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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
Negative
C
Nuetral
2) Current can flow in two or more paths or directions in a ___________ circuit
A
Series
B
Both
C
Parallel
3) A load in a circuit is?
A
The component it is operating
B
The path the electrons take
C
none of the above
D
The power source
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
Current
B
EMF
C
Capacitance
D
Resistance
6) Switches, fuses and circuit breakers are all hooked up in a circuit in __________________.
A
Parallel-Series
B
Series-Parallel
C
Parallel
D
Series
7) What color is a good soldered connection?
A
Gold
B
Brown
C
Silver
D
Yellow
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
Square
D
Sphere
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
Electrostatic
B
Current
C
Dynamic
D
Static
10) Capacitance is the ability of a circuit to store ______________
A
Answers 2 and 3
B
Protons
C
Electrons
D
Electricity
11) Capacitance is measured in __________.
A
Ohms
B
Farads
C
Watts
D
Volts
12) The most important electronic component in a circuit that rectifies current is a
A
Rectifier
B
Diode
C
Transistor
D
Capactior
13) The function of a transistor in an electrical circuit is to __________________.
A
Amplify voltages
B
Rectifiy a current
C
Dim the light
D
Act as a timer
14) How many milliamps are there in on amp?
A
10000
B
1000
C
1000000
D
100
15) What does the Voltage measure in a circuit when the amperage measures 6 and the resistance measures 10?
A
.6
B
3
C
60
D
1.666
16) The value of a resistor is determined by the ________________?
A
the color code
B
Unit printed on it
C
How well it works
D
the physical size of it
17) What is the name of the number system used in digital electronics?
A
Binary System
B
Logic System
C
Digital System
D
Base Two System
18) If a switch in opened in a circuit. The logic number would be a __________ and that circuit would be turned _________.
A
1 and on
B
0 and off
C
1 and off
D
0 and on
19) Convert this digital number into binary 58.
A
1010100
B
00111010
C
1111101
D
111010
20) Convert this Binary number into digital 10101101
A
89
B
175
C
128
D
173
*select an answer for all questions
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