Sierra College CIE Jim Weir

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CIE-1 Quiz 4

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1: The ancient word for capacitor was: resistor
condenser
integrator
disseminator
2: A capacitor is two __________ separated by a(n) ___________: insulators, conductor
conductors, inductor
conductors, insulator
integrator, conductor
3: A capacitor stores energy in a(n): electric field
magnetic field
force field
corn field
4: A capacitor stores ________ and passes _________: force fields, all electricity
magnetism, AC and blocks DC
charge, DC and blocks AC
charge, AC and blocks DC
5: To increase the capacitance you would ___________ the size of the plates and __________ the distance between them: decrease, increase
increase, decrease
decrease, decrease
increase, increase
6: you have a capacitor with aluminum plates and air dielectric that measures 100 picofarads. If you drop the capacitor into a bucket of gasoline, the capacitor would then measure very nearly __________ picofarads: 400
300
200
100
7: The capacitor with the largest capacitance in the smallest size is the: electrolytic
ceramic
glass
alumina
8: You have two gum wrappers, each having an area of 5 square inches. You have a 0.001 inch thick mylar sandwich bag to use as the insulator. What is the approximate capacitance of this combination.: 129 nanofarads
500 picofarads
2.2 nanofarads
220 nanofarads
9: A capacitor attempts to: increase the voltage
keep the voltage constant
keep the current constant
decrease the current
10: We can use a capacitor to: strip noise from a circuit
set the frequency of oscillation
tune a radio
all of the above
11: A capacitor (actually any electronic component) with an arrow through it denotes a _____________ value component: zero
variable
unknown
infinite
12: We say that "high" voltages start at ________ volts and above: 30
60
90
120
13: An inductor is nothing more than a(n): series of plates
iron lamination
coil of wire
metal strip
14: An inductor attempts to: keep the current constant
keep the voltage constant
decrease the voltage
increase the current
15: Resonance occurs when: the circuit is tuned properly
The series resistance is equal to either the capacitive or inductive reactance
the inductive and capacitive reactances are equal
the transmogrifiers have been assimilated
16: In series resonance the circuit has a __________ impedance and in parallel resonance the circuit has a __________ impedance: maximum, maximum
minimum, minimum
maximum, minimum
minimum, maximum
17: Antennas depend on the ____________ principle: heisenberg
quarter wave
yagi
dipole
18: Nevada County Airport operates on a frequency of 122.725 MHz. To cut one ear of a dipole (quarter wave) you would have an element how long (inches)?: 12
18
24
96
19: That dipole in question 18 is also a good antenna on what approximate frequency (MHz.): 245
368
491
736
20: An oscilloscope is: a way of drawing a two-axis graph
capable of amplifying a signal so that you can hear it
of little use in practical electronics
incapable of measuring voltage
21: One of the most useful things on an oscilloscope is: a timebase generator to sweep the beam in the x-direction
22: The input impedance of the oscilloscope with the probe in the x10 position is about: 10 kohms
100 kohms
1 Megohm
10 Megohms
23: With the signal generator of the trainer, you can: all the below
get many audio frequencies
get sine, square, and triangle waves
drive your lab partners crazy
24: You measure peak to peak voltage: from the left to the right of a waveform
from the top to the bottom of a waveform
from the top of the waveform to the center
from the bottom of the waveform to the center.
25: What is the time constant of a 100 nanofarad capacitor and 100 kohm resistor: 1 millisecond
5 milliseconds
10 milliseconds
15 milliseconds