Q. The noise generated by a resistor depends upon

View solution

Q. A source has two symbols x1 and x2 with probabilities pi and pr. If a new source with four symbols is generated from the above source, the new symbol probabilities will be (∈ is a number such that 0 < ∈ < 1)

View solution

Q. Coupling and bypass filters can be a source of

View solution

Q. Assertion (A): SSB transmitter is generally smaller than AM transmitter

Reason (R): SSB systems mostly use combined transmitter receiver.

View solution

Q. The VLF, LF and MF antennas are

View solution

Q. The HV and other voltage supplies for a TV receiver are obtained from IHVT. The full name for this device is

View solution

Q. The main systems used for generation of SSB are

View solution

Q. An antenna operates effectively when its dimensions are

View solution

Q. The mobile unit of a mobile telephone is generally in

View solution

Q. Assertion (A): Water waves are longitudinal but EM waves are transverse

Reason (R): In an EM wave electric field, magnetic field and propagation are mutually perpendicular.

View solution

Q. Some multiplexing arrangements for telephone system are

1. Space multiplexing
2. Time division multiplexing
3. Frequency division multiplexing

Which of the above allow transmission of many independent signals over a single channel?

View solution

Q. Industrial noise has the frequency range of

View solution

Q. Thermal noise Power is

View solution

Q. The characteristic impedance of coaxial cable is about

View solution

Q. The diameter and thickness of CD are

View solution

Q. If e = 10 sin(10⁸ t + 3 sin 10⁴ t) then carrier frequency is

View solution

Q. Thermal noise is independent of

View solution

Q. The decorative lighting works on the principle of

View solution

Q. In an oscillator crystal, the parallel resonant frequency is

View solution

Q. The maximum range of a radar is proportional to

View solution