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Basic Electricity

Instructions:

Answer 50 questions in 15 minutes.
If you are not ready to take this test, you can study here.
Match each statement with the correct term.
Don't refresh. All questions and answers are randomly picked and ordered every time you load a test.

This is a study tool. The 3 wrong answers for each question are randomly chosen from answers to other questions. So, you might find at times the answers obvious, but you will see it re-enforces your understanding as you take the test each time.

1. What is a characteristic of insulators?
High dielectric and mechanical strength - tempurature and moisture resistance - flexible(All of the above)
Serial
Tolerence
Start with the band on the end and read to the center

2. What is a conductor?
Tolerence
Amperes
A material capable of carrying an electric current Silver - Copper - and Aluminum(Both A and C)
Energy

3. What is the term used when a magnetic field produced by coil 1 created a current in coil 2?
The direction the negative charge moves
Stores electrical charge
Cables
Mutual induction

4. Which of the following is a type of resistor?
Stranded
High dielectric and mechanical strength - tempurature and moisture resistance - flexible(All of the above)
15 -000 ohms - 20%
Fixed - tapped - variable(all of the above)

5. How is capacitance determined?
Area and spacing of capacitor - static current in the capacitor(both A and B)
Opposition to electrical current
Resistance increases as the conductor length increases
Breakdown voltage

6. The generator is what method of creating potential energy?
High dielectric and mechanical strength - tempurature and moisture resistance - flexible(All of the above)
Electromagnetism
Stores electrical charge
Evenly over the surface of a sphere and concentrated on points of objects(both A and C)

7. What is a type of capacitor?
Bonding and grounding
Magnetism produces a field and the field exerts force on a moving charge - every moving electrical charge produces a magnetic field - and the magnetic field is strong when the electrical charge is strong and moves rapidly(all of the above are true)
Fixed - Electrolytic - Variable(all of the above)
First digit

8. What is the use of the electromagnet?
Lifting devices - chucks and clutches - brakes and pulleys(all of the above)
Series circuit
Opposes any change in the current flowing in a circuit
Start with the band on the end and read to the center

9. What is a DC circuit characteristic?
To prevent Physical - Chemical to wiring - to prevent damage to people and property(all of the above)
Battery
Current flows in one direction - potential differences across a load does not change(Both A and B)
Gauge number

10. What is the purpose of a raceway?
To prevent Physical - Chemical to wiring - to prevent damage to people and property(all of the above)
Means to maintain a potential difference - means to generate spark - spark in a flammable atmosphere(all of the above)
Bonding and grounding
Ability to store an electric charge

11. Where do the fingers point in both Left-Hand Rules?
To prevent Physical - Chemical to wiring - to prevent damage to people and property(all of the above)
Bare - covered - insulated - stranded - cable(All of the above)
The direction of the magnetic field
Battery

12. What do junction boxes protect?
From the negative battery terminal to the positive terminal
Volts
Choke
Wire splices

13. What types of protective tapes are used?
Area and spacing of capacitor - static current in the capacitor(both A and B)
Electromagnetism
Plastic - Rubber - Friction(all of the above)
Moving vehicles

14. What is the unit of measurement of electrical current?
High dielectric and mechanical strength - tempurature and moisture resistance - flexible(All of the above)
20%
Battery
Amperes

15. What is the fundamental property of insulators?
High dielectric and mechanical strength - tempurature and moisture resistance - flexible(All of the above)
Insulation resistance and Dielectric strength(Both A and B)
Resistance value can not be changed
Voltage

16. What is the unit of measurement of potential difference?
Voltage
Cables
Volts
Stores electrical charge

17. What is voltage?
Bare - covered - insulated - stranded - cable(All of the above)
A difference in potential energy
DC current
12 volts

18. What is the basic law of magnetic force?
Use an effect to produce another effect
Magnetism produces a field and the field exerts force on a moving charge - every moving electrical charge produces a magnetic field - and the magnetic field is strong when the electrical charge is strong and moves rapidly(all of the above are true)
Unlike poles attract
Cell

19. Which type of cell can be recharged?
Symbol
12 volts
Secondary cell
High dielectric and mechanical strength - tempurature and moisture resistance - flexible(All of the above)

20. What is a wire classification?
Bare - covered - insulated - stranded - cable(All of the above)
DC flows continuously in one direction and AC potential difference and current both change direction
Potential difference - E*I - current times current change from point to point(all of the above)
Relay

21. To what measurement do the conductor mills refer?
Current change in a coil creates a magnetic change
1/1000th of an inch
Relay
High resistance

22. What is the purpose of capacitors in electrical circuits?
Stores electrical charge
--^V^V^V^---
The direction the negative charge moves
Alternating current

23. What does a first band of white mean?
First digit is 9
Chemical action - electromagnetism - contact - heat - light - deformation(all of the above)
Heat
12 volts

