1
ASSIGNMENT 1
Textbook assignment: Chapter 1, “Waveguide Theory and Applications,” pages 1-1 through 1-68.
_________________________________________________________________________________
1-1. The portion of the electromagnetic
spectrum which falls between 1,000 and
100,000 megahertz is referred to as
which of the following regions?
1. X-ray
2. Infrared
3. Microwave
4. Ultra-violet
1-2. Microwave theory is based on the action
of which of the following fields?
1. Electric field only
2. Magnetic field only
3. Electromagnetic field
1-3. Coaxial lines are more efficient than
two-wire lines at microwave frequencies
for which of the following reasons?
1. Because electromagnetic fields are
completely confined in coaxial lines
2. Because electromagnetic fields are
not completely confined in coaxial
lines
3. Because coaxial lines have less
resistance to current flow than
two-wire transmission lines
4. Each of the above
1-4. The most efficient transfer of
electromagnetic energy can be provided
by which of the following mediums?
1. Waveguides
2. Twin-lead flat lines
3. Single-conductor lines
4. Coaxial transmission lines
1-5. Copper (I2R) losses are reduced by what
physical property of waveguides?
1. Small surface area
2. Large surface area
3. Shape of the waveguide
4. Waveguide material used
1-6. In a coaxial line, the current-carrying
area of the inner conductor is restricted to
a small surface layer because of which of
the following properties?
1. Skin effect
2. Copper loss
3. Conductor density
4. Temperature effect
1-7. Which of the following dielectrics is
used in waveguides?
1. Air
2. Mica
3. Insulating oil
4. Insulating foam
1-8. Which of the following characteristics of
a waveguide causes the lower-frequency
limitation?
1. I2R loss
2. Physical size
3. Wall thickness
4. Dielectric loss
