First communication satellites used frequencies of
A) 6 GHz for uplink
B) 3 GHz for uplink
C) 6 GHz for downlink
D) 5 GHz for downlink
Correct Answer:
Verified
Q7: In frequency modulation, amplitude of modulated wave
Q8: High quality music only needs frequencies up
Q9: Binary system has base
A)10
B)11
C)1
D)2
Q10: In FM, frequency of modulated wave varies
Q11: Unwanted signal that distorts a transmitted signal
Q13: A wave of frequency 1 GHz has
Q14: Semiconductors have electron number density of order{{}}
A)10
Q15: A straight line symbol shows the
A)fuse
B)diode
C)connecting lead
D)switch
Q16: Rate of flow of electric charge is
A)electric
Q17: instrument which transfers energy to electric charges
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