24. What is the relationship between magnetism and electricity?
20%
Magnetism produces a field and the field exerts force on a moving charge - every moving electrical charge produces a magnetic field - and the magnetic field is strong when the electrical charge is strong and moves rapidly(all of the above are true)
Resistance increases as the conductor length increases
A magnetic field

25. What is a rigid metal conduit?
Physical protection for conductors - Grounding for conductors - Concealment for conductors(all of the above)
Battery
Voltage
Energy

26. Why is the transformer important to AC electricity?

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27. What does static electricity do?
Electrical resistance against the flow of current
Does not move
Porcelain
Heat and current control(both a and c)

28. What is the name for electrical resistance of insulation?
High resistance
Wire splices
Insulation resistance and Dielectric strength(Both A and B)
Insulation resistance

29. What wire measurement is commonly used in the U.S.?
American wire gauge(AWG)
Fixed - tapped - variable(all of the above)
Parallel circuit
First digit is 9

30. What do transducers do in electrical terms?
Use an effect to produce another effect
Bare - covered - insulated - stranded - cable(All of the above)
75 Ohms
Circular and square mills(Both A and B)

31. Identify the general blueprint symbol for inductors.
Choke
Symbol
Cables
Magnetic properties

32. What type of circuit has two or more paths for current to follow?
High dielectric and mechanical strength - tempurature and moisture resistance - flexible(All of the above)
To prevent Physical - Chemical to wiring - to prevent damage to people and property(all of the above)
Electrical resistance against the flow of current
Parallel circuit

33. What is a type of mechanical transducer?
Solenoid and Relay(both A and B)
First digit
Circular and square mills(Both A and B)
From the negative battery terminal to the positive terminal

34. What makes electrons flow?
Potential difference
Relationship between current and potential difference
Battery
Bare - covered - insulated - stranded - cable(All of the above)

35. Which material has the lowest resistance at ordinary temperatures?
It increases or decreases the potential difference of AC electricity - It is effective with almost no loss of power - It's use- cost is very low(All of the above)
Silver
1 watt
Purging

36. What is the term for doing work at the rate of joule per second?
1 watt
High dielectric and mechanical strength - tempurature and moisture resistance - flexible(All of the above)
Parallel
Physical protection for conductors - Grounding for conductors - Concealment for conductors(all of the above)

37. What can permanently break down a capacitor?
Alternating current
The direction of the magnetic field
Breakdown voltage
When current starts and stops flowing - when an inductor is in the circuit(Both A and B)

38. What is a way to classify wires and cables?
A coil of wire that: carries current - has a magnetic field inside - and can have a bar of steel inside
High resistance
Insulation resistance and Dielectric strength(Both A and B)
By their covering

39. What are the names of two of the six primary methods of producing a voltage?
Fixed - tapped - variable(all of the above)
Chemical action - electromagnetism - contact - heat - light - deformation(all of the above)
Circular and square mills(Both A and B)
Silver

40. What is a characteristic of a fixed resistor?
15 -000 ohms - 20%
Unlike poles attract
Heat
Resistance value can not be changed

41. What is dielectric strength?
Produce heat - light - or limit current to control it(all of the above)
How much potential difference can a material withstand before breaking down
Circular and square mills(Both A and B)
Cell

42. What are the common units of measurement for round and square conductor cross - sections?
Solenoid and Relay(both A and B)
Parallel
To prevent Physical - Chemical to wiring - to prevent damage to people and property(all of the above)
Circular and square mills(Both A and B)

43. What do we call the ability to do work?
Potential difference - E*I - current times current change from point to point(all of the above)
First digit is 9
50 Ohms
Energy

44. What is the type of cable composed of many fine wires?
Alternating current
Stranded
Relay
Potential difference - E*I - current times current change from point to point(all of the above)

45. What is the unit of measurement of resistance?
Direction of: electric charge - magnetic field - force of the moving charge(all of the above)
Resistance increases as the conductor length increases
Ohms
Strength of the charge

46. How many kinds of poles do magnets have?
10%
Common - not rechargable - gradually discharges when in storage(All of the above)
Electromagnetism
Two

47. What is insulation resistance?
Potential difference
Electrical resistance against the flow of current
Stranded
Fixed - Electrolytic - Variable(all of the above)

48. What are the two generic methods to eliminate static electricity from metal objects?
The direction the negative charge moves
Bonding and grounding
First digit is 9
Stranded

49. Identify the blueprint symbol for resistors.
Alternating current
5%
--^V^V^V^---
To prevent Physical - Chemical to wiring - to prevent damage to people and property(all of the above)

50. Which way is the current going in the circuit shown?(electron flow)
Heat
Alternating current
Electromagnetic field
From the negative battery terminal to the positive terminal