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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 dissimilar metals which are placed in an electrolyte to form a cell.
Amp Meter
Electromagnetic Induction
'Crose Phase'
Electrode
2. In an electrical circuit - or part of an electric circuit - the intensity of the current is equal to the electromotive force that drives it divided by the resistance of the circuit.
3. A transformer designed to lower voltage of an alternating current. Most common type of transformer used on a power system.
Magnetism
Step- Down Transformer
Insulator
Millivolt
4. The complete path through which the lines of force travel - leaving the north pole and re- entering the south pole.
Electromagnetic Induction
Factors governing the Value of EMF of a Generator
Magnetic Circuit
Lines of Force
5. A circuit in which there is resistance (load) connected both in series and parallel.
Series - Parallel Circuit
'Crose Phase'
Parallel Circuit
Circuit
6. 1.Material itself (Atomic Structure - Good conductor or Bad) 2.Length of the conductor 3.Cross - sectional area (Size) 4.Temperature
Magnetic Circuit
Voltmeter
Three -Phase Circuit
Factors Governing Resistance
7. Any of the spaces occupied by the orbits of a group of electrons of approximately equal energy surronding the nucleus of an atom.
Electron
Micro Ohm
Shells
Ohmmeter
8. Opposition to current flow
Resistance
Magnetic Field
Nucleus
Factors Governing Resistance
9. A short circuit between two energized conductors and/or an energized conductor and a grounded phase. Very high current flow.
10. A transformer designed to raise the voltage of an alternating current. Most common use; In a generating plant to raise the voltage.
Permeability
Cycle
Storage Battery
Step-Up Transformer
11. An instrument for measuring electric current
Meter
Amp Meter
Series Circuit
Ohmmeter
12. The opposite ends of a magnet where the magnetism is concentrated. Each magnet has two poles - designated as north and south.
Milliampere
Magnetic Poles
Magnetic Circuit
Factors governing the Value of EMF of a Generator
13. Lines representing the direction of the magnetic force in a magnetic field.
Condenser
Magnetic Lines of Force
Volt
Lines of Force
14. Transformer coil connected to the load. (Output side of a transformer regardless of voltage).
Secondary Winding
Circuit
Potential Difference
Electron
15. Electric charges at rest. Caused by friction of materials - where a surplus of electrons exists and may be discharged.
Static Electrical Charge
Factors governing the Value of EMF of a Generator
Armature
Current
16. A unit of power; equal to 550 foot- pounds per second of approximately 746 watts.
Kilowatt
Horsepower
Condenser
Electromagnetic Induction
17. Those electrons in orbit nearest the nucleus - not easily dislodged from their normal orbits.
Bound Electrons
Non - Magnetic Material
Proton
Ohmmeter
18. Invisible lines along which magnetic energy travels from one pole of a magnet to the other.
Series Circuit
Mega Ohm
Lines of Force
Alternator
19. 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.
Magnetism
Volt
Proton
Magnetic Pole
20. A material which CANNOT be magnetized. Example: Wood - Glass - Brass - Rubber...
Permanent Magnet
Non - Magnetic Material
Valance Electron
Three -Phase Circuit
21. 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.
Horsepower
Transformer
Electromagnet
Voltage Drop
22. A generator that produces alternating current.
Potential Difference
Conductor
Alternator
Secondary Winding
23. A material with few free electrons. A structure or material used to prevent the passage of current.
Electromagnetic Induction
Insulator
Mega Ohm
Resistor
24. Those electrons in orbits farthest out from the nucleus - loosely bound and migrate from one atom to another.
Ohm's Law
Secondary Winding
Free Electrons
Meter
25. A measuring device.
Meter
Artificial Magnet
Primary Cell
Micro Ampere
26. The magnetism which a material retains after the magnetic force which magnetized it has been removed.
Resistance
Kilowatt Hour
Residual Magnetism
Electro- Motive Force
27. In a battery - the electrode which takes up the electrons returning from the external circuit.
Valance Electron
Positive Plate
Impedance
Secondary Winding
28. One million ohms.
Voltage Drop
Resistance
Mega Ohm
Resistor
29. Smallest part a substance can physically divided into composed of 2 or more atoms.
Molecule
Bound Electrons
Kilowatt Hour
Alternating Current
30. A current which reverses in direction at regularly recurring intervals - the total flow in one direction being equal to that in the other direction.
Positive Plate
Amp Meter
Ohm's Law
Alternating Current
31. A rate of movement of electrons through a conductor.
Current
Magnetic Field
Electron Flow
Cycle
32. (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
Resistance
Frequency
Proton
33. The number of cycles per second. Example: 60 cycles per second alternating current.
Permeability
Series Circuit
Frequency
Factors governing the Value of EMF of a Generator
34. An instrument for measuring electrical power. Most common use: The meter of your house to measure electrical consumption.
Wattmeter
Meter
Ohm
Kilowatt
35. 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.
Ohm
Watt
Electromagnet
Permeability
36. Any device which may be placed in the circuit and which offers opposition to the flow of electrons around the circuit.
Storage Battery
Short Circuit
Resistor
Electric Generator
37. 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.
Magnetic Pole
Power
Magnetic Poles
Non - Magnetic Material
38. A machine which utilizes magnetism to produce an EMF and consequently - an electric circuit.
Natural Magnet
Mega Ohm
Rheostat
Electric Generator
39. One millionth of an ohm.
Conductor
Micro Ohm
Electron Flow
Magnetic Material
40. A very low resistance path placed in a circuit in such a manner as to allow an excessive current flow.
'Crose Phase'
Short Circuit
Magnetic Lines of Force
Magnetic Field
41. One millionth of an ampere.
'Crose Phase'
Micro Ampere
Volt
Electron
42. Single NEGATIVE electrical charge. Orbits around the nucleus some in paths close to the nucleus - others in paths varying distance from the nucleus.
Amp Meter
Leading Current
Electron
Kilowatt Hour
43. A device used to change the voltage of an alternating current circuit.
Static Electrical Charge
Transformer
Micro Volt
Valance Electron
44. A cell which is rechargeable. Uses materials which change in compostition during delivery of current - but may be restored to original condition upon recharge.
Series - Parallel Circuit
Current
Secondary Cell
Factors Governing Resistance
45. Several secondary cells connected together for either a greater voltage or current output.
Storage Battery
Static Electrical Charge
Watt
Volt
46. The condition where the free electrons are caused to move in the same direction along or through a conductor.
Nucleus
Resistor
Electron Flow
Storage Battery
47. An instrument for measuring electromotive force in volts. It must be connected across the load that causes the votage drop.
Power
Volt
Artificial Magnet
Voltmeter
48. Certain quantity of electrons. The unit of measure that specifies the rate at which electric current flows per second.
Molecule
Current
Coulomb
Primary Winding
49. Hardened steel which has been magnetized artificially and which retains its magnetic properties
Transformer
Step- Down Transformer
Permanent Magnet
Residual Magnetism
50. The unit of Electro- Motive Force
Valance Electron
Volt
Series Circuit
Lagging Current