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ISRO EC 2019: Microwave Engineering Booster Quiz 1
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Question 1
A Gold cavity resonator at 10 GHz is fully coated using 
m YBCO (Yttrium Barium Copper Oxide) material and operating at boiling temperature of liquid nitrogen. What is the Skin Depth of RF at this frequency?
Assume
= 4X107 Siemens/meter at cavity operating temperature.
m YBCO (Yttrium Barium Copper Oxide) material and operating at boiling temperature of liquid nitrogen. What is the Skin Depth of RF at this frequency? Assume
= 4X107 Siemens/meter at cavity operating temperature.Question 2
The cavity magnetron uses strapping to
Question 3
One of the reason why conventional vacuum valve tubes not used at microwave frequencies is that their
Question 4
A four port directional coupler has 4:1 power splitting ratio and has dissipation loss of 3dB. The coupler directivity is 40dB. What fraction of input power P1 will go to ports P2 and P3?
Question 5
The transmit time in the repeller space of a reflex klystron muct be (n+3/4) cycles to ensure that,
Question 6
To avoid difficulties with stapping at high frequencies, the type of cavity structure used in the magnetron is,
Question 7
Indicate which one of the following modes do NOT exist in a rectangular resonant cavity
Question 8
A satellite communication link has uplink C/No of 50 dB-Hz and downlink C/No of 47 dB-Hz. What would be overall link C/NO?
Question 9
The modes in a reflex klystron
Question 10
Relationship between doppler frequency shifts of two radars A and B having 0.1 foot and 0.05 foot wavelengths, approaching the target at 1000 feet per second and 2000 feet per second rate respectively, will be
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Dec 30ESE & GATE EC
