Explore topic-wise MCQs in Engineering.

Which of the following noise does not occur in transistors?

FM amplifier in a superheterodyne receiver

In a radio receiver, the local oscillator is tuned to a frequency

The geostationary communication satellite APPLE is parked in the equatorial orbit at

Satellite launch sites are invariably located on Eastern seaboards to ensure that

To make antenna more directional, either its size must be increased or

India's first domestic geostationary satellite 1NSAT-IA was launched on 10th April 1982 from

The most effective anti jamming technique is

For satellite communication, standard Earth stations have antenna diameters in the range of __________ metre.

The owner of a communication satellite is usually required to keep the spacecraft on station at its assigned place in the geosynchronous orbit with an accuracy of __________ degree.

Power received from Sun per m² surface area of a geosynchronous satellite in nearly __________ watt.

A certain sound has 10000 times more energy than another sound. The number of times it would sound stronger to a listener is

The quality of a space-link is measured in terms of the __________ ratio.

The useful operational life of INSAT-IB (launched in 1983) is expected to end by

Orbital disturbances of a geosynchronous satellite are caused by the

If , the coefficient of term e^-t in f(t) will be

A signal g(t) = A then g(t) is a

The Fourier series of an odd periodic function contains

The number of days when Earth's shadow falls on a geosynchronous satellite is

A voltage wave having 5% fifth harmonic content is applied to a series RC circuit. The percentage fifth harmonic content in the current wave will be

The final value theorem is

If

The analog signal m(t) is given below m(t) = 4 cos 100 pt + 8 sin 200 pt + cos 300 pt, the Nyquist sampling rate will be

Double integration of a unit step function would lead to

The system with given pole-zero diagram is

A pole zero pattern of a certain filter is shown in figure. This filter must be

Laplace transform of a pulse function of magnitude E and duration from t = 0 to t = a is

The z-transform of a particular signal is given
where

The system after implementation will be

If is the Laplace transform of f(t) then f(0⁺) is

Z transform is a non-linear operation.

An impulse function consist of

Two function g₁(t) and g₂(t) with correlation of 6 has average power of 4 and 5 respectively. The power of g₁(t) + g₂(t) is

A box has 4 white and 3 red balls. Two balls are taken out in succession. What is the probability that both are white?

(t) is a

If I (s) , initial value of i(t) is

The analog signal given below is sampled by 600 samples per second for m(t) = 3 sin 500 pt + 2 sin 700 pt then folding frequency is

If I (s) , the final value of i(t) is

As compared to 17.34 antenna, the total increase in the signal relayed by 4.5 antenna of INTELSAT-IV is

Radio broadcasting is a familiar example of

The selectivity of most receivers is determined largely by

In a broadcast superheterodynes receiver having no RF amplifier, the loaded Q of the antenna coupling circuit is 100. If the intermediate frequency is 455 kHz. The rejection ratio at 25 MHz will be

Which one of the following statements regarding DSI is wrong?

Which one of the following statements regarding compandor is FALSE?

In a superheterodyne receiver, the IF is 455 kHz. If it is tuned to 1200 kHz, the image frequency will be

Standard AM radio broadcasts are confined to

The noise produced by a resistor is proportional to

The Sun blots out the transmission of a geosynchronous satellite twice a year when satellite passes directly in front of it. This outage lasts for about

In satellite communication, frequency modulation is used because satellite channel has

A transmitter serial current contains

Which of the following factor does NOT contribute to the drift of a geostationary satellite from its stationary position in space?