Post Lab Exercise-1
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by V Kshirsagar
| 15 Questions
Note from the author:
Post laboratory exercise in Microwave engineering undergraduate level
1
1
Reflex Klystron tube is an -
Amplifier
Resonator
Oscillator
Semiconductor
2
2
Explain the role of repeller voltage in the operation of Reflex Klystron tube.
3
2
What is difference between modulation characteristics and mode study of Reflex klystron tube?
4
1
Bunching process will be initiated when -
repeller voltage is just applied
repeller voltage is only maximum
repeller voltage is only minimum
certain specific values of repeller voltages are applied
5
2
What is meant by Electronic Tuning Range (ETR) of Reflex klystron tube?
6
2
Explain in brief how can we measure generated microwave frequency with Reflex klystron tube.
7
2
What is difference between Gunn diode and ordinary PN junction diode?
8
2
Explain what is the significance of negative resistance operation?
9
1
Negative resistance phenomenon is observed in following semiconductor material -
Silicon
Gallium Arsenide
Germanium
Carbon
10
2
Explain how modulation depth is determined for PIN diode signal in the experiment of Gunn diode?
11
2
What are four important characteristics of directional couplers?
12
2
Why it is expected to have maximum values of directivity and isolation for any coupler?
13
2
How the sampling rate is decided in directional coupler?
14
2
What different directional couplers we have studied in our experiment?
15
2
What value of threshold voltage is observed for the Gunn diode in order to enter it into negative resistance region? What is typical value of exhibited negative resistance?
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