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Test your basic knowledge |
Basic Electricity Vocab
Start Test
Study First
Subject
:
engineering
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. The number of cycles per second. Example: 60 cycles per second alternating current.
Leading Current
Cycle
Frequency
Milliampere
2. Smallest part a substance can physically divided into composed of 2 or more atoms.
Current
Molecule
Coulomb
Electron Flow
3. The area surrounding a magnet in which magnetic properties are exhibited
Magnetic Field
Rheostat
Insulator
Magnetic Material
4. One millionth of an ohm.
Micro Ohm
Static Electrical Charge
Lagging Current
Coulomb
5. The dissimilar metals which are placed in an electrolyte to form a cell.
Factors Governing Resistance
Static Electrical Charge
Permeability
Electrode
6. Transformer coil connected to the load. (Output side of a transformer regardless of voltage).
Alternator
Micro Ampere
Electromagnetic Induction
Secondary Winding
7. Term applied to the loss of voltage in forcing current through any portion of a circuit. Different factors will cause a drop; material - size - (cross - sectional area) length - temperature.
Bimetallic Strip
Bound Electrons
Factors governing the Value of EMF of a Generator
Voltage Drop
8. A rate of movement of electrons through a conductor.
Non - Magnetic Material
Current
Potential Difference
Molecule
9. The center portion of an atom which has a positive electrical charge.
Resistor
Nucleus
Alternating Current
Magnetic Circuit
10. A resistor designed so that its resistance is readily adjusted.
Lines of Force
Wattmeter
Rheostat
Power
11. Lines representing the direction of the magnetic force in a magnetic field.
Short Circuit
Magnetic Lines of Force
Magnetic Pole
Micro Ampere
12. A material with few free electrons. A structure or material used to prevent the passage of current.
Insulator
Artificial Magnet
Free Electrons
Voltage Drop
13. That property of a material which determines how readily it conducts magnetic lines of flux. Opposite magnetic quality or conductivity.
Ohmmeter
Step-Up Transformer
Milliampere
Permeability
14. Total and complete opposition to the flow of electrons
Permanent Magnet
Ohm's Law
Current
Impedance
15. A current which reverses in direction at regularly recurring intervals - the total flow in one direction being equal to that in the other direction.
Voltage Drop
Magnetic Material
Positive Plate
Alternating Current
16. A complete path provided for the flow of electrons. Consists of a source - with a closed conducting path leading from the source and back to the source
Electrical Circuit
Magnetism
Electromagnetic Induction
Primary Cell
17. Any of the spaces occupied by the orbits of a group of electrons of approximately equal energy surronding the nucleus of an atom.
Micro Ohm
Shells
Parallel Circuit
Horsepower
18. A material which can be magnetized - principally iron.
Micro Volt
Volt
Electron
Magnetic Material
19. Meter used to measure resistance in an electrical circuit.
Ohmmeter
Electron Flow
Transformer
Resistor
20. Several secondary cells connected together for either a greater voltage or current output.
Electrical Circuit
Power
Storage Battery
Magnetic Pole
21. The magnetism which a material retains after the magnetic force which magnetized it has been removed.
Electromagnetic Induction
Milliampere
Residual Magnetism
Cycle
22. Any device which may be placed in the circuit and which offers opposition to the flow of electrons around the circuit.
Electron Flow
Magnetic Lines of Force
Ampere
Resistor
23. An alternating current which current cycle begins later that its voltage cycle.
Mega Ohm
Power
Conductor
Lagging Current
24. A connection of circuit of low resistance. Current through each of the end- to- end devices is exactly the same. Only one path for the current.
Series Circuit
Wattmeter
Circuit
Lines of Force
25. (EMF) The force created by an electric generator (or by other means) which causes current to flow. (Same as Voltage - Volts - Electric Potential - Pressure).
Electro- Motive Force
Parallel Circuit
Conductor
Non - Magnetic Material
26. A certain force exhibited by some materials which give them the ability to attract other materials. Principally iron or its alloys.
