Q. A ground wave travels along surface of ground.

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Q. In narrowband FM, the modulation index is

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Q. A single-sideband (SSB) signal contains 3 kW. The power content of the carrier is __________ kW.

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Q. Waves of frequencies higher than 30 MHz penetrate the atmosphere.

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Q. The storage capacity of audio CD is 540 Mb per side.

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Q. In case of a low level AM transmitter, the amplifier modulated stage must be

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Q. The device most likely to be found in an SSB transmitter is

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Q. Point out the false statement

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Q. In a low level AM system, the modulated amplifiers stage must be

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Q. Entropy gives

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Q. Quantization noise occurs in

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Q. AC hum is picked up from power cables

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Q. PIL tube means

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Q. In an SSB transmitter one is most likely to find

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Q. The antenna current of an AM transmitter is 8 A. When only the carrier is sent, but it increases to 8.93 A. when the carrier is sinusoidally modulated. The percentage modulation is nearly

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Q. In digital TV digital imaging standard comprises

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Q. The 2 out of 5 code has

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Q. Consider the following statements as regards BPSK and QPSK:

1. In BPSK we deal individually with each bit of duration Tb
2. In QPSK we lump two bits to form a symbol
3. In both BPSK and QPSK signal changes occur at bit rate
4. In QPSK the symbol can have any one of four possible values

Which of the above statements are correct?

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Q. In equally tampered musical scale, an octave is divided into

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Q. If the target cross-section is changing, the best scanning system for accurate tracking is

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