ISRO Scientist or Engineer Electronics 2011

Go-stationary satellites are placed in equatorial orbits at the height approximately

For a single mode optical cable with 0.25dB/km loss, the optical power 100km from a 0.l1mW source will be .....

The function of a strobe function in digital system is

The impulse responseof a linear time invariant system is h (n) = {1,2, 1,-1}. The response for the input signal x(n) = {1,2,3,1} is

Which of the following statement regarding a constantis not true

In a 3085 microprocessor system with memory mapped $$\frac{I}{O}$$

The Thevenin and Norton circuits are

A broadside array operating at 100 cm wavelength consist of 4 half wave dipoles spaced 50 cm apart. Each element carries radio frequency current in the same phase and of magnitude 0.5 A. The radiated power will be .................. if the radiation resistance is 146 ohm.

An NPN transistor has a beta cutoff frequency $$f_{\beta}$$, of 1MHz, and a common emitter short circuit low frequency current gain $$\beta_{o}$$, of 200. its unity gain frequency $$f_{\gamma}$$ and the alpha cut-off frequency f, respectively are

Fora class B amplifier providing a 20V peak signal to 16 ohm load and a power supply of $$V_{cc}$$= 30V,the efficiency will be.