ECE :: Communication Systems
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Consider the following test signal patterns
- Ramp
- Grill
- Grey shades
- Sine pulse
- Picture line up generating equipment
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If aspect ratio is
and number of lines in each frame is 625, the number of picture elements in one frame is -
Indicate the false statement: If SWR on a transmission line is infinite, the line is terminated in
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In TV signals colour burst is used
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The resonant frequency of an RF amplifier is 1 MHz and its bandwidth is 10 kHz. The Q factor will be
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Which camera tube has highest sensitivity and very wide spectral response?
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Assertion (A): A Smith chart can be used for a number of calculations of a transmission line
Reason (R): Smith chart is basically a polar impedance diagram.
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A computer monitor uses 180 W in normal operation and 20 W in sleep mode. The computer is on all the 24 hours but is in sleep mode for 18 hours a days. The energy units saved in 30 days are
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Consider the following functions
- It detects the AM video carrier IF so as to produce the video signal
- It produces and separates out the inter carrier sound IF of 5.5 MHz
- It amplifies the video signal
- It amplifies the audio signal
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