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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. A transformer designed to lower voltage of an alternating current. Most common type of transformer used on a power system.
Step- Down Transformer
Step-Up Transformer
Static Electrical Charge
Condenser
2. Any device which may be placed in the circuit and which offers opposition to the flow of electrons around the circuit.
Resistor
Electric Generator
Nucleus
Current
3. (EMF) The force created by an electric generator (or by other means) which causes current to flow. (Same as Voltage - Volts - Electric Potential - Pressure).
Coulomb
Electro- Motive Force
Impedance
Series Circuit
4. A circuit with two or more paths for the current to take.
Series Circuit
Magnetic Lines of Force
Voltage Drop
Parallel Circuit
5. A material which can be magnetized - principally iron.
Circuit
Micro Volt
Parallel Circuit
Magnetic Material
6. The magnetism which a material retains after the magnetic force which magnetized it has been removed.
Impedance
Horsepower
Magnetic Lines of Force
Residual Magnetism
7. 1.Speed of conductors cutting lines of force 2.Strength of the magnetic field 3.Length of conductors cutting through the field
Factors governing the Value of EMF of a Generator
Primary Cell
Artificial Magnet
Electromagnetic Induction
8. Total and complete opposition to the flow of electrons
Circuit
Voltage Drop
Impedance
Micro Volt
9. A certain force exhibited by some materials which give them the ability to attract other materials. Principally iron or its alloys.
Lagging Current
Lines of Force
Magnetism
Permanent Magnet
10. 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
Micro Volt
Leading Current
Electrical Circuit
Frequency
11. One millionth of an ampere.
Rheostat
Micro Ohm
Micro Ampere
Artificial Magnet
12. The path of an electric current. To permit a steady flow of current - the path must be complete. Commonly - a complete circuit includes a device for the production of an electromotive force - connecting wires - and a device supplied with electricity.
Step- Down Transformer
Proton
Kilowatt
Circuit
13. 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.
Electromagnetic Induction
Short Circuit
Factors governing the Value of EMF of a Generator
Valance Electron
14. A transformer designed to raise the voltage of an alternating current. Most common use; In a generating plant to raise the voltage.
Current
Ohm's Law
Step-Up Transformer
Voltage Drop
15. Those electrons in orbits farthest out from the nucleus - loosely bound and migrate from one atom to another.
Primary Cell
Magnetism
Positive Plate
Free Electrons
16. (Lode Stone) Certain type of mineral ore which has the natural Properties of a magnet.
Atom
Magnetic Poles
Natural Magnet
Resistance
17. 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
Storage Battery
Ohm's Law
Magnetic Pole
18. A device which capacity is its chief electrical property; a device for storing or holding an electric charge; a capacitor.
Condenser
Bound Electrons
Non - Magnetic Material
Electron
19. Single POSITIVE electrical charge - located in the middle of an atom.
Parallel Circuit
Step-Up Transformer
Proton
Magnetic Field
20. The complete path through which the lines of force travel - leaving the north pole and re- entering the south pole.
Meter
Magnetic Circuit
Rheostat
Factors Governing Resistance
21. Occurs when a stream of electrons are caused to move through a conductor.
Watt
Current
Magnetic Poles
'Crose Phase'
22. Lines representing the direction of the magnetic force in a magnetic field.
Wattmeter
Magnetic Lines of Force
Magnetic Circuit
Insulator
23. Any of the spaces occupied by the orbits of a group of electrons of approximately equal energy surronding the nucleus of an atom.
Free Electrons
Shells
Secondary Cell
Insulator
24. The unit of Electro- Motive Force
Condenser
Factors governing the Value of EMF of a Generator
Primary Cell
Volt
25. 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)
Static Electrical Charge
Magnetic Pole
Parallel Circuit
Condenser
26. The electrodes of a cell shaped as plates to expose a surface as possible to the electrolyte.
Electrode
Condenser
Impedance
Plates
27. 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.
Primary Winding
Bimetallic Strip
Mega Ohm
Electromagnet
28. An alternating current which current cycle begins later that its voltage cycle.
Electro- Motive Force
Magnetic Lines of Force
Proton
Lagging Current
29. An alternating current which current cycle begins earlier than its voltage cycle.
Natural Magnet
Leading Current
'Crose Phase'
Electrolyte
30. Transformer coil connected to the load. (Output side of a transformer regardless of voltage).
Secondary Winding
Mega Ohm
Permanent Magnet
Fuse
31. The dissimilar metals which are placed in an electrolyte to form a cell.
Electrode
Permeability
Electron
Electrical Circuit
32. The opposite ends of a magnet where the magnetism is concentrated. Each magnet has two poles - designated as north and south.
Resistance
Impedance
Millivolt
Magnetic Poles
33. The property of a material that opposes the flow of current.
Micro Volt
Positive Plate
Volt
Resistance
34. That property of a material which determines how readily it conducts magnetic lines of flux. Opposite magnetic quality or conductivity.
Bimetallic Strip
Ohmmeter
Power
Permeability
35. A unit of POWER. 1 kilowatt = 1 -000 watts
Magnetic Field
Potential Difference
Kilowatt
Meter
36. 1.Material itself (Atomic Structure - Good conductor or Bad) 2.Length of the conductor 3.Cross - sectional area (Size) 4.Temperature
Millivolt
Factors Governing Resistance
Permanent Magnet
Armature
37. Rate of electrons flow (current flow). When one 'Coulomb' of electrons pass a given point in one second.
Volt
Short Circuit
Current
Ampere
38. The center portion of an atom which has a positive electrical charge.
Volt
Wattmeter
Fuse
Nucleus
39. A current limiting device designed to melt and break the circuit when a specified current is exceeded. (The weakest point in a circuit)
Proton
Frequency
Step-Up Transformer
Fuse
40. A circuit carrying three alternating currents whose cycles begin one after another. 120 electrical degrees apart.
Three -Phase Circuit
Magnetic Material
Positive Plate
Leading Current
41. A complete sequence of events - as an alternating- current cycle.
Cycle
Ohm's Law
Insulator
Residual Magnetism
42. A circuit in which there is resistance (load) connected both in series and parallel.
Coulomb
Series - Parallel Circuit
Impedance
Electromagnet
43. The number of cycles per second. Example: 60 cycles per second alternating current.
Frequency
Ampere
Electrolyte
Electromagnet
44. A unit of power.
Valance Electron
Watt
Primary Winding
Lagging Current
45. A very low resistance path placed in a circuit in such a manner as to allow an excessive current flow.
Current
Circuit
Short Circuit
Ohm
46. An instrument for measuring electric current
Electrode
Electro- Motive Force
Artificial Magnet
Amp Meter
47. The rotating member of an electrical machine.
Ampere
Circuit
Rotor
Valance Electron
48. A material that has many free electrons thus allowing electric current to flow through it easily.
Conductor
Potential Difference
Proton
Primary Cell
49. A cell which is composed of certain materials which are used up during the process of delivering electric current.
Primary Cell
Shells
Primary Winding
Ohm's Law
50. One million ohms.
Mega Ohm
Positive Plate
Magnetic Field
Ohm