ISRO Scientist or Engineer Electronics 2014
For the following questions answer them individually
ISRO Scientist or Engineer Electronics 2014 - Question 21
For a BER of $$10^{-5}$$, which modulation schemewill require minimal power?
ISRO Scientist or Engineer Electronics 2014 - Question 22
Which one of following is not synthesizable VHDL statement?
ISRO Scientist or Engineer Electronics 2014 - Question 23
Subsystem A requires two voltages V1 and V2 with equal power ratings. Power conversion scheme adapted for the power supply design is shown in the following figure. Whatis the overall power conversion efficiency?
ISRO Scientist or Engineer Electronics 2014 - Question 24
Which of the following modulation scheme is most bandwidth efficient?
ISRO Scientist or Engineer Electronics 2014 - Question 25
A Colpitts Oscillator is having tank capacitances of InF and 10nF, and inductance of 0.1 $$\mu$$ H. The gain required by the circuit to start oscillating is :
ISRO Scientist or Engineer Electronics 2014 - Question 26
A digital CMOS IC operating at 10MHz clock frequency consumes 100mW power; the same IC operating at 15 MHz clock frequency consumes 140mW power. Whatis the static power consumption of the IC?
ISRO Scientist or Engineer Electronics 2014 - Question 27
An amplifier has a gain of 50 dB, and noise figure of 10dB. Assuming an ambient temperature of 300 K, what will be the total equivalent noise temperature at the input of the amplifier?
ISRO Scientist or Engineer Electronics 2014 - Question 28
Diodes in the following circuit are ideal. Which is the correct waveform across $$R_L$$?
ISRO Scientist or Engineer Electronics 2014 - Question 29
Identify the modulation schemes for the shown signal constellation diagrams
ISRO Scientist or Engineer Electronics 2014 - Question 30
The Fourier Transform of a discrete and aperiodic signal is:
