Electronics DC Circuits Semester Exam
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Learn about the electronics DC Circuits, parallel series circuits, voltages, Ohm's Law among other Physical concepts in the quiz below. Take it up and gauge your mastery on this interesting subject. All the best and enjoy.
- 1.What type of circuit combines one or more series circuits with one or more parallel circuits?
- A.
Simple
- B.
Series
- C.
Series-parallel
- D.
Parallel
- 2.The first step in calculating voltage drops in a series-parallel circuit is to determine ?
- A.
The resistance of hte parallel resistors
- B.
The resisistance of the series resitors
- C.
Total Current
- D.
Total Voltage
- 3.Ohm’s Law states that current is _____.
- A.
Inversely proportional to power
- B.
Directly proportional to voltage
- C.
Inversely proportional to voltage
- D.
Directly proportional to resistance
- 4.What symbol represents power?
- A.
P
- B.
V
- C.
I
- D.
R
- 5.What happens to current when voltage increases?
- A.
Decreases
- B.
Increases
- C.
Remains the Same
- D.
Who Cares
- 6.What is the unit of measure for power?
- A.
Ampere
- B.
Volt
- C.
Watt
- D.
Ohm
- 7.Current in a series circuit .
- A.
Varies
- B.
Increases at different points
- C.
Decreases at different points
- D.
Is the same at all points
- 8.What effect on total curret flow will a shorted series component have in a series-paralle circuit?
- A.
Total current will stop
- B.
There will be no effect
- C.
Total current will increase
- D.
Total current will decrease
- 9.What is the fourth step of the troubleshooting procedure?
- A.
Check the setup
- B.
Check the results
- C.
Analyze the circuit
- D.
Calculate and measure values
- 10.What would cause a component to drop the applied voltage?
- A.
A decrease in value
- B.
An increase in Value
- C.
A Short
- D.
An Open
- 11.Electrical shock occurs when and individual touches .
- A.
Electrical Equipment
- B.
Ground and Circuit
- C.
Electrical Components
- D.
Power Supplies
- 12.In the event of electrical shock, the rescuer should first
- A.
Perform CPR
- B.
Call for medical help and remove the victim from the electrical source
- C.
Check for breathing
- D.
Call for help
- 13.Burns cause by electrical current flowing through the body tissue and bones are called
- A.
Arc Burns
- B.
Thermal Contact Burns
- C.
Electrical Burns
- D.
Shock Burns
- 14.An electrostatic discharge passing throuh an ESD could cause catastrophic failure, major electrical characteristic changes, or performance degradation in the device.
- A.
True
- B.
False
- 15.Subtract (4M) - (2M)
- A.
2M
- B.
4M
- C.
6M
- D.
8M
- 16.What keeps an electron in orbit around the nucleus?
- A.
More electrons than protons
- B.
Electrostatic force and electrons spinning
- C.
Less protons than electrons
- D.
Electrostatice force and protons spinning
- 17.Electrical shock occurs when an individual touches .
- A.
Electrical Equipment
- B.
Ground and Circuit
- C.
Electrical Components
- D.
Power Supplies
- 18.Convert .00004 to metric prefix.
- A.
40 Micro
- B.
40 Milli
- C.
4 Micro
- D.
4 Milli
- 19.Convert 10000 to metric prefix
- A.
10 Kilo
- B.
10 Mega
- C.
100 Kilo
- D.
100 Mega
- 20.What causes the nucleus of an atom to be positively charged?
- A.
Neutrons
- B.
Electrons
- C.
Protons
- D.
Positrons
- 21.What causes an overload condition when you are measuring resistance?
- A.
Range switch set to high for resistance to be measured
- B.
Range switch set to low for resistance to be measured
- C.
Test leads connected to multimeter incorrectly
- D.
Incorrect function selected for value being measured
- 22.Which of the following answers best describes a normally closed switch?
- A.
A switch that cannot be opened
- B.
A switch that once closed, remains closed until it is unlatched by voltage
- C.
A switch that remains open until manually closed
- D.
A switch that remains closed until manually opened
- 23.Which switch rotates on a shaft?
- A.
Slide
- B.
Toggle
- C.
Rotary
- D.
Push Button
- 24.Define Permeability
- 25.What material is affected most by flux lines?
- A.
Wood
- B.
Glass
- C.
Steel
- D.
Aluminum
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