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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
Parallel
B
Both
C
Series
3) A load in a circuit is?
A
The power source
B
The path the electrons take
C
The component it is operating
D
none of the above
4) A dry cell produces ________ current.
A
Staitc Current
B
Direct Current
C
Dynamic Current
D
Alternating Currrent
5) The opposition to the flow of electrons is known as ________________.
A
Current
B
EMF
C
Resistance
D
Capacitance
6) Switches, fuses and circuit breakers are all hooked up in a circuit in __________________.
A
Series-Parallel
B
Series
C
Parallel-Series
D
Parallel
7) What color is a good soldered connection?
A
Gold
B
Brown
C
Yellow
D
Silver
8) What does a good soldered connection look like on a circuit board (shape)?
A
Sphere
B
Square
C
Cone
D
Cone with a stick in the center
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
Electricity
B
Electrons
C
Answers 2 and 3
D
Protons
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
Capactior
C
Transistor
D
Diode
13) The function of a transistor in an electrical circuit is to __________________.
A
Dim the light
B
Rectifiy a current
C
Act as a timer
D
Amplify voltages
14) How many milliamps are there in on amp?
A
1000000
B
100
C
1000
D
10000
15) What does the Voltage measure in a circuit when the amperage measures 6 and the resistance measures 10?
A
1.666
B
3
C
60
D
.6
16) The value of a resistor is determined by the ________________?
A
the physical size of it
B
How well it works
C
the color code
D
Unit printed on it
17) What is the name of the number system used in digital electronics?
A
Logic System
B
Binary 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
0 and on
B
1 and on
C
0 and off
D
1 and off
19) Convert this digital number into binary 58.
A
111010
B
00111010
C
1010100
D
1111101
20) Convert this Binary number into digital 10101101
A
89
B
128
C
175
D
173
*select an answer for all questions
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