ISRO Scientist or Engineer Electronics 2014

What is the value of the major cross-sectional dimension(width) of a rectangular waveguide with dominant TE19 mode propagation, if its cut off frequency is 10 GHz?

In a Traveling-wave Tube, the velocity of electron beam with respect to the axial velocity of RFfield is kept...

In satellite communication, scrambling is mainly used for -

Scattering Matrix for a microwave network, which is matchedatall the ports, will satisfy the following condition:

Following waveform shows output of a 4 bit DAC with 5V reference voltage. The 4 bit digital input of DAC is connected to 4 bit up counter, the one bit input of DAC Is stuck at ‘0’, which is this bit ?

Which of the followinghasthe highest skin depth?

A network contains linear resistors and ideal voltage sources. If values of all the resistors are doubled,then voltage across each resistor is

A coherent QPSK demodulatoris required on ground for receiving data from a LEO satellite. What should be optimum order of PLL in the carrier phase tracking loop?

VSWR of purely resistive load of normalized value n + j0 for n < 1 is :

Two discrete time systems have impulse response $$h_1[n] = \delta[n - 3]$$ and $$h_2[n] = \delta[n - 5]$$. If these two systems are cascaded, thenthe overall impulse response of the cascaded system is