Question 1

The direction of rotation of a CD is

Accepted Answer

A) clockwise 
B) anticlockwise 
C) clockwise or anticlockwise depending on frequency of data stored 
D) mostly anticlockwise but some times clockwise 
A) clockwise 
B) anticlockwise 
C) clockwise or anticlockwise depending on frequency of data stored 
D) mostly anticlockwise but some times clockwise

Question 2

The characteristic impedance of a twin wire feeder used for TV signals is about

Accepted Answer

A) 1000 ohm 
B) 500 ohm 
C) 300 ohm 
D) 100 ohm 
A) 1000 ohm 
B) 500 ohm 
C) 300 ohm 
D) 100 ohm

Question 3

SSB can be generated by

Accepted Answer

A) filter method 
B) phase cancellation method 
C) good attenuation characteristics 
D) all of the above 
A) filter method 
B) phase cancellation method 
C) good attenuation characteristics 
D) all of the above

Question 4

One of the advantages of base modulation over collector modulation of a transistor class C amplifier is

Accepted Answer

A) improved efficiency 
B) better linearity 
C) high power output per transistor 
D) the lower modulating power requirement 
A) improved efficiency 
B) better linearity 
C) high power output per transistor 
D) the lower modulating power requirement

Question 5

In practical commercial FM system, channel bandwidth is

Accepted Answer

A) 150 khz 
B) 100 khz 
C) 88 mhz 
D) 108 mhz 
A) 150 khz 
B) 100 khz 
C) 88 mhz 
D) 108 mhz

The direction of rotation of a CD is

The characteristic impedance of a twin wire feeder used for TV signals is about

SSB can be generated by

One of the advantages of base modulation over collector modulation of a transistor class C amplifier is

In practical commercial FM system, channel bandwidth is

Communication and Language

Communication and Radio Broadcasting

Electronics and Telecommunications

Filters

Exam 3: Radio Transmission and Modulation Techniques

The direction of rotation of a CD is

The characteristic impedance of a twin wire feeder used for TV signals is about

SSB can be generated by

One of the advantages of base modulation over collector modulation of a transistor class C amplifier is

In practical commercial FM system, channel bandwidth is

Communication and Language

Communication and Radio Broadcasting

Electronics and Telecommunications

Filters