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,
Effective shunt impedance, excluding beam loading = 30K ohm.
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.