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Free gk questions Online Test - MeritNotes
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No. of Questions :10
Remaining Time :
1. The output of the TV camera and synchronising pulses are modulated on
(a)
ultra high frequency carrier wave
(b)
high frequency carrier wave
(c)
super high frequency carrier wave
(d)
voice frequency carrier wave
2. When the saw tooth potential is applied to the horizontal plates, it is called
(a)
blanking pulse
(b)
timer pulse
(c)
line synchronising pulse
(d)
frame synchronising pulse
3. The horizontal scanning frequency is defined as the number of
(a)
lines scanned per second
(b)
frames scanned per second
(c)
lines scanned per minute
(d)
frames scanned per minute
4. The difference between oscillator frequency and radio frequency gives
(a)
super high frequency
(b)
ultra high frequency
(c)
voice frequency
(d)
intermediate frequency
5. The transmitter receiver switching arrangement is called
(a)
triplexer
(b)
multiplexer
(c)
duplexer
(d)
none of the above
6. The process of extracting the audio signal from high frequency carrier or intermediate frequency is referred to as
(a)
audio selection
(b)
demodulation
(c)
modulation
(d)
none of the above
7. A thin transparent rod, usually made of glass or plastic, through which light can propagate is
(a)
optical fibre
(b)
twisted pair cable
(c)
multiconductor flat cable
(d)
coaxial cable
8. Pick out the simplest and lowest cost cable.
(a)
coaxial cable
(b)
multiconductor flat cable
(c)
twisted pair cable
(d)
both b and c
9. An electronic system for transmitting graphical information by wire or radio is
(a)
e-mail
(b)
fax
(c)
internet
(d)
none of the above
10. The angular velocity of geostationary satellites is
(a)
equal to zero
(b)
same as that of the earth
(c)
lesser than that of the earth
(d)
greater than that of the earth
