ISRO Scientist or Engineer Electronics 2014
For the following questions answer them individually
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?
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 :
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?
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?
Diodes in the following circuit are ideal. Which is the correct waveform across $$R_L$$?
