Microwave Communication A thin layer of dirt and grime coverts the reflecting surface of the parabolic dish of a radar set. The particular effect on the performance of the radar will be A decrease in range A reduction in horizontal resolution A decrease in gain No noticeable effect A decrease in range A reduction in horizontal resolution A decrease in gain No noticeable effect ANSWER DOWNLOAD EXAMIANS APP
Microwave Communication In an SHF pulsed radar set, a reflex klystron can be used as a Single mixer stage Transmitter oscillator Local oscillator Duplexer stage Single mixer stage Transmitter oscillator Local oscillator Duplexer stage ANSWER DOWNLOAD EXAMIANS APP
Microwave Communication It is possible to increase the maximum range of a radar equipment by Lowering the pulse frequency All of these Narrowing the beam width and increasing the pulse duration Raising the peak power of the transmitter Lowering the pulse frequency All of these Narrowing the beam width and increasing the pulse duration Raising the peak power of the transmitter ANSWER DOWNLOAD EXAMIANS APP
Microwave Communication If the duration of the radar transmitted pulse, on a particular range of operation, is increased, the required bandwidth of the receiver’s IF amplifiers Must be doubled Must remain as before Must be increased May be decreased Must be doubled Must remain as before Must be increased May be decreased ANSWER DOWNLOAD EXAMIANS APP
Microwave Communication The frequency of the oscillation generated by a magnetron, is mainly determined by The flux density of the external magnet The number of the cavity resonators The dimension of each cavity resonator The ratio of the dc cathode voltage to the magnetic flux density The flux density of the external magnet The number of the cavity resonators The dimension of each cavity resonator The ratio of the dc cathode voltage to the magnetic flux density ANSWER DOWNLOAD EXAMIANS APP
Microwave Communication What do you call an attenuation that occurs over many different wavelengths of the carrier? Rician fading Rayleigh fading Slow fading Wavelength fading Rician fading Rayleigh fading Slow fading Wavelength fading ANSWER DOWNLOAD EXAMIANS APP
EXAMIANS