ISRO Scientist or Engineer Electronics 2016
For the following questions answer them individually
A binary source in which 0s occurs 3 times as often as 1s. Then its entropy in bits/symbol will be
Maximum value of signal to noise ratio of an 8-bit ADC with an I/P range of 10 V will be
The available power required at a receiving antenna is $$10^-6$$ Watts. Transmitting and receiving antennas have gain of 40dB each. The carrier frequency is 4GHz and the distance between them is 30 miles. The required transmitter power is
An FM signal at 10.7 MHz IF needsto be digitized for demodulation in a digital domain. If the bandwidth of this signal is 200 kHz, the maximum usable sampling frequency is
A satellite system employs QPSK modulation with 40% excess bandwidth per carrier including guard band. The voice channels use 64 kbps PCM coding. The no. of channels supported by 36 MHz bandwidth of the transponder in bandwidth limited case will be