Electromagnet
Factors Governing Resistance
Current
Magnetism
27. One- thousandth of a ampere
Amp Meter
Power
Factors governing the Value of EMF of a Generator
Milliampere
28. A machine which utilizes magnetism to produce an EMF and consequently - an electric circuit.
Parallel Circuit
Plates
Electrolyte
Electric Generator
29. A transformer designed to raise the voltage of an alternating current. Most common use; In a generating plant to raise the voltage.
Magnetic Lines of Force
Step-Up Transformer
Factors governing the Value of EMF of a Generator
Impedance
30. An instrument for measuring electrical power. Most common use: The meter of your house to measure electrical consumption.
Wattmeter
Voltmeter
Plates
Electrode
31. An instrument for measuring electric current
Milliampere
Amp Meter
Storage Battery
Magnetic Circuit
32. A coil of wire designed to act as a magnet as a result of carrying an electrical current. It is usually wound on a soft iron core.
Electromagnet
Permanent Magnet
Primary Cell
Alternator
33. Single NEGATIVE electrical charge. Orbits around the nucleus some in paths close to the nucleus - others in paths varying distance from the nucleus.
Magnetic Pole
Three -Phase Circuit
Ohmmeter
Electron
34. A material that has many free electrons thus allowing electric current to flow through it easily.
Ohm's Law
Conductor
Magnetic Field
Cycle
35. A unit of power; equal to 550 foot- pounds per second of approximately 746 watts.
Leading Current
Ohm's Law
Magnetic Poles
Horsepower
36. The unit of resistance. It is the resistance through which a voltage of 1 volt will produce a current of 1 ampere.
Ohm
Micro Volt
Millivolt
Step- Down Transformer
37. Occurs when a stream of electrons are caused to move through a conductor.
Current
Bound Electrons
Proton
Permanent Magnet
38. A device used to change the voltage of an alternating current circuit.
Parallel Circuit
Natural Magnet
Transformer
Ohm
39. An instrument for measuring electromotive force in volts. It must be connected across the load that causes the votage drop.
Voltmeter
Positive Plate
Valance Electron
Bound Electrons
40. The unit of electromotive force - potential - pressure - or voltage which produces a current of one ampere in a circuit having a resistance of 1 ohm. This is the force created to move electrons through a circuit.
Magnetic Circuit
Amp Meter
Volt
Meter
41. A material which CANNOT be magnetized. Example: Wood - Glass - Brass - Rubber...
Ohm's Law
Valance Electron
Series - Parallel Circuit
Non - Magnetic Material
42. Positive charge of electricity. Located in the nucleus of the atom.
Proton
Resistor
Ohm
Rotor
43. The part of the magnet where the magnetic force is most concentrated. Commonly referred to as the North or South pole or the positive or negative poles)
Magnetic Pole
Watt
Magnetic Field
Primary Winding
44. In a battery - the electrode which takes up the electrons returning from the external circuit.
Ohmmeter
Positive Plate
Rheostat
Step- Down Transformer
45. 1.Speed of conductors cutting lines of force 2.Strength of the magnetic field 3.Length of conductors cutting through the field
Voltage Drop
Wattmeter
Kilowatt Hour
Factors governing the Value of EMF of a Generator
46. The space around a magnet in which the magnetic force is felt.
Resistor
Millivolt
Cycle
Magnetic Field
47. The time rate at which work is done or energy is transferred. When a pressure of 1 volt sends a current of 1 ampere through a resistance of 1 ohm - the power in the circuit is said to be 1 watt.
Electrical Circuit
Power
Magnetism
Kilowatt
48. The unit of Electro- Motive Force
Free Electrons
Potential Difference
Magnetic Material
Volt
49. A unit of power.
Watt
'Crose Phase'
Micro Volt
Wattmeter
50. A device which capacity is its chief electrical property; a device for storing or holding an electric charge; a capacitor.
Condenser
Current
Resistance
Volt