ECE :: Communication Systems
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An antenna has a resistance of 50 Ω and an equivalent noise resistance of 30 Ω The noise figure in decibels is
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An MTI radar operating at 5 GHz has a PRF of 800 pps. The lowest blind speed is
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For maximum output the width of air gap of audio head should be
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The simplest mixer circuit for public address system uses
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PAM stands for
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An RF carrier of 12 kV at 1 MHz is amplitude modulated by 1 kHz signal having peak value of 6 kV. The modulation pattern is seen on CRO screen. The voltage indicated will be
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In the television system in India, each channel is allowed a bandwidth of
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A diode detector load consists of 0.01 μF capacitor in parallel with a 5 k ohms resistor. The maximum depth of modulation without diagonal clipping at modulating frequency of 1000 Hz and 10 kHz is
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