Ultra High Frequency Lines – 1 – 1

1. A shorted or opened line will have a reflection coefficient of :

(a) Zero
(b) One
(c) 100
(d) Infinite

ANSWER
Answer : (b)

EXPLANATION
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2. _______ can be placed at either end of a transmission line to convert between 72Ω unbalanced line to a 300Ω balance line :

(a) Stub
(b) Resonant circuit
(c) Balun
(d) Coupler

ANSWER
Answer : (c)

EXPLANATION
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3. When does a transmission line terminated in a short, look like a short to the source ?

(a) At quarter-wavelength
(b) At half-wavelength
(c) At less than λ/5
(d) At less than λ/4

ANSWER
Answer : (a)

EXPLANATION
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4. Who developed the Smith Chart ?

(a) Philip S. Chart
(b) James N. Smith
(c) Philip H. Smith
(d) Gunn Chart

ANSWER
Answer : (c)

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

5. For a parallel resonant circuit, a λ / 4 stub must be _____ at the ends.

(a) Open
(b) Shorted
(c) Loaded
(d) complex

ANSWER
Answer : (b)

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

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