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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
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Related Question
Microwave Communication
Which of the following is used as a high power microwave oscillator?
Reflex-klystron
Magnetron
Klystron
Thyratron
Reflex-klystron
Magnetron
Klystron
Thyratron
Answer
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Microwave Communication
In a radar-set receiver, the usual mixer stage is
And FET
A silicon crystal
A Rochelle salts crystal
A tunnel diode
And FET
A silicon crystal
A Rochelle salts crystal
A tunnel diode
Answer
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Microwave Communication
A PPI cathode-ray tube as used on a radar set
Is used for receiver alignment
Is used to check the percentage of modulation
Indicates only the range of a target
Indicates both the range and azimuth of a target
Is used for receiver alignment
Is used to check the percentage of modulation
Indicates only the range of a target
Indicates both the range and azimuth of a target
Answer
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Microwave Communication
In a pulsed radar set, the STC circuit is used to
Increases receiver sensitivity for echoes from targets
Vary the pulse frequency in order to control the maximum target
Improve the target bearing resolution
Reduce interference from the effects of sea return
Increases receiver sensitivity for echoes from targets
Vary the pulse frequency in order to control the maximum target
Improve the target bearing resolution
Reduce interference from the effects of sea return
Answer
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Microwave Communication
To achieve good bearing resolution when using a pulsed-radar set, an important requirement is
A narrow, antenna-beam width in the horizontal plane
A low repetition rate
A high duty cycle
A narrow, antenna-beam width in the vertical plane
A narrow, antenna-beam width in the horizontal plane
A low repetition rate
A high duty cycle
A narrow, antenna-beam width in the vertical plane
Answer
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