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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. A certain force exhibited by some materials which give them the ability to attract other materials. Principally iron or its alloys.
Permeability
Magnetic Poles
Artificial Magnet
Magnetism
2. A short circuit between two energized conductors and/or an energized conductor and a grounded phase. Very high current flow.
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3. The process of producing an electromotive force in a conductor as a result of the cutting of magnetic lines of force by a conductor.
Electromagnetic Induction
Impedance
Magnetic Material
Primary Winding
4. A material that has many free electrons thus allowing electric current to flow through it easily.
Conductor
Shells
Step-Up Transformer
Step- Down Transformer
5. 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.
Static Electrical Charge
Volt
Series - Parallel Circuit
Permeability
6. Fundamental constituents of matter. The 'elements' (tiny particles) which come together in various combinations to form molecules of many substances.
Meter
Atom
Resistance
Micro Volt
7. Electric charges at rest. Caused by friction of materials - where a surplus of electrons exists and may be discharged.
Circuit
Static Electrical Charge
Parallel Circuit
Kilowatt Hour
8. 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
Circuit
Plates
Positive Plate
9. Rate of electrons flow (current flow). When one 'Coulomb' of electrons pass a given point in one second.
Primary Cell
Magnetic Circuit
Ampere
Meter
10. Single POSITIVE electrical charge - located in the middle of an atom.
Amp Meter
Proton
Factors Governing Resistance
Voltmeter
11. Any of the spaces occupied by the orbits of a group of electrons of approximately equal energy surronding the nucleus of an atom.
Residual Magnetism
Shells
Cycle
Volt
12. The condition where the free electrons are caused to move in the same direction along or through a conductor.
Static Electrical Charge
Electron Flow
Amp Meter
Free Electrons
13. Transformer coil connected to the load. (Output side of a transformer regardless of voltage).
Molecule
Factors governing the Value of EMF of a Generator
Secondary Winding
Natural Magnet
14. A circuit with only one path for current to flow. There are no branches.
Transformer
Plates
Series Circuit
Wattmeter
15. 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.
Watt
Primary Cell
Power
Valance Electron
16. A device used to change the voltage of an alternating current circuit.
Leading Current
Resistance
Free Electrons
Transformer
17. The moving part of a dynamo or motor consisting of coils of wire around an iron core.
Leading Current
Armature
Watt
Potential Difference
18. 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.
Electromagnet
Current
Electron Flow
Molecule
19. The voltage dissipation between any two points in a circuit. The voltage 'dropped' or 'dissipated' in forcing current through a resistance.
Electric Generator
Voltage Drop
Atom
Magnetic Circuit
20. An instrument for measuring electromotive force in volts. It must be connected across the load that causes the votage drop.
Valance Electron
Voltmeter
Electrical Circuit
Current
21. Positive charge of electricity. Located in the nucleus of the atom.
Magnetic Pole
Voltmeter
Proton
Voltage Drop
22. A unit of POWER. 1 kilowatt = 1 -000 watts
Series - Parallel Circuit
Micro Ampere
Shells
Kilowatt
23. Those electrons in orbits farthest out from the nucleus - loosely bound and migrate from one atom to another.
Magnetic Lines of Force
Factors Governing Resistance
Circuit
Free Electrons
24. A circuit in which there is resistance (load) connected both in series and parallel.
Electron
Magnetism
Factors Governing Resistance
Series - Parallel Circuit
25. Certain quantity of electrons. The unit of measure that specifies the rate at which electric current flows per second.
Rotor
Magnetic Field
Coulomb
Insulator
26. Meter used to measure resistance in an electrical circuit.
Proton
Micro Ohm
Milliampere
Ohmmeter
27. The center portion of an atom which has a positive electrical charge.
Magnetic Poles
Frequency
Natural Magnet
Nucleus
28. A unit of power.
Watt
Non - Magnetic Material
Micro Volt
Condenser
29. Occurs when a stream of electrons are caused to move through a conductor.
Electro- Motive Force
Cycle
'Crose Phase'
Current
30. 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)
Conductor
Watt
'Crose Phase'
Magnetic Pole
31. An alternating current which current cycle begins later that its voltage cycle.
Rotor
Lagging Current
Magnetic Pole
Series - Parallel Circuit
32. One- thousandth of a ampere
Electromagnetic Induction
Non - Magnetic Material
Series Circuit
Milliampere
33. A very low resistance path placed in a circuit in such a manner as to allow an excessive current flow.
Current
Magnetic Field
Short Circuit
Leading Current
34. The number of cycles per second. Example: 60 cycles per second alternating current.
Millivolt
Ohm's Law
Three -Phase Circuit
Frequency
35. A machine which utilizes magnetism to produce an EMF and consequently - an electric circuit.
Non - Magnetic Material
Horsepower
Ohm's Law
Electric Generator
36. Several secondary cells connected together for either a greater voltage or current output.
Secondary Winding
Storage Battery
Magnetic Circuit
Natural Magnet
37. Smallest part a substance can physically divided into composed of 2 or more atoms.
Molecule
Primary Cell
Armature
Permanent Magnet
38. A unit of work or ENERGY. 1 kilowatt hour = 1 -000 watt hours
Lines of Force
Valance Electron
Insulator
Kilowatt Hour
39. Any device which may be placed in the circuit and which offers opposition to the flow of electrons around the circuit.
'Crose Phase'
Non - Magnetic Material
Resistor
Frequency
40. A unit of power; equal to 550 foot- pounds per second of approximately 746 watts.
Primary Cell
Electron
Current
Horsepower
41. A generator that produces alternating current.
Artificial Magnet
Leading Current
Alternator
Coulomb
42. A transformer designed to raise the voltage of an alternating current. Most common use; In a generating plant to raise the voltage.
Magnetic Poles
Potential Difference
Parallel Circuit
Step-Up Transformer
43. 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
Electrolyte
Step-Up Transformer
Storage Battery
44. A resistor designed so that its resistance is readily adjusted.
Armature
Rheostat
Kilowatt
Molecule
45. A material which CANNOT be magnetized. Example: Wood - Glass - Brass - Rubber...
Horsepower
Magnetic Poles
Non - Magnetic Material
Short Circuit
46. The liquid solution (sometime a paste) in which the electrodes are placed.
Electrolyte
Insulator
Step-Up Transformer
Short Circuit
47. One millionth of an ampere.
Electrical Circuit
Micro Ampere
Current
Secondary Cell
48. The unit of resistance. It is the resistance through which a voltage of 1 volt will produce a current of 1 ampere.
Insulator
Positive Plate
Permanent Magnet
Ohm
49. An instrument for measuring electric current
Alternator
Amp Meter
'Crose Phase'
Ohm
50. The space around a magnet in which the magnetic force is felt.
Micro Ampere
Circuit
Magnetic Field
Parallel Circuit