Q. The characteristic impedance of coaxial cable is about

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Q. The diameter and thickness of CD are

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Q. If e = 10 sin(10⁸ t + 3 sin 10⁴ t) then carrier frequency is

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Q. Thermal noise is independent of

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Q. The decorative lighting works on the principle of

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Q. In an oscillator crystal, the parallel resonant frequency is

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Q. The maximum range of a radar is proportional to

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Q. Which of the following statement regarding the advantages of the phase discriminator over the slope detector is false?

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Q. The highest modulating frequency typically used in AM systems is

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Q. The line of sight communication requires the transmit and receive antennas to face each other. If the transmit antenna is vertically polarized, for best reception to the receive antenna should be

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Q. The bandwidth of FM for Commercial Purpose is

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Q. In home tape recorders the tape width is 2 inches.

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Q. In MF range, increasing the transmitter power

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Q. The most frequent users of long distance VLF transmission is

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Q. BFO stands for

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Q. SSB-SC stands for

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Q. A lens has a hyperfocal distance of 7.5 m. It is focused at 7.5 m. Then

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Q. In FM 'guard band' is provided

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Q. Assertion (A): FM requires more bandwidth than AM

Reason (R): Wide band FM is used for broadcast transmissions.

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Q. A frequency doubler has an FM signal input at 13 MHz with a deviation of 5 kHz. The output, frequency for the carrier will be

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