Microwave Communication - Study Mode
[#71] When it is desired that short-range targets be clearly seen on a pulsed-radar set, it is important that the receiver and display system have
Correct Answer
(C) The shortest possible time
[#72] The antenna separations (in meters) required for optimum operation of a space diversity system can be calculated from: where R = effective earth radius (m) and L = path length (m)
Correct Answer
(B) $${ ext{S}} = frac{{3lambda { ext{R}}}}{{ ext{L}}}$$
[#73] The aquadag coating on the inside of PPI tube is used
Correct Answer
(C) As a second anode and to prevent the build-up of secondary field
[#74] What allow microwave to pass in only one direction?
Correct Answer
(D) Ferrite emitter
[#75] If the instantaneous RF potentials on the two sides of a magnetron cavity are of opposite polarity, the operation is in the
Correct Answer
(A) $$pi $$ mode