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Electronics 2
Test Description: Final review 2
Instructions: Answer all questions to get your test result.
1) 27. The earth is used as a ground and has a __________________ charge.
A
Positive
B
Nuetral
C
Negative
2) Current can flow in two or more paths or directions in a ___________ circuit
A
Series
B
Parallel
C
Both
3) A load in a circuit is?
A
none of the above
B
The component it is operating
C
The power source
D
The path the electrons take
4) A dry cell produces ________ current.
A
Staitc Current
B
Alternating Currrent
C
Direct Current
D
Dynamic Current
5) The opposition to the flow of electrons is known as ________________.
A
Resistance
B
Current
C
EMF
D
Capacitance
6) Switches, fuses and circuit breakers are all hooked up in a circuit in __________________.
A
Parallel-Series
B
Parallel
C
Series
D
Series-Parallel
7) What color is a good soldered connection?
A
Yellow
B
Gold
C
Silver
D
Brown
8) What does a good soldered connection look like on a circuit board (shape)?
A
Cone
B
Cone with a stick in the center
C
Sphere
D
Square
9) Electrons at rest around an object can build-up pressure and then jump to a positively charged object is an example of ____________electricity.
A
Current
B
Electrostatic
C
Static
D
Dynamic
10) Capacitance is the ability of a circuit to store ______________
A
Protons
B
Electricity
C
Electrons
D
Answers 2 and 3
11) Capacitance is measured in __________.
A
Watts
B
Ohms
C
Farads
D
Volts
12) The most important electronic component in a circuit that rectifies current is a
A
Rectifier
B
Diode
C
Capactior
D
Transistor
13) The function of a transistor in an electrical circuit is to __________________.
A
Act as a timer
B
Dim the light
C
Rectifiy a current
D
Amplify voltages
14) How many milliamps are there in on amp?
A
1000000
B
10000
C
100
D
1000
15) What does the Voltage measure in a circuit when the amperage measures 6 and the resistance measures 10?
A
60
B
1.666
C
3
D
.6
16) The value of a resistor is determined by the ________________?
A
the color code
B
How well it works
C
Unit printed on it
D
the physical size of it
17) What is the name of the number system used in digital electronics?
A
Digital System
B
Base Two System
C
Binary System
D
Logic System
18) If a switch in opened in a circuit. The logic number would be a __________ and that circuit would be turned _________.
A
0 and on
B
1 and on
C
1 and off
D
0 and off
19) Convert this digital number into binary 58.
A
1010100
B
111010
C
1111101
D
00111010
20) Convert this Binary number into digital 10101101
A
89
B
175
C
173
D
128
*select an answer for all questions
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