Microwave Linear Beam Tubes – 1 – 2

6. The main advantage of a TWT over a klystron for microwave amplification is :

(a) lower cost
(b) smaller size
(c) higher power
(d) wider bandwidth

Answer
Answer : (d)

Explanation
No answer description available for this question. Let us discuss.

7. In a TWT, the electron beam is density-modulated by a :

(a) permanent magnet
(b) modulation transformer
(c) helix
(d) cavity resonator

Answer
Answer : (c)

Explanation
No answer description available for this question. Let us discuss.

8. High-power TWTs are replacing what in microwave amplifiers ?

(a) MESFETs
(b) magnetrons
(c) klystrons
(d) IMPATT diodes

Answer
Answer : (c)

Explanation
No answer description available for this question. Let us discuss.

9. Attenuator is used in the traveling wave tube to :

(a) prevent oscillation
(b) increase gain
(c) prevent saturation
(d) all of these

Answer
Answer : (a)

Explanation
No answer description available for this question. Let us discuss.

10. At what position is the input signal inserted into a traveling-wave tube ?

(a) at the cathode end of the helix
(b) at the collector
(c) at the collector end of the helix
(d) at the control grid of the electron gun

Answer
Answer : (a)

Explanation
No answer description available for this question. Let us discuss.

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