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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 current which reverses in direction at regularly recurring intervals - the total flow in one direction being equal to that in the other direction.
Magnetic Pole
Alternating Current
Atom
Coulomb
2. A circuit with two or more paths for the current to take.
Rheostat
Parallel Circuit
Electron
Alternator
3. An alternating current which current cycle begins earlier than its voltage cycle.
Leading Current
Parallel Circuit
Proton
Magnetic Field
4. Coil connected to the source of power on a transformer.
Rotor
Primary Winding
Volt
Parallel Circuit
5. 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.
Secondary Cell
Series Circuit
Mega Ohm
Factors Governing Resistance
6. A short circuit between two energized conductors and/or an energized conductor and a grounded phase. Very high current flow.
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7. A certain force exhibited by some materials which give them the ability to attract other materials. Principally iron or its alloys.
Magnetism
Leading Current
Parallel Circuit
Plates
8. The unit of Electro- Motive Force
Volt
Shells
Electrolyte
Ohm's Law
9. 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.
Lines of Force
Rotor
Storage Battery
Volt
10. Fundamental constituents of matter. The 'elements' (tiny particles) which come together in various combinations to form molecules of many substances.
Secondary Cell
Alternating Current
Current
Atom
11. (Lode Stone) Certain type of mineral ore which has the natural Properties of a magnet.
Magnetism
Natural Magnet
Ohm's Law
Rotor
12. A material with few free electrons. A structure or material used to prevent the passage of current.
Insulator
Micro Ampere
Mega Ohm
Millivolt
13. Single NEGATIVE electrical charge. Orbits around the nucleus some in paths close to the nucleus - others in paths varying distance from the nucleus.
Volt
Step- Down Transformer
Electron
Electro- Motive Force
14. Hardened steel which has been magnetized artificially and which retains its magnetic properties
Short Circuit
Bound Electrons
Permanent Magnet
Nucleus
15. Positive charge of electricity. Located in the nucleus of the atom.
Insulator
Voltage Drop
Proton
Valance Electron
16. Any of the spaces occupied by the orbits of a group of electrons of approximately equal energy surronding the nucleus of an atom.
Electron
Micro Volt
Frequency
Shells
17. Those electrons in orbit nearest the nucleus - not easily dislodged from their normal orbits.
Bound Electrons
Kilowatt Hour
Lines of Force
Coulomb
18. That property of a material which determines how readily it conducts magnetic lines of flux. Opposite magnetic quality or conductivity.
Proton
Permeability
Natural Magnet
Alternating Current
19. Occurs when a stream of electrons are caused to move through a conductor.
Current
Parallel Circuit
Kilowatt
Magnetic Circuit
20. Invisible lines along which magnetic energy travels from one pole of a magnet to the other.
Magnetic Pole
Residual Magnetism
Potential Difference
Lines of Force
21. Electric charges at rest. Caused by friction of materials - where a surplus of electrons exists and may be discharged.
Static Electrical Charge
Permeability
Amp Meter
Bimetallic Strip
22. One million ohms.
Current
Primary Cell
Mega Ohm
Magnetic Poles
23. A complete sequence of events - as an alternating- current cycle.
Resistance
Cycle
Magnetic Lines of Force
Alternating Current
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.
Bimetallic Strip
Parallel Circuit
Micro Ohm
Factors Governing Resistance
25. A circuit carrying three alternating currents whose cycles begin one after another. 120 electrical degrees apart.
Bound Electrons
Three -Phase Circuit
Bimetallic Strip
Factors governing the Value of EMF of a Generator
26. Rate of electrons flow (current flow). When one 'Coulomb' of electrons pass a given point in one second.
Magnetic Material
Series Circuit
Nucleus
Ampere
27. Transformer coil connected to the load. (Output side of a transformer regardless of voltage).
Secondary Winding
Magnetic Material
Parallel Circuit
Nucleus
28. A cell which is rechargeable. Uses materials which change in compostition during delivery of current - but may be restored to original condition upon recharge.
Micro Ohm
Rotor
Bound Electrons
Secondary Cell
29. The space around a magnet in which the magnetic force is felt.
Series Circuit
Magnetic Field
Electron Flow
Voltage Drop
30. 1.Material itself (Atomic Structure - Good conductor or Bad) 2.Length of the conductor 3.Cross - sectional area (Size) 4.Temperature
Parallel Circuit
Resistor
Factors Governing Resistance
Step- Down Transformer
31. 1.Speed of conductors cutting lines of force 2.Strength of the magnetic field 3.Length of conductors cutting through the field
Potential Difference
Micro Volt
Factors governing the Value of EMF of a Generator
Resistance
32. One millionth of an ampere.
Micro Ampere
Factors Governing Resistance
Series - Parallel Circuit
Secondary Winding
33. 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.
Three -Phase Circuit
Artificial Magnet
Free Electrons
Power
34. A transformer designed to lower voltage of an alternating current. Most common type of transformer used on a power system.
Electrical Circuit
Millivolt
Step- Down Transformer
Shells
35. A material that has many free electrons thus allowing electric current to flow through it easily.
Volt
Ohmmeter
Conductor
Circuit
36. A measuring device.
Magnetic Poles
Storage Battery
Rotor
Meter
37. The area surrounding a magnet in which magnetic properties are exhibited
Ohm
Condenser
Millivolt
Magnetic Field
38. A circuit in which there is resistance (load) connected both in series and parallel.
Series - Parallel Circuit
Volt
Mega Ohm
Milliampere
39. A machine which utilizes magnetism to produce an EMF and consequently - an electric circuit.
Magnetic Material
Permeability
Electric Generator
Wattmeter
40. Several secondary cells connected together for either a greater voltage or current output.
Static Electrical Charge
Storage Battery
Voltmeter
Conductor
41. Meter used to measure resistance in an electrical circuit.
Ohmmeter
Ohm
Frequency
Volt
42. A material which CANNOT be magnetized. Example: Wood - Glass - Brass - Rubber...
Three -Phase Circuit
Rotor
Factors Governing Resistance
Non - Magnetic Material
43. The unit of resistance. It is the resistance through which a voltage of 1 volt will produce a current of 1 ampere.
Ohm
Short Circuit
Free Electrons
Storage Battery
44. A rate of movement of electrons through a conductor.
Electro- Motive Force
Current
Insulator
Millivolt
45. An instrument for measuring electric current
'Crose Phase'
Ohmmeter
Lines of Force
Amp Meter
46. Lines representing the direction of the magnetic force in a magnetic field.
Voltage Drop
Magnetic Lines of Force
Circuit
Resistance
47. Smallest part a substance can physically divided into composed of 2 or more atoms.
Electrical Circuit
Molecule
Artificial Magnet
Step-Up Transformer
48. 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.
Volt
Valance Electron
Parallel Circuit
Ohm
49. The voltage dissipation between any two points in a circuit. The voltage 'dropped' or 'dissipated' in forcing current through a resistance.
Artificial Magnet
Micro Ampere
Electron Flow
Voltage Drop
50. The process of producing an electromotive force in a conductor as a result of the cutting of magnetic lines of force by a conductor.
Alternator
Permeability
Parallel Circuit
Electromagnetic Induction