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Calculate the dissipated power of a 91% efficient antenna if the transmitted power is 15.4 W.
A) 1.83 W B) 1.38 W ©) ۸۷ D) 1.43 W

Due to smaller dimensions of helix compared to wavelength which mode of radiations
occur in Helical antenna ?

A) Elliptical B) Axial C) Normal D) Circular

An antenna has 40 ಟಿ antenna resistance and 60 © radiation resistance. Calculate the
efficiency of antenna.
A) 30% B) 60% C) 40% D) 50%

A pulse amplitude modulated signal can be detected by using
A) An ADC 8) Low pass filter 0) Highpass filter 0) Band pass filter

Under which of the following condition aliasing takes place ?

A) Sampling signal frequency less than Nyquist rate

B) Sampling signal frequency more than Nyquist rate

C) Sampling signal frequency equal to Nyquist rate

D) Sampling signal frequency at a rate which is twice the Nyquist rate

If the synchronization between the transmitter and receiver falls which of the following
pulse systems would be affected ?

A) PAM B) PWM
0) PPM D) None of these

If the radius of the split cell is 50% of the radius of the original cell, the coverage area of
the split cell is the coverage area of the original cell.

A) Equal to B) One half of

C) One fourth of D) One tenth of

Which among the following is the decentralized hand-off protocol and distributes the
hand-off decision process ?

A) Network controlled hand off B) Mobile assisted hand off
C) Soft hand off D) Mobile controlled hand off

The output of the vertical amplifier applied to the yoke in a TV receiver consists of
A) Direct current B) Amplified vertical sync pulse
C) A saw tooth voltage D) A saw tooth current