Question 21 : What do you understand by the term Cross talk?
1. generation of closely lying sidebands
2. a method of increasing bandwidth
3. a method of decreasing bandwidth by converting DSB-SC signal to SSB-SC
4. disturbance caused in nearby circuit due to transmitted signal
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Question 22 : Too much antenna gain causes ________
1. jitter
2. high sensitivity
3. a very wide microwave beam
4. a very narrow microwave beam
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Question 23 : The characteristic impedance of a waveguide is fixed.
1. True
2. False
3.
4.
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Question 24 : The number of circular polarization modes is _________
1. 1
2. 2
3. many
4. 3
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Question 25 : If power transmitted is 90kW, what is the field at a distance of 45km?
1. 2
2. 1
3. 0.036
4. 0.01
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Question 26 : TDR stands for ________
1. Total Distance of Reflection
2. Time Domain Response
3. Time Domain Reflectometry
4. Time Delay Ratio
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Question 27 : Luminance refers to ________
1. contrast
2. diffusion
3. brightness
4. aperture
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Question 28 : How many lines are there in an NTSC signal?
1. 1024
2. 1856
3. 625
4. 525
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Question 29 : RGB stands for ________
1. Red Green Brown
2. Red Green Black
3. Red Gold Blue
4. Red Green Blue
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Question 30 : How we can define satisfactory performance of an analog microwave system?
1. carrier to noise ratio that exceeds a given value
2. carrier to noise ratio that is below a given value
3. an ERP value that exceeds a given value
4. an ERP value that is below a given value
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