Microwave Communication A shipboard equipment which measures the distance between the ship’s bottom and the ocean floor. SONAR LORAN Echosounder Fathometer SONAR LORAN Echosounder Fathometer ANSWER DOWNLOAD EXAMIANS APP
Microwave Communication What is the purpose of the electromagnetic field which surrounds a traveling-wave tube? To accelerate the electron To keep the electrons from spreading out To slow down the signal on the helix To velocity modulate the electron beam To accelerate the electron To keep the electrons from spreading out To slow down the signal on the helix To velocity modulate the electron beam ANSWER DOWNLOAD EXAMIANS APP
Microwave Communication A Class-S Emergency Position-Indicating Radio Beacon (E.P.I.R.B) Must have its battery replaced after emergency use All of these May be tested during the first five minutes of any hour Must be capable of floating or being secured to a survival Must have its battery replaced after emergency use All of these May be tested during the first five minutes of any hour Must be capable of floating or being secured to a survival 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 Wavelength fading Slow fading Rician fading Rayleigh fading Wavelength fading Slow fading ANSWER DOWNLOAD EXAMIANS APP
Microwave Communication The aquadag coating on the inside of PPI tube is used To focus the beam of primary electrons All of these As a second anode and to prevent the build-up of secondary field To shield the electron beam from unidirectional magnetic To focus the beam of primary electrons All of these As a second anode and to prevent the build-up of secondary field To shield the electron beam from unidirectional magnetic 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 remain as before Must be increased Must be doubled May be decreased Must remain as before Must be increased Must be doubled May be decreased ANSWER DOWNLOAD EXAMIANS APP
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