

Introductory Topics

Amplitude Modulation: Transmission

Amplitude Modulation: Reception

Single-Sideband Communications

Frequency Modulation: Transmission

Communications Techniques

Digital Communications: Coding Techniques

Wired Digital Communications

Wireless Digital Communications

Network Communications

Transmission Lines

Wave Propagation

Antennas

Waveguides and Radar

Microwaves and Lasers

Television

Fiber Optics

Filters