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ASSIGNMENT 3
Textbook assignment: Chapter 3, “Principles of Transmission Lines,” pages 3-1 through 3-58.
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3-1. A transmission line is designed to perform
which of the following functions?
1. Disperse energy in all directions
2. Detune a transmitter to match the load
3. Guide electrical energy from point to
point
4. Replace the antenna in a
communications system
3-2. All transmission lines must have two ends,
the input end and the output end. What
other name is given to the input end?
1. Sending end
2. Generator end
3. Transmitter end
4. Each of the above
3-3. A measurement of the voltage to current
ratio (Ein/I
in) at the input end of a
transmission line is called the
1. input-gain rate
2. input impedance
3. output impedance
4. voltage-gain ratio
3-4. Which of the following lines is NOT a
transmission medium?
1. Load line
2. Coaxial line
3. Two-wire line
4. Twisted-pair line
3-5. Electrical power lines are most often made
of which of the following types of
transmission lines?
1. Twin-lead line
2. Shielded-pair line
3. Two-wire open line
4. Two-wire ribbon line
3-6. Uniform capacitance throughout the
length of the line is an advantage of which
of the following transmission lines?
1. Coaxial line
2. Twisted pair
3. Shielded pair
4. Two-wire open line
3-7. What is the primary advantage of a rigid
coaxial line?
1. Low radiation losses
2. Inexpensive construction
3. Low high-frequency losses
4. Each of the above
3-8. Which of the following wave-guides is
seldom used because of its large energy
loss characteristics?
1. Metallic
2. Dielectric
3. Elliptical
4. Cylindrical
3-9. To some degree, transmission lines always
exhibit which of the following types of
losses?
1. I2R
2. Inductor
3. Dielectric
4. Each of the above
3-10. Skin effect is classified as which of the
following types of loss?
1. Copper
2. Voltage
3. Induction
4. Dielectric
