2-26. What oscillator uses split capacitors for
4. RC phase-shift
TO ANSWER QUESTIONS 2-27 THROUGH
2-29, SELECT THE CONFIGURATIONS IN
COLUMN B THAT MATCH THE AMPLIFIER
CHARACTERISTICS IN COLUMN A.
CHOICES IN COLUMN B MAY BE USED
ONCE, MORE THAN ONCE OR NOT AT ALL.
2-27. Voltage gain is
less than unity
2-28. Low power gain
2-29. Feedback signal
2-30. Which of the following statements best
describes tank current in a series-fed
1. The dc path is through the tank circuit
2. The dc path does not go through the
3. The ac path is through the tank circuit
4. The ac path does not go through the
2-31. In a shunt-fed, tuned-collector Armstrong
oscillator, what blocks the dc component
from the tank circuit?
1. A resistor
2. A capacitor
3. An inductor
4. A transistor
2-32. Which of the following circuit
arrangements aid in the frequency stability
of an oscillator?
1. A regulated power supply
2. A common bias source for the emitter
3. Both 1 and 2 above
4. Separate bias sources
Figure 2A.Tuned-base Armstrong oscillator.
IN ANSWERING QUESTIONS 2-33
THROUGH 2-37, REFER TO FIGURE 2A.
2-33. The frequency of the output signal of the
oscillator is determined by what
1. R1 and L1
2. L2 and C1
3. L3 and C4
4. R3 and C3
2-34. Forward bias for the amplifier is
developed by what component?