Related Questions

Frequencies above ___________ kHz are called radio frequencies
A 2
B 10
C 50
D 200
_________ detects the satellite signal relayed from the feed and converts it to an electric current, amplifies and lower its frequency.
A Horn antenna
B LNA
C Satellite receiver
D Satellite dish
Why does the ionosphere of the Earth's atmosphere facilitate radio communication? i. The presence of ozone causes the reflection of radio waves to earth ii. Radio waves have a very long wavelength
A i only
B ii only
C both i & ii
D neither i nor ii
The signal voltage induced in the aerial of a radio receiver is of the order of ___________
A mV
B µV
C V
D None of the above
When measuring the characteristics of a small-signal amplifier, say for a radio receiver, one might be concerned with its "Noise..."?
A Fundamental
B Fall
C Force
D Figure
The lower and upper cut off frequencies are also called ___________ frequencies
A Sideband
B Resonant
C Half-resonant
D Half-power
After distributing the chocolates equally among 25 kids, 8 chocolates remain . Had the number of children been 28 , 22 chocolates would have been left after equally distributing. Find the total number of chocolates?
A 315
B 358
C 368
D 322
A recorder is said to have good frequency response when the sensitivity of the system is _________ for all frequencies present in the signal.
A Unity
B Zero
C Infinity
D Constant
A band-stop filter passes frequencies between its lower and upper critical frequencies and rejects all others.
A True
B False
Eight people are planning to share equally the cost of a rental car . If one person withdraws from the arrangement and the others share equally the entire cost of the car ,then the share of each of the remaining persons will be increased by -
A 1/7
B 1/85
C 7/8
D 1/2

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