ISRO Scientist or Engineer Electronics 2013

A linear regulator is attempted using discrete components as shown below. What is the output voltage?

If range of a radar is to be doubled, the peak transmit power of the radar has to be:

The electric field measured in the far field of an antenna at a distance of 50m is 1V/m. The average power densities at a distance of 500m from the antenna is

If a counter having 10 Flip Flops is initially at 0, what count will it hold after 2060 pulses ?

For a frequency modulated signal represented by $$ s(t) = 10 \sin (6 \times 10^8 t + 2 \sin 100\pi t)$$. The maximum frequéncy deviation in the carrier from its unmodulated frequency is:

For which of the following conditions, the circuit shown below will function as precision full. wave rectifier?

In a monostatic radar, if the antenna aperture is doubled, then the radar range will

The disadvantage of single stub matching is that

A certain antenna with an efficiency of 95% has maximum radiation intensity of 0.5 W/sr. The directivity of the antenna fed by input power of 0.4 W

A memory system of size 16 K bytesis required to be designed using memory chips which have 12 address lines and 4 data lines each. Then numberof such chips required to design the memory system is