Microwave Communication A shipboard equipment which measures the distance between the ship’s bottom and the ocean floor. SONAR Echosounder LORAN Fathometer SONAR Echosounder LORAN Fathometer ANSWER DOWNLOAD EXAMIANS APP
Microwave Communication In a pulsed radar set, the function of the duplexer is to Allow the transmitter and the receiver to operate from a common antenna Aid in calibrating the display unit Prevent frequency drift in the klystron All of these Allow the transmitter and the receiver to operate from a common antenna Aid in calibrating the display unit Prevent frequency drift in the klystron All of these ANSWER DOWNLOAD EXAMIANS APP
Microwave Communication Theoretically electromagnetic radiation field strength varies in inverse proportion to the square of the distance, but when atmospheric attenuation effects and the absorption of the terrain are taken into account the attenuation can be as high as the inverse ___________ power of the distance. Sixth Fourth Fifth Third Sixth Fourth Fifth Third ANSWER DOWNLOAD EXAMIANS APP
Microwave Communication 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 30 to 30000 MHz 300 to 3000 MHz 10 to 10000 MHz 3000 to 30000 MHz 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 May be decreased Must be doubled Must remain as before Must be increased May be decreased Must be doubled ANSWER DOWNLOAD EXAMIANS APP
Microwave Communication It is possible to increase the maximum range of a radar equipment by Lowering the pulse frequency Narrowing the beam width and increasing the pulse duration All of these Raising the peak power of the transmitter Lowering the pulse frequency Narrowing the beam width and increasing the pulse duration All of these Raising the peak power of the transmitter ANSWER DOWNLOAD EXAMIANS APP
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