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ASSIGNMENT 2
Textbook assignment: Chapter 2, “Microwave Principles,” pages 2-1 through 2-66. Chapter 3,
“Microwave Antennas,” pages 3-1 through 3-20.
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2-1. As the frequency in a conventional
vacuum tube is increased, what is the
effect on the capacitive reactance of the
tube?
1. It increases
2. It decreases
3. It remains the same
2-2. Undesirable degenerative feedback in
conventional vacuum tubes can be
caused by which of the following tube
factors?
1. Grid bias
2. Transit time
3. Plate voltage
4. Lead inductance
2-3. A decrease in efficiency in a
conventional vacuum tube caused by a
phase shift between plate current and
grid voltage can be the result of
excessive
1. transit time
2. lead inductance
3. capacitive reactance
4. interelectrode capacitance
2-4. Moving tube electrodes further apart to
decrease interelectrode capacitance
causes which of the following tube
characteristics to increase?
1. Transit time
2. Lead inductance
3. Inductive reactance
4. Capacitive reactance
2-5. Which of the following properties of an
electron is directly proportional to its
velocity?
1. Mass
2. Kinetic energy
3. Potential energy
4. All of the above
2-6. An electron that enters an electrostatic
field and travels in the same direction as
the lines of force will react in what way?
1. It will accelerate
2. It will decelerate
3. It will spin faster
4. It will spin slower
2-7. The alternate speeding up and slowing
down of electrons in a beam that
produces electron bunches is known as
which of the following modulation
terms?
1. Carrier modulation
2. Velocity modulation
3. Amplitude modulation
4. Frequency modulation
2-8. How is an electron affected, if at all, if it
enters the buncher-grid gap when the
potential across the grids is positive?
1. It is deflected
2. It is accelerated
3. It is decelerated
