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CIE-10 Quiz 2

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1: The answer on your calculator is 4700. Pushing the ENG button gives the following result:

4700E3
4.7E6
4.7E3
470E1

2: The correct sequence of entering commands into a calculator to put in the value for a 100k ohm resistor is:

1000000
100 EXP 3
100 ENG 3
1 ENG 6

3: You tell me that the voltage at test point A is 72 volts. What is wrong with that statement?

72 volts is too high for semiconductor circuits.
72 volts cannot be made with batteries
No information on how much current is being used.
No information on "with respect to".

4: An AMPERE is defined as

6.24E18 electrons passing by a point in the circuit per second.
A thousand microamperes.
624E16 electrons collected at one point and not moving.
Resistance divided by voltage

5: The unit of resistance (the ohm) is defined as

a particular length of wire connected to a battery
the relationship of voltage to current in a circuit
The relationship of a coulomb to an ampere
The amount of electrons going by a particular point in the circuit per second.

6: Watts price for a steam engine was based on

steam pressure
cost to build the engine
number of levers in the engine
horses

7: You have a 1.5 kilowatt electric heater that you use for two hours every day. At 18c per kilowatt hour, and a 30 day month, how much does it cost you to use your heater per month?

$16.20
$8.10
$24.30
It cannot be calculated from the information given.

8: The power coming out of the wall socket is

DC square wave
AC modified sine wave
AC sine wave
AC square wave

9: How many watts in a kilowatt?

1E6
500
100
1E3

10: If you were to draw a diagram of the circuit of a computer, you would use

a pictorial drawing.
a schematic drawing.
an engineering sketch.
pen and ink.

11: The 23rd transistor in a circuit would probably be labeled

T23
U23
Q23
X23

12: Today's standard multimeter is

digital
analog
moving coil
moving magnet

13: A voltmeter measures in ??? while an ammeter measures in ??? ?

series, parallel
ohms, volts
amperes, watts
parallel, series

14: The color code for a 180k ohm 5% resistor is

brown, gray, black, gold
brown, gray, yellow, gold
brown, gray, brown, gold
brown, gray, yellow, silver

15: The special formatting of a spreadsheet cell ##0.0E+0 gives

percentage notation
scientific notation
engineering notation
cell notation

16: The +5 to 15 volt variable power supply on the trainer is color-coded

red
yellow
blue
black

17: The "flat" side on an LED skirt denotes the

cathode
anode
top
side

18: Resistor color code: brown, green, red, gold

15k ohm 5%
150 ohm 5%
150k ohm 5%
1.5 k ohm 5%

19: We measured LED voltages in Lab 2 with a current of

2 milliamperes
20 milliamperes
200 milliamperes
2 amperes

20: Which resistor can you NOT buy (5% values)

1.8k ohm
150k ohm
410 ohm
22 ohm

21: A resistor placed across a 9 volt battery causes a 20 mA current flow. The resistor is most probably

470 ohms
220 ohms
2.2 ohms
1k ohm

22: A 12 volt battery and 82 ohm resistor cause how much current to flow?

145 microamperes
1.45 milliamperes
6.83 milliamperes
145 milliamperes

23: Most common resistors are made from

silicon
gallium arsenide
carbon
cadmium sulfide

24: Spreadsheet: The value for current (I) has been put into cell D5. The value for voltage has been put into cell D7. To have the spreadsheet automatically calculate resistance, you would enter the following into cell D9:

=D5/D7
=D7/D5
D5/D7
D7/D5

25: Spreadsheet: If you want to enter 5% tolerance for a resistor in Cell C3, you would put the following constant into this cell:

.005
.05
.5
5

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