Q. The reactance of coupling capacitor for AC signals in an amplifier, should be

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Q. Assertion (A): In India we use CCIR-B standard

Reason (R): Video signals are frequency modulated.

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Q. CATV stands for

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Q. Household tape recorders use

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Q. A 400 W carrier is modulated to a depth of 75 percent. The total power in modulated wave will be

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Q. A geostationary satellite

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Q. For an ideal 3000 Hz channel, Nyquist rate is

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Q. Assertion (A): Electromagnetic waves in free space spread uniformly in all directions from a point source

Reason (R): Free space has no interference or obstacles.

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Q. In the FM wave described by equation v = 15 sin (4 x 10⁸ t + 3 sin 1100 t), the maximum frequency deviation is

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Q. The radar cross-section of a target depends an

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Q. The Nyquist sampling interval, for the signal sin c (700t) + sin c (5000 t) is

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Q. A line has L = 0.8 µH/m and C = 32 pF/m. Z0 =

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Q. A line has standing waves with a voltage maximum of 35 mV and minimum of 17.5 mV VSWR is

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Q. For a bit rate of 8 kbps, the best possible values of the transmitted frequencies in a coherent binary FSK system are

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Q. If luminance signal Y = 0.3 R + 0.59 G + 0.11 B, the hue of R - Y colour is

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Q. Trap circuits used in video IF amplifier of colour TV are

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Q. 24 telephone channels, each band limited to 3.4 kHz are to be time division multiplexed using PCM. If sampling frequency is 10 kHz and number of quantization levels is 128, the required bandwidth of PCM is

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Q. Resonant circuits are used in

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Q. Linear diode detector utilizes

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Q. In the equivalent circuit of a moving coil cone type loudspeaker, the mass of the moving system is represented by

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