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## Engineering

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problem 1: What do you mean by transit time? Why it becomes a limiting factor at lug her frequencies?

problem 2: Describe different kinds of vacuum tubes in lieu of their weakness and strengths.

problem 3: What can be the probable solutions to the limitations of conventional tubes at high frequencies? Which one is the most excellent?

problem 4: describe the principle of the working of Klystron.

problem 5: Why are multicavity klystron and reflex klystron mainly used for entirely different application?

problem 6: A two cavity klystron amplifier has the given parameters:

V0 = 1000V, R0 = 40Kohm, I0 = 25mA, Freq = 3GHz,
Gap-spacing (d) =1mm,
Cavities-spacing = 4cm,

a) Determine the input gap voltage to give maximum voltage V2.
b) Determine the voltage gain and efficiency of the amplifier neglecting the beam loading.

problem 7: Why a microwave is termed as Microwave?

problem 8: What do you mean by frequency range of microwave? What limits the frequency of microwaves?

problem 9: prepare down the various bands in microwave range all along with the corresponding frequencies.

problem 10: Enlist the benefits of microwave frequencies over the lower frequency waves.

Electrical & Electronics, Engineering

• Category:- Electrical & Electronics
• Reference No.:- M97429

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