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Transmission Line Theory – 1 – 2

6. When mismatch is great, this power actually cause damage to the transmitter or the line itself.

(a) The incident power
(b) The reflected power
(c) The power dissipation
(d) The carrier power

ANSWER

EXPLANATION

7. Determine the characteristic impedance of a transmission line  which has a capacitance of 30 pF/m and an inductance of 75 nH/m :

(a) 5 Ω
(b) 50 Ω
(c) 500 Ω
(d) 5 KΩ

ANSWER

EXPLANATION

8. At UHF and microwave frequencies, transmission lines are commonly used as :

(a) Antenna
(b) Coupler
(c) Resonant circuit
(d) Transformer

ANSWER

EXPLANATION

9. The time required for a wave to propagate on a transmission line will depend on the value of its :

(a) Series resistance and shunt conductance
(b) Series inductance and shunt capacitance
(c) Series resistance and series inductance
(d) Shunt conductance and shunt capacitance

ANSWER

EXPLANATION

10. A measure of how the voltage or current decreases with distance along the line :

(a) Propagation constant
(b) Attenuation constant
(c) Phase constant
(d) SWR

ANSWER

EXPLANATION

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