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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 material which CANNOT be magnetized. Example: Wood - Glass - Brass - Rubber...
Non - Magnetic Material
Insulator
Voltage Drop
Mega Ohm
2. Iron and certain alloys of iron which are magnetized by artificial means.
Primary Cell
Power
Primary Winding
Artificial Magnet
3. A unit of power.
Electron
Watt
Permeability
Insulator
4. The area surrounding a magnet in which magnetic properties are exhibited
Kilowatt
Short Circuit
Magnetic Field
Electromagnet
5. 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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6. The process of producing an electromotive force in a conductor as a result of the cutting of magnetic lines of force by a conductor.
Shells
Electromagnetic Induction
Magnetic Poles
'Crose Phase'
7. A measuring device.
Electrolyte
Meter
Ohm's Law
Short Circuit
8. Occurs when a stream of electrons are caused to move through a conductor.
Current
Leading Current
Rotor
Electromagnetic Induction
9. In a battery - the electrode which takes up the electrons returning from the external circuit.
Voltmeter
Electron
Positive Plate
Rotor
10. The dissimilar metals which are placed in an electrolyte to form a cell.
Non - Magnetic Material
Meter
Electrode
Ampere
11. Those electrons in orbits farthest out from the nucleus - loosely bound and migrate from one atom to another.
Artificial Magnet
Electrical Circuit
Milliampere
Free Electrons
12. The number of cycles per second. Example: 60 cycles per second alternating current.
Parallel Circuit
Primary Cell
Frequency
Insulator
13. Any of the spaces occupied by the orbits of a group of electrons of approximately equal energy surronding the nucleus of an atom.
Ohm's Law
Shells
Residual Magnetism
Ohm
14. The complete path through which the lines of force travel - leaving the north pole and re- entering the south pole.
Alternating Current
Magnetic Circuit
Nucleus
Atom
15. A material that has many free electrons thus allowing electric current to flow through it easily.
Magnetic Poles
Secondary Cell
Conductor
Secondary Winding
16. One millionth of an ampere.
Voltmeter
Alternator
Micro Ampere
Magnetic Material
17. A short circuit between two energized conductors and/or an energized conductor and a grounded phase. Very high current flow.
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18. 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)
Magnetic Pole
Fuse
Electrode
Rheostat
19. Hardened steel which has been magnetized artificially and which retains its magnetic properties
Permanent Magnet
Ampere
Current
Coulomb
20. Any device which may be placed in the circuit and which offers opposition to the flow of electrons around the circuit.
Magnetism
Artificial Magnet
Resistor
Electron
21. An instrument for measuring electromotive force in volts. It must be connected across the load that causes the votage drop.
Watt
Voltmeter
Current
Electrolyte
22. 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
Current
Electrical Circuit
Factors governing the Value of EMF of a Generator
Series Circuit
23. 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
Voltage Drop
Armature
Non - Magnetic Material
24. 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.
Mega Ohm
Voltage Drop
Electromagnetic Induction
Bimetallic Strip
25. A unit of work or ENERGY. 1 kilowatt hour = 1 -000 watt hours
Kilowatt Hour
Magnetic Material
Electromagnet
Lines of Force
26. A device used to change the voltage of an alternating current circuit.
Static Electrical Charge
Electrical Circuit
Transformer
Horsepower
27. A cell which is rechargeable. Uses materials which change in compostition during delivery of current - but may be restored to original condition upon recharge.
Rheostat
Electron
Secondary Cell
Electrical Circuit
28. Total and complete opposition to the flow of electrons
Impedance
Milliampere
Nucleus
Bimetallic Strip
29. Meter used to measure resistance in an electrical circuit.
Factors governing the Value of EMF of a Generator
Ohm's Law
Magnetic Lines of Force
Ohmmeter
30. Shows relationship between Current - Voltage - Wattage and Resistance.
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31. A resistor designed so that its resistance is readily adjusted.
Armature
Rheostat
Voltmeter
Amp Meter
32. Certain quantity of electrons. The unit of measure that specifies the rate at which electric current flows per second.
Coulomb
Valance Electron
Magnetic Lines of Force
Condenser
33. An instrument for measuring electric current
Horsepower
Ohmmeter
Amp Meter
Static Electrical Charge
34. The condition where the free electrons are caused to move in the same direction along or through a conductor.
Electron Flow
Resistor
Free Electrons
Horsepower
35. Single NEGATIVE electrical charge. Orbits around the nucleus some in paths close to the nucleus - others in paths varying distance from the nucleus.
Secondary Winding
Resistance
Primary Cell
Electron
36. The property of a material that opposes the flow of current.
Primary Winding
Resistance
Horsepower
Static Electrical Charge
37. Positive charge of electricity. Located in the nucleus of the atom.
Plates
Voltage Drop
Electrical Circuit
Proton
38. 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
Micro Ohm
Magnetic Pole
Circuit
39. Rate of electrons flow (current flow). When one 'Coulomb' of electrons pass a given point in one second.
Electro- Motive Force
Condenser
Ampere
Voltage Drop
40. The unit of Electro- Motive Force
Volt
Kilowatt
Shells
Series Circuit
41. A circuit with more than one path. Current branches to flow in every available path.
Non - Magnetic Material
Parallel Circuit
Wattmeter
Micro Ampere
42. 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.
Voltage Drop
Millivolt
Potential Difference
Volt
43. A circuit with only one path for current to flow. There are no branches.
Cycle
Electro- Motive Force
Series Circuit
Factors Governing Resistance
44. A circuit with two or more paths for the current to take.
Permeability
Parallel Circuit
Secondary Cell
Factors governing the Value of EMF of a Generator
45. Lines representing the direction of the magnetic force in a magnetic field.
Wattmeter
Magnetic Lines of Force
Magnetic Circuit
Ohmmeter
46. 1.Material itself (Atomic Structure - Good conductor or Bad) 2.Length of the conductor 3.Cross - sectional area (Size) 4.Temperature
Factors Governing Resistance
Volt
Storage Battery
Cycle
47. A circuit carrying three alternating currents whose cycles begin one after another. 120 electrical degrees apart.
Parallel Circuit
Three -Phase Circuit
Non - Magnetic Material
Voltmeter
48. The magnetism which a material retains after the magnetic force which magnetized it has been removed.
Frequency
Residual Magnetism
Millivolt
Magnetic Field
49. 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.
Magnetic Field
Alternating Current
Electromagnet
Resistance
50. The liquid solution (sometime a paste) in which the electrodes are placed.
Electrolyte
Electromagnet
Electron Flow
Voltmeter