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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. Lines representing the direction of the magnetic force in a magnetic field.
Magnetic Lines of Force
Magnetic Field
'Crose Phase'
Resistance
2. Negative charge of electricity
Residual Magnetism
Electron
Positive Plate
Electron Flow
3. A material which can be magnetized - principally iron.
Lagging Current
Magnetic Material
Electrical Circuit
Permanent Magnet
4. Hardened steel which has been magnetized artificially and which retains its magnetic properties
Parallel Circuit
Short Circuit
Step- Down Transformer
Permanent Magnet
5. A unit of power; equal to 550 foot- pounds per second of approximately 746 watts.
Magnetic Poles
Ampere
Horsepower
Electron Flow
6. A current which reverses in direction at regularly recurring intervals - the total flow in one direction being equal to that in the other direction.
Alternating Current
Short Circuit
Series - Parallel Circuit
Voltage Drop
7. The condition where the free electrons are caused to move in the same direction along or through a conductor.
Electromagnet
Electron Flow
Micro Ampere
Primary Winding
8. Any device which may be placed in the circuit and which offers opposition to the flow of electrons around the circuit.
Voltmeter
Positive Plate
Resistor
Shells
9. A unit of power.
Alternator
Artificial Magnet
Watt
Magnetic Poles
10. A material with few free electrons. A structure or material used to prevent the passage of current.
Micro Ohm
Insulator
Shells
Micro Ampere
11. The rotating member of an electrical machine.
Rotor
Milliampere
Series Circuit
Condenser
12. A measuring device.
Alternating Current
Meter
Milliampere
Amp Meter
13. A device which capacity is its chief electrical property; a device for storing or holding an electric charge; a capacitor.
Atom
Storage Battery
Condenser
Electron Flow
14. A material which CANNOT be magnetized. Example: Wood - Glass - Brass - Rubber...
Circuit
Non - Magnetic Material
Ohmmeter
Atom
15. Electric charges at rest. Caused by friction of materials - where a surplus of electrons exists and may be discharged.
Bimetallic Strip
Static Electrical Charge
Permanent Magnet
Conductor
16. An alternating current which current cycle begins later that its voltage cycle.
Series - Parallel Circuit
Plates
Lagging Current
Volt
17. The unit of resistance. It is the resistance through which a voltage of 1 volt will produce a current of 1 ampere.
Volt
Armature
Ohm
Volt
18. The electrodes of a cell shaped as plates to expose a surface as possible to the electrolyte.
Three -Phase Circuit
'Crose Phase'
Electrode
Plates
19. A circuit with two or more paths for the current to take.
Magnetic Circuit
Volt
Ohm's Law
Parallel Circuit
20. Single NEGATIVE electrical charge. Orbits around the nucleus some in paths close to the nucleus - others in paths varying distance from the nucleus.
Electrode
Electron
Shells
Millivolt
21. That property of a material which determines how readily it conducts magnetic lines of flux. Opposite magnetic quality or conductivity.
Permeability
Series Circuit
Ohm's Law
Transformer
22. A unit of work or ENERGY. 1 kilowatt hour = 1 -000 watt hours
Kilowatt Hour
Magnetic Material
Factors Governing Resistance
Condenser
23. (Lode Stone) Certain type of mineral ore which has the natural Properties of a magnet.
Natural Magnet
Parallel Circuit
Electron
Artificial Magnet
24. Total and complete opposition to the flow of electrons
Storage Battery
Positive Plate
Free Electrons
Impedance
25. Opposition to current flow
Meter
Voltage Drop
Resistance
Kilowatt
26. 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.
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27. Any of the spaces occupied by the orbits of a group of electrons of approximately equal energy surronding the nucleus of an atom.
Shells
Voltage Drop
Millivolt
Power
28. An alternating current which current cycle begins earlier than its voltage cycle.
Ampere
Micro Volt
Positive Plate
Leading Current
29. The process of producing an electromotive force in a conductor as a result of the cutting of magnetic lines of force by a conductor.
Factors governing the Value of EMF of a Generator
Electromagnetic Induction
Permanent Magnet
Milliampere
30. An instrument for measuring electromotive force in volts. It must be connected across the load that causes the votage drop.
Conductor
Fuse
Leading Current
Voltmeter
31. The number of cycles per second. Example: 60 cycles per second alternating current.
Bound Electrons
Volt
Non - Magnetic Material
Frequency
32. A unit of POWER. 1 kilowatt = 1 -000 watts
Magnetic Lines of Force
Kilowatt
Natural Magnet
Magnetic Field
33. A cell which is composed of certain materials which are used up during the process of delivering electric current.
Electrode
Resistance
Primary Cell
Rheostat
34. The dissimilar metals which are placed in an electrolyte to form a cell.
Magnetic Field
Electrode
Magnetic Circuit
Step-Up Transformer
35. The complete path through which the lines of force travel - leaving the north pole and re- entering the south pole.
Nucleus
Series - Parallel Circuit
Ohm's Law
Magnetic Circuit
36. Those electrons in orbit nearest the nucleus - not easily dislodged from their normal orbits.
Resistor
Step- Down Transformer
Cycle
Bound Electrons
37. Meter used to measure resistance in an electrical circuit.
Bound Electrons
Ohmmeter
Step- Down Transformer
Micro Volt
38. 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-Up Transformer
Impedance
Circuit
Positive Plate
39. 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.
Leading Current
Valance Electron
Lines of Force
Series - Parallel Circuit
40. A current limiting device designed to melt and break the circuit when a specified current is exceeded. (The weakest point in a circuit)
Shells
Coulomb
Insulator
Fuse
41. A certain force exhibited by some materials which give them the ability to attract other materials. Principally iron or its alloys.
Magnetic Lines of Force
Bound Electrons
Current
Magnetism
42. The magnetism which a material retains after the magnetic force which magnetized it has been removed.
Ampere
Magnetic Circuit
Residual Magnetism
Ohmmeter
43. 1.Material itself (Atomic Structure - Good conductor or Bad) 2.Length of the conductor 3.Cross - sectional area (Size) 4.Temperature
Factors Governing Resistance
Insulator
Meter
Amp Meter
44. The property of a material that opposes the flow of current.
Electrolyte
Ohm
Resistance
Alternator
45. Shows relationship between Current - Voltage - Wattage and Resistance.
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46. A circuit with more than one path. Current branches to flow in every available path.
Horsepower
Proton
Parallel Circuit
Current
47. 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.
Current
Amp Meter
Voltage Drop
Kilowatt
48. A material that has many free electrons thus allowing electric current to flow through it easily.
Resistance
Secondary Cell
Conductor
Alternator
49. In a battery - the electrode which takes up the electrons returning from the external circuit.
Magnetic Field
Resistance
Positive Plate
Electron
50. A cell which is rechargeable. Uses materials which change in compostition during delivery of current - but may be restored to original condition upon recharge.
Secondary Cell
Electron Flow
Cycle
Mega Ohm