Microwave Communication - Study Mode
[#91] In a microwave measurement setup, the power roughing to the load is found to be 50 mW. If a 3 dB coupler is placed before the load, the power to the load will be
Correct Answer
(B) 25 mW
[#92] In a parallel plate waveguide, what is the principal wave?
Correct Answer
(A) TEM wave
[#93] In cavity magnetron, strapping is used to
Correct Answer
(A) prevent mode jumping
[#94] Consider the following statements about the maximum usable frequency for radio communication between two specified points by reflection from an ionosphere layer: 1. It is equal to the critical frequency 2. It is more than the critical frequency 3. It depends upon the distance between the two points 4. It depends upon the height of the ionosphere layer Of these statements
Correct Answer
(D) 2, 3 and 4 are correct
[#95] What is the frequency range of VHF electromagnetic waves?
Correct Answer
(C) 30-300 MHz