Klystron oscillators are most often used in the frequency range of
A. 300 to 3000 MHz
B. 3000 to 30000 MHz
C. 30 to 30000 MHz
D. 10 to 10000 MHz
Answer: Option B
Coupling into and out of a traveling-wave tube can be accompanied by a
A. Waveguide match
B. Cavity match
C. Direct coax-helix match
D. All of the above
A. A long time constant
B. Low-pass filters
C. The shortest possible time
D. The restricted high-frequency response
A. $${\text{S}} = \frac{{2\lambda {\text{R}}}}{{\text{L}}}$$
B. $${\text{S}} = \frac{{3\lambda {\text{R}}}}{{\text{L}}}$$
C. $${\text{S}} = \frac{{\lambda {\text{R}}}}{{\text{L}}}$$
D. $${\text{S}} = \frac{{\text{L}}}{{\lambda {\text{R}}}}$$
The aquadag coating on the inside of PPI tube is used
A. To focus the beam of primary electrons
B. To shield the electron beam from unidirectional magnetic
C. As a second anode and to prevent the build-up of secondary field
D. All of these
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