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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 component it is operating
B
The power source
C
The path the electrons take
D
none of the above
4) A dry cell produces ________ current.
A
Direct Current
B
Alternating Currrent
C
Staitc Current
D
Dynamic Current
5) The opposition to the flow of electrons is known as ________________.
A
Resistance
B
EMF
C
Capacitance
D
Current
6) Switches, fuses and circuit breakers are all hooked up in a circuit in __________________.
A
Parallel-Series
B
Series
C
Parallel
D
Series-Parallel
7) What color is a good soldered connection?
A
Brown
B
Yellow
C
Gold
D
Silver
8) What does a good soldered connection look like on a circuit board (shape)?
A
Sphere
B
Cone with a stick in the center
C
Square
D
Cone
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
Dynamic
B
Static
C
Current
D
Electrostatic
10) Capacitance is the ability of a circuit to store ______________
A
Electricity
B
Protons
C
Answers 2 and 3
D
Electrons
11) Capacitance is measured in __________.
A
Farads
B
Ohms
C
Watts
D
Volts
12) The most important electronic component in a circuit that rectifies current is a
A
Diode
B
Rectifier
C
Transistor
D
Capactior
13) The function of a transistor in an electrical circuit is to __________________.
A
Rectifiy a current
B
Dim the light
C
Amplify voltages
D
Act as a timer
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
.6
C
1.666
D
3
16) The value of a resistor is determined by the ________________?
A
the physical size of it
B
the color code
C
Unit printed on it
D
How well it works
17) What is the name of the number system used in digital electronics?
A
Binary System
B
Logic System
C
Base Two System
D
Digital 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
00111010
B
1111101
C
111010
D
1010100
20) Convert this Binary number into digital 10101101
A
175
B
89
C
128
D
173
*select an answer for all questions
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