Q. A TV receiver has 20 kV EHT supply and total beam current (for 3 electron guns) of 1500 μA. The power handled by IHVT is

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Q. Full duplex operation

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Q. In a tape recorder the erase head is

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Q. Consider the following statements as regards advantages of CCD sensors as camera pick up tube

1. High sensitivity
2. Good spectral response
3. Image lag absent

Out of the above which are correct

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Q. Some desirable features of a computer communication network are

1. It should accept an intended transmission without excessive delay
2. The data arriving at a receiving point should be processed rapidly
3. When a transmission calls for a response, the delay of response should be minimum.

Which of the above are true?

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Q. Television transmission is by

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Q. In the television system in India, the aspect ratio is

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Q. In high power radars, which of the following are used for switching?

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Q. A remote control for TV uses

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Q. In the FM wave described by equation v = 15 sin (4 x 10⁸ t + 3 sin 1100 t), the carrier frequency and signal frequency respectively are

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Q. In the television system in India, the odd and even fields are scanned

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Q. Consider the following:

1. A signal f(t) and its Hilbert transform fh(t) have the same energy density spectrum
2. A signal f(t) and its Hilbert transform, fh(t) have the same auto correlation function
3. A signal f(t) and its Hilbert transform are mutually orthogonal

Which of the above are true?

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Q. Vidicon and plumbicon operate on the principle of

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Q. A TV receiver has a width of 60 cm. The aspect ratio is 4/3. The required EHT supply is about

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Q. The typical squelch circuit

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Q. Consider the draw backs

1. Slope overload
2. Serration noise
3. Granular noise

Which of these draw backs does Delta modulation have?

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Q. It is required to increase the maximum range of a radar by a factor of two. The peak power transmitted in the radar system has to be increased by a factor of

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Q. Armstrong F.M. transmitter performs frequency multiplication in stages

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Q. A source generates three symbols with probabilities 0.25, 0.25, 0.50 at a rate of 3000 symbols per second. Assuming independent generation of symbols, the most efficient source encoder would have average bit rate is as

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Q. The filter circuit for feeding tweeter has

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