All RF Cafe quizzes would make perfect fodder for employment interviews for technicians or engineers
- particularly those who are fresh out of school or are relatively new to the work world. Come to
think of it, they would make equally excellent study material for the same persons who are going to
be interviewed for a job.
Some of these books used in quizzes are available as prizes
in the monthly RF Cafe Giveaway.
Note: Many answers contain passages quoted in whole or in part from the text.
This particular quiz tests your
knowledge of basic circuit theory. Choose the best answer for the spirit
of the quiz; i.e., the one that represents the newer term or the abandoned definition.
circuit law states that the sum of all currents into and out of a node equals zero?
a) Norton's Current Law
b) Chebyshev's Current Law
c) Kirchhoff's Current Law
d) Lenz's Current Law
2. How much power
is dissipated by an ideal 100 pF capacitor fed by a 1 Vpk-pk sinewave at 10 MHz? Hint: Z = 1/(2πfC)
a) 12.5 mW
b) 6.28 mW
c) 1.0 mW
d) 0 mW
3. What causes a ground current loop?
a) A coil of wire
b) A open ground point
c) More than one ground potential in a circuit
d) A single
ground potential in a circuit
4. What type of filter
does this circuit represent?
many poles does the filter in Q4 have?
What is the configuration of the opamp shown here?
What is the secondary voltage of this transformer?
a) 20 V
b) 10 V
c) 5 V
d) 2 V
8. What is the
impedance of the transformer secondary in Q7?
a) 100 Ω
b) 20 Ω
c) 10 Ω
d) 4 Ω
9. In an ideal system, what is the minimum sampling rate to prevent aliasing of a signal with a
maximum frequency of 100 kHz?
a) 1 MHz
b) 200 kHz
c) 100 kHz
d) 10 kHz
type of diode typically has the lowest forward bias voltage for a given current?
a) Gallium Arsenide (GaAs)
b) Germanium (Ge)
c) Silicon (Si)
d) Silicon Schottky
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