Frequency shift keying is used mostly in

Electronics and Communication Engineering (ECE) : Communication Systems - Quiz(MCQ)

telegraphy

telephony

radio transmission

satellite communication

Correct Answer : Option (A) : telegraphy

Explanation : Frequency shift keying (FSK) is a system of frequency modulation used in telegraphy.

Recently Updated in Communication Systems Questions

In TV scanning sequence of lines is

right to left

left to right

left to right for odd fields and right to left for even field

left to right for even fields and right to left for odd field

Correct Answer : left to right

Which of the following terms are applicable to troposcatter propagation?

SIOs

Fading

Faradays rotation

Atmospheric storms

Correct Answer : Fading

Explanation : Tropospheric scatter propagation is subject to two types of fading called Rayleigh fading (due to multipath propagation) and fading due to variations in atmospheric conditions along the propagation path.

A + 1.9 lens has a focal length of 25 mm. The diameter of lens is about

1.3 mm

130 mm

13 mm

None of the above

Correct Answer : 13 mm

ECE MCQ's

Satellite Communication

Communication Systems

Microwave Communication

Automatic Control Systems

Materials and Components