AM Waves Generation MCQs : This section focuses on the "AM Waves Generation". These Multiple Choice Questions (MCQs) should be practiced to improve the AM Waves Generation skills required for various interviews (campus interview, walk-in interview, company interview), placement, entrance exam and other competitive examinations.
Question 1
A wave is modulated by two sin waves having modulation indices of 0.3 and 0.5. Find the total modulation index?
A. 0.1
B. 0.7
C. 0.58
D. 0.35
Question 2
Approximate range of a cordless telephone is ________
A. 900m
B. 100m
C. 1000m
D. 475m
Question 3
Carrier wave carries information.
A. True
B. False
Question 4
For 100% amplitude modulation, the power in upper sideband when carrier power is to be 100W?
A. 100W
B. 75W
C. 25W
D. 50W
Question 5
For low level amplitude modulation, amplifier must be ________
A. Class C amplifier
B. Class B amplifier
C. Class D amplifier
D. class A amplifier
Question 6
Modem is considered as high speed if data rate is ________
A. 10000
B. 20000
C. 5000
D. 30000
Question 7
Scanning always takes place from ________
A. right to left
B. left to right
C. left to right for odd fields and right to left for even fields
D. left to right for even fields and right to left for odd fields
Question 8
What can we do to eliminate distortion in the picture?
A. use a longer transmission line
B. change the antenna orientation
C. use a short transmission line
D. connect a booster
Question 9
What is the disadvantage of FM over AM?
A. high modulating power is needed
B. requires high output power
C. large bandwidth required
D. high noise is produced
Question 10
Which of the following devices is used to generate AM waves?
A. Square-law modulator
B. Reactance modulator
C. Transmitter
D. Transducer