Radio: Telecommunication Engineering Test! Trivia Questions Quiz
.
- 1.The maximum power in AM,when modulation index is
- A.
0
- B.
0.5
- C.
0.7
- D.
1
- 2.AFC is
- A.
Audio frequency control
- B.
Automatic frequency control
- C.
Amplitude frequency control
- D.
None of these
- 3.Which one of the following is the type of ‘super heterodyning’?
- A.
Radio transmitter
- B.
TV
- C.
Radio receiver
- D.
Radar
- 4.An earth station transmitter consists of
- A.
RF to IF down converter
- B.
IF to RF converter
- C.
Either (a)&(b)
- D.
None of these
- 5.An earth station receiver consists of
- A.
RF to IF down converter
- B.
IFto RF converter
- C.
Either (a)&(b)
- D.
None of these
- 6.In optical communication, carrier is
- A.
Electromagnetic waves in optical frequency
- B.
Electromagnetic waves in maximum frequency
- C.
Electromagnetic waves in minimum frequency
- D.
None of these
- 7.Optical detector is
- A.
diode
- B.
PIN photo diode
- C.
Transistor
- D.
none of these
- 8.Video signals in TV are
- A.
Amplitude modulated
- B.
Phase modulated
- C.
Frequency modulated
- D.
None of these
- 9.In FM modulation ,when the modulation index increases, transmitted power is
- A.
Constant
- B.
Increased
- C.
Decreased
- D.
None of these
- 10.In AM modulation ,when the modulation index increases, transmitted power is
- A.
constant
- B.
increased
- C.
decreased
- D.
none of these
- 11.The bandwidth of the FM signal is_______than AM signal.
- A.
Lesser
- B.
Either lesser or larger
- C.
Larger
- D.
None of these
- 12.Messages travel from transmitter to receiver with help of
- A.
Transmitter
- B.
Receiver
- C.
Channel
- D.
antennas
- 13.In order to reduce interference, the signal should be
- A.
Amplified
- B.
Multiplied
- C.
Demodulated
- D.
Modulated
- 14.Non electric signal is converted into electrical signal by
- A.
transducer
- B.
Receiver
- C.
Line
- D.
None of these
- 15.The frequency range of 1GHZ to 30GHZ are referred as
- A.
Sound waves
- B.
Micro waves
- C.
Mini waves
- D.
None of these
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