Question 1 : Flyback switched mode is used in television because it does not require a filter choke.
1. True
2. False
3.
4.
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Question 2 : In India, the subcarrier frequency for transmission of color difference signals in television is approximately ________
1. 10.47 MHZ
2. 5.4 MHZ
3. 7.67 MHZ
4. 1.3 MHZ
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Question 3 : Carbon microphone has a bidirectional feature.
1. True
2. False
3.
4.
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Question 4 : Which of the following is a reflector antenna?
1. Marconi reflector antenna
2. Corner reflector antenna
3. Helical antenna
4. Bow tie antenna
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Question 5 : In which of the modulation, the waveform is modified resulting in a signal where each quarter cycle is transposed.
1. AM
2. FM
3. PM
4. TM
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Question 6 : TM stands for _________
1. Trans positional Modulation
2. Time Multiplexing
3. Transit Modulation
4. Tuned Modulation
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Question 7 : Ground wave travels along surface of ground.
1. True
2. False
3.
4.
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Question 8 : Waves of frequency 60MHz can penetrate the atmosphere.
1. True
2. False
3.
4.
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Question 9 : Armstrong modulator can only generate FM signal.
1. True
2. False
3.
4.
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Question 10 : Waves of which frequency can penetrate the atmosphere?
1. higher than 10 MHz
2. higher than 20 MHz
3. higher than 30 MHz
4. higher than 100 MHz
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