The Gunn diode oscillator Operates over a positive resistance characteristic Generates frequencies which are below 100 MHz Is capable of generating continuous microwave power of the order of kilowatt Depends on the formation of charge domain TRUE ANSWER : ? YOUR ANSWER : ?
A PPI cathode-ray tube as used on a radar set Is used for receiver alignment Indicates both the range and azimuth of a target Is used to check the percentage of modulation Indicates only the range of a target TRUE ANSWER : ? YOUR ANSWER : ?
Klystron oscillators are most often used in the frequency range of 30 to 30000 MHz 300 to 3000 MHz 10 to 10000 MHz 3000 to 30000 MHz TRUE ANSWER : ? YOUR ANSWER : ?
Microwave frequencies are normally regarded as those in the range of 10 to 1000 GHz 1000 to 10,000 GHz 1 to 100 GHz 1 to 500 MHz TRUE ANSWER : ? YOUR ANSWER : ?
A Class-S Emergency Position-Indicating Radio Beacon (E.P.I.R.B) Must be capable of floating or being secured to a survival May be tested during the first five minutes of any hour All of these Must have its battery replaced after emergency use TRUE ANSWER : ? YOUR ANSWER : ?
Which of the reception problems below that is not due to multipath? Rayleigh fading Slow fading Random Doppler shift Delayed spreading TRUE ANSWER : ? YOUR ANSWER : ?
The frequency of the oscillation generated by a magnetron, is mainly determined by The flux density of the external magnet The dimension of each cavity resonator The number of the cavity resonators The ratio of the dc cathode voltage to the magnetic flux density TRUE ANSWER : ? YOUR ANSWER : ?
In an SHF pulsed radar set, a reflex klystron can be used as a Transmitter oscillator Local oscillator Duplexer stage Single mixer stage TRUE ANSWER : ? YOUR ANSWER : ?
A traveling-wave tube (TWT) amplifies by virtue of The effect of an external magnetic field The energy liberated form the collector The absorption of energy by the signal from an electron stream The energy contained the cavity resonators TRUE ANSWER : ? YOUR ANSWER : ?
What do you call an attenuation that occurs over many different wavelengths of the carrier? Wavelength fading Slow fading Rayleigh fading Rician fading TRUE ANSWER : ? YOUR ANSWER : ?