True/False
Indicate whether the sentence or statement is true
or false.
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1.
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Microwave-frequency circuits look much different from circuits designed for 1
MHz.
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2.
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Basically, radio-frequency amplifiers can not be distinguished from other
amplifiers.
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3.
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The
Miller Effect can be reduced using neutralization.
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Multiple Choice
Identify the
letter of the choice that best completes the statement or answers the question.
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4.
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A
resonant circuit is: a. | a simple form of bandpass
filter | c. | both a and
b | b. | used in
narrowband RF amplifiers | d. | none of the
above | | | | |
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5.
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Loading down a tuned-circuit amplifier will: a. | raise the Q of
the tuned circuit | c. | "multiply" the Q | b. | lower the Q of the tuned
circuit | d. | have no effect
on Q | | | | |
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6.
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The
"Miller Effect" can: a. | cause an amplifier to oscillate | c. | reduce the bandwidth of an amplifier | b. | cause an
amplifier to lose gain | d. | all of the
above | | | | |
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7.
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In RF
amplifiers, impedance matching is usually done with: a. | RC
coupling | c. | direct
coupling | b. | transformer coupling | d. | lumped reactance | | | | |
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8.
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For a
"frequency multiplier" to work, it requires: a. | a nonlinear
circuit | b. | a linear amplifier | c. | a signal
containing harmonics | d. | an input signal that is an integer multiple of the desired
frequency | | |
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9.
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A
sinusoidal oscillation from an amplifier requires: a. | loop gain equal
to unity | b. | phase shift around loop equal to 0
degrees | c. | both a and b, but at just one
frequency | d. | none of the above | | |
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10.
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The
Clapp oscillator is: a. | a modified Hartley oscillator | c. | a type of crystal-controlled
oscillator | b. | a modified Colpitts oscillator | d. | only built with FETs | | | | |
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