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Microwave Communication

Microwave Communication
If the instantaneous RF potentials on the two sides of a magnetron cavity are of opposite polarity, the operation is in the

π mode
π/4 mode
π/2 mode
2π mode

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Microwave Communication
At what position is the input signal inserted into a traveling-wave tube?

At the collector
At the control grid of the electron gun
At the collector end of the helix
At the cathode end of the helix

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Microwave Communication
A magnetron is operated at a duty cycle of 0.001. It has a peak power output of 100 kilo-watts. Its average power is

1,000,000 watts
100 watts
1,000 watts
10,000 watts

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Microwave Communication
Which of the following is used as a high power microwave oscillator?

Thyratron
Reflex-klystron
Magnetron
Klystron

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Microwave Communication
Calculate the effective earth’s radius if the surface refractivity is 301.

8493 mmi
6370 km
6370 mi
8493 km

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Microwave Communication
Rainfall is an important factor for fading of radio waves at frequencies above

10 GHz
1 GHz
100 MHz
100 GHz

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MORE MCQ ON Microwave Communication

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