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Test your basic knowledge |
Basic Electricity Vocab
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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 condition where the free electrons are caused to move in the same direction along or through a conductor.
Electron Flow
Rotor
Insulator
Electron
2. A current limiting device designed to melt and break the circuit when a specified current is exceeded. (The weakest point in a circuit)
Bound Electrons
Fuse
Power
Permanent Magnet
3. Rate of electrons flow (current flow). When one 'Coulomb' of electrons pass a given point in one second.
Ampere
Transformer
Magnetic Poles
Impedance
4. A rate of movement of electrons through a conductor.
Current
Step-Up Transformer
Armature
Amp Meter
5. The liquid solution (sometime a paste) in which the electrodes are placed.
Molecule
Short Circuit
Electrolyte
Volt
6. A device which capacity is its chief electrical property; a device for storing or holding an electric charge; a capacitor.
Electron Flow
Rotor
Condenser
Alternator
7. An alternating current which current cycle begins earlier than its voltage cycle.
Bound Electrons
Meter
Step- Down Transformer
Leading Current
8. Single NEGATIVE electrical charge. Orbits around the nucleus some in paths close to the nucleus - others in paths varying distance from the nucleus.
Artificial Magnet
Fuse
Bimetallic Strip
Electron
9. (EMF) The force created by an electric generator (or by other means) which causes current to flow. (Same as Voltage - Volts - Electric Potential - Pressure).
Step- Down Transformer
Wattmeter
Meter
Electro- Motive Force
10. A device used to change the voltage of an alternating current circuit.
Three -Phase Circuit
Resistor
Artificial Magnet
Transformer
11. A circuit with two or more paths for the current to take.
Primary Winding
Magnetic Poles
Parallel Circuit
Rotor
12. The complete path through which the lines of force travel - leaving the north pole and re- entering the south pole.
Rheostat
Magnetic Circuit
Conductor
Voltage Drop
13. The electrodes of a cell shaped as plates to expose a surface as possible to the electrolyte.
Ohmmeter
Three -Phase Circuit
Step- Down Transformer
Plates
14. The rotating member of an electrical machine.
Conductor
Volt
Circuit
Rotor
15. 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
Watt
16. 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.
Horsepower
Meter
Bimetallic Strip
Permanent Magnet
17. One million ohms.
Cycle
Impedance
Mega Ohm
Ampere
18. An instrument for measuring electric current
Electrical Circuit
Frequency
Proton
Amp Meter
19. 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
Alternator
Artificial Magnet
Current
20. A transformer designed to lower voltage of an alternating current. Most common type of transformer used on a power system.
Step- Down Transformer
Electron Flow
Voltage Drop
Free Electrons
21. The space around a magnet in which the magnetic force is felt.
Micro Ampere
Magnetic Field
Factors governing the Value of EMF of a Generator
Primary Winding
22. A circuit in which there is resistance (load) connected both in series and parallel.
Cycle
Series - Parallel Circuit
Resistance
Shells
23. A measuring device.
Primary Winding
Magnetic Poles
Series Circuit
Meter
24. A unit of power.
Magnetic Field
Magnetism
Watt
Micro Ohm
25. The opposite ends of a magnet where the magnetism is concentrated. Each magnet has two poles - designated as north and south.
Magnetic Poles
Residual Magnetism
Electromagnet
Lagging Current
26. 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.
Power
Magnetic Field
Ohmmeter
Factors governing the Value of EMF of a Generator
27. A complete sequence of events - as an alternating- current cycle.
Condenser
Cycle
Step- Down Transformer
Conductor
28. 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.
Non - Magnetic Material
Positive Plate
Resistor
Volt
29. 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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30. A generator that produces alternating current.
Magnetic Poles
Alternator
Step-Up Transformer
Kilowatt Hour
31. 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.
Plates
Magnetic Material
Electromagnet
Magnetic Field
32. A unit of power; equal to 550 foot- pounds per second of approximately 746 watts.
Horsepower
Short Circuit
Secondary Cell
Meter
33. The voltage dissipation between any two points in a circuit. The voltage 'dropped' or 'dissipated' in forcing current through a resistance.
Voltage Drop
Magnetism
Artificial Magnet
Alternator
34. Opposition to current flow
Insulator
Magnetic Material
Resistance
Leading Current
35. The area surrounding a magnet in which magnetic properties are exhibited
Armature
Magnetic Field
Parallel Circuit
Electric Generator
36. A circuit with only one path for current to flow. There are no branches.
Watt
Current
Series Circuit
Bound Electrons
37. A short circuit between two energized conductors and/or an energized conductor and a grounded phase. Very high current flow.
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38. Iron and certain alloys of iron which are magnetized by artificial means.
Rotor
Step-Up Transformer
Permeability
Artificial Magnet
39. (Lode Stone) Certain type of mineral ore which has the natural Properties of a magnet.
Parallel Circuit
Insulator
Natural Magnet
Circuit
40. 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.
Magnetic Poles
Electro- Motive Force
Series Circuit
'Crose Phase'
41. 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)
Free Electrons
Magnetic Pole
Millivolt
Ohm's Law
42. Fundamental constituents of matter. The 'elements' (tiny particles) which come together in various combinations to form molecules of many substances.
Atom
Watt
Valance Electron
Primary Winding
43. A current which reverses in direction at regularly recurring intervals - the total flow in one direction being equal to that in the other direction.
Parallel Circuit
Electromagnet
Free Electrons
Alternating Current
44. Positive charge of electricity. Located in the nucleus of the atom.
Proton
Cycle
Impedance
Voltage Drop
45. Negative charge of electricity
Voltage Drop
Horsepower
Electrode
Electron
46. A unit of POWER. 1 kilowatt = 1 -000 watts
Kilowatt
Artificial Magnet
Electron
Magnetic Field
47. A transformer designed to raise the voltage of an alternating current. Most common use; In a generating plant to raise the voltage.
Magnetic Poles
Cycle
Secondary Cell
Step-Up Transformer
48. A machine which utilizes magnetism to produce an EMF and consequently - an electric circuit.
Power
Ohm's Law
Frequency
Electric Generator
49. The property of a material that opposes the flow of current.
Transformer
Electric Generator
Resistance
Magnetic Poles
50. Those electrons in orbits farthest out from the nucleus - loosely bound and migrate from one atom to another.
Free Electrons
Micro Ohm
Voltage Drop
Electromagnetic Induction