Microwave objective question MCQ

Microwave Multiple Choice Questions 1

1. The Wavelength correspond to Microwave frequency range is

a.    30 to 300GHz

b.    3   to 30 GHz

c.    0.3 to 3 Ghz
d.    300 to 3oooGHz


2.The main advantage of microwave is that-

a. Highly Directive.
b.Moves at the speed of light.
c.S/N ratio grater.
d. High penetration power.

3.Reflex Klystron is a -
a.Ampilfier.
b.Oscillator.
c.Attenuator.
d.Filter.

4.Klystron operates on the principle of-

a. Amplitude Modulation.
b.Frequency Modulation.
c.Pulse Modulation.
d.Velocity modulation.

5.In multicavity Klystron additional cavities are inserted between
buncher and catcher cavities to achieve-

a.Higher Gain
b.Higher Efficiency
c.Higher Frequency
d.Higher Bandwidth

6.The modes in the reflex Klystron -

a. give same frequency but different transit time.
b.are caused by spurious frequency modulation.
c.are just for theoretical consideration.
d.result from excessive  transit time across resonator gap.

7.A reflex Klystron function as

a. Microwave Oscillator.
b.Amplifier
c.Phase shifter
d.Both amplifier and phase shifter

8.A space between two cavities in two cavity klystron is

a.Drift space
b.Free space
c.Running apce
d.Normal space

9. Magnetron is an

a. Amplifier
b.Oscillator
c. Phase shifter
d.Both phase shifter and amplifier

10.TWT is

a.Oscillator
b. Tuned Amplifier
c. Wide band Amplifier.
d.Both amplifier and Oscillator