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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. Coil connected to the source of power on a transformer.
Amp Meter
Primary Winding
Insulator
Mega Ohm
2. A material which can be magnetized - principally iron.
Cycle
Kilowatt
Magnetic Material
Volt
3. Shows relationship between Current - Voltage - Wattage and Resistance.
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4. The property of a material that opposes the flow of current.
Ohm
Resistance
Voltage Drop
Bound Electrons
5. The unit of resistance. It is the resistance through which a voltage of 1 volt will produce a current of 1 ampere.
Volt
Alternator
Electromagnetic Induction
Ohm
6. 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.
Volt
Proton
Resistance
Parallel Circuit
7. A complete sequence of events - as an alternating- current cycle.
Cycle
Conductor
Ampere
Magnetism
8. The liquid solution (sometime a paste) in which the electrodes are placed.
Amp Meter
Electrolyte
Step- Down Transformer
Cycle
9. A material that has many free electrons thus allowing electric current to flow through it easily.
Step-Up Transformer
Volt
Magnetic Material
Conductor
10. A current limiting device designed to melt and break the circuit when a specified current is exceeded. (The weakest point in a circuit)
Wattmeter
Magnetic Field
Fuse
Resistor
11. A transformer designed to lower voltage of an alternating current. Most common type of transformer used on a power system.
Step- Down Transformer
Insulator
Factors governing the Value of EMF of a Generator
Resistor
12. Invisible lines along which magnetic energy travels from one pole of a magnet to the other.
Alternator
Three -Phase Circuit
Lines of Force
Ohmmeter
13. One million ohms.
Valance Electron
Mega Ohm
Factors governing the Value of EMF of a Generator
Bound Electrons
14. One- thousandth of a ampere
Permanent Magnet
Parallel Circuit
Millivolt
Milliampere
15. An instrument for measuring electrical power. Most common use: The meter of your house to measure electrical consumption.
Ohmmeter
Wattmeter
Current
Permeability
16. A short circuit between two energized conductors and/or an energized conductor and a grounded phase. Very high current flow.
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17. A circuit in which there is resistance (load) connected both in series and parallel.
Conductor
Nucleus
Millivolt
Series - Parallel Circuit
18. Occurs when a stream of electrons are caused to move through a conductor.
Parallel Circuit
Magnetic Material
Current
Milliampere
19. A measuring device.
Wattmeter
Primary Winding
Meter
Factors Governing Resistance
20. The unit of Electro- Motive Force
Volt
Short Circuit
Resistance
Primary Winding
21. Certain quantity of electrons. The unit of measure that specifies the rate at which electric current flows per second.
Factors governing the Value of EMF of a Generator
Coulomb
Magnetic Material
Electron Flow
22. The moving part of a dynamo or motor consisting of coils of wire around an iron core.
Parallel Circuit
Horsepower
Cycle
Armature
23. A single electron or one of two or more electrons in the outer shell of an atom that is responsible for the chemical properties of an atom.
Current
Micro Ohm
Valance Electron
Ohm's Law
24. Several secondary cells connected together for either a greater voltage or current output.
Rotor
Secondary Winding
Static Electrical Charge
Storage Battery
25. A rod or strip composed of two metals having different rates or coefficients of expansion. Upon being heated - it bends in a direction which causes the material with the greater rate of expansion to be on the outside.
Bimetallic Strip
Circuit
Horsepower
Permeability
26. Hardened steel which has been magnetized artificially and which retains its magnetic properties
Artificial Magnet
Permanent Magnet
Natural Magnet
Conductor
27. Meter used to measure resistance in an electrical circuit.
Ohmmeter
Fuse
Natural Magnet
Static Electrical Charge
28. An alternating current which current cycle begins later that its voltage cycle.
Ampere
Series - Parallel Circuit
Voltage Drop
Lagging Current
29. Those electrons in orbits farthest out from the nucleus - loosely bound and migrate from one atom to another.
Fuse
Series Circuit
Bound Electrons
Free Electrons
30. In a battery - the electrode which takes up the electrons returning from the external circuit.
Positive Plate
Storage Battery
Bimetallic Strip
Factors Governing Resistance
31. Any of the spaces occupied by the orbits of a group of electrons of approximately equal energy surronding the nucleus of an atom.
Millivolt
'Crose Phase'
Magnetic Lines of Force
Shells
32. An instrument for measuring electric current
Magnetic Poles
Transformer
Lagging Current
Amp Meter
33. A machine which utilizes magnetism to produce an EMF and consequently - an electric circuit.
Kilowatt
Proton
Electric Generator
Series Circuit
34. The difference between the electrical condition of one point in an electric circuit and that of another point which tends to cause current to flow between two points. Measured in volts.
Wattmeter
Potential Difference
Valance Electron
Magnetic Field
35. Total and complete opposition to the flow of electrons
Impedance
Natural Magnet
Step- Down Transformer
Factors governing the Value of EMF of a Generator
36. An instrument for measuring electromotive force in volts. It must be connected across the load that causes the votage drop.
Voltmeter
Factors Governing Resistance
Magnetism
Ohm's Law
37. 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.
Lines of Force
Alternating Current
Electromagnet
Electromagnetic Induction
38. The space around a magnet in which the magnetic force is felt.
Potential Difference
Magnetic Field
Permanent Magnet
Magnetic Lines of Force
39. 1.Material itself (Atomic Structure - Good conductor or Bad) 2.Length of the conductor 3.Cross - sectional area (Size) 4.Temperature
Factors Governing Resistance
Alternating Current
Conductor
Electro- Motive Force
40. Lines representing the direction of the magnetic force in a magnetic field.
Magnetic Pole
Valance Electron
Magnetic Lines of Force
Rotor
41. Transformer coil connected to the load. (Output side of a transformer regardless of voltage).
Secondary Winding
Condenser
Magnetic Circuit
Lagging Current
42. A current which reverses in direction at regularly recurring intervals - the total flow in one direction being equal to that in the other direction.
Kilowatt
Micro Ampere
Electromagnet
Alternating Current
43. A device used to change the voltage of an alternating current circuit.
Impedance
Voltmeter
Transformer
Proton
44. A unit of power.
Watt
Cycle
Step-Up Transformer
Artificial Magnet
45. A material with few free electrons. A structure or material used to prevent the passage of current.
Insulator
Lines of Force
Armature
Impedance
46. A material which CANNOT be magnetized. Example: Wood - Glass - Brass - Rubber...
Non - Magnetic Material
Armature
Current
Conductor
47. (EMF) The force created by an electric generator (or by other means) which causes current to flow. (Same as Voltage - Volts - Electric Potential - Pressure).
Alternating Current
Electro- Motive Force
Magnetic Lines of Force
Factors governing the Value of EMF of a Generator
48. 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.
Resistance
Circuit
Electromagnetic Induction
Voltage Drop
49. Positive charge of electricity. Located in the nucleus of the atom.
Factors governing the Value of EMF of a Generator
Proton
Horsepower
Short Circuit
50. The magnetism which a material retains after the magnetic force which magnetized it has been removed.
Ohm's Law
Secondary Cell
Lines of Force
Residual Magnetism