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Communication Systems
Communication Systems
An FM radio receiver which is tuned to a 91.6 MHz broadcast station may receive an image frequency of __________ MHz.
113
102.3
80.9
70.2
113
102.3
80.9
70.2
Answer
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Communication Systems
Commercial Frequency deviation of FM is
65 kHz
80 kHz
75 kHz
70 kHz
65 kHz
80 kHz
75 kHz
70 kHz
Answer
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Communication Systems
In case of low level amplitude modulation system, the amplifiers following the modulated stage must be
Class C amplifiers
Harmonic devices
Linear devices
Non-linear devices
Class C amplifiers
Harmonic devices
Linear devices
Non-linear devices
Answer
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Communication Systems
For a low level AM system, the amplifiers modulated stage must be
Harmonic devices
Class C amplifiers
Linear devices
Non-linear devices
Harmonic devices
Class C amplifiers
Linear devices
Non-linear devices
Answer
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Communication Systems
A three stage telephone switching structure is to have 128 input and 128 output terminals. There are 16 first stage and 16 third stage matrices. To avoid blocking the number of intermediate paths required is
16
15
8
1
16
15
8
1
Answer
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