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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. The dissimilar metals which are placed in an electrolyte to form a cell.
Nucleus
Milliampere
Electrode
Frequency
2. 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
Valance Electron
Series Circuit
Cycle
3. The complete path through which the lines of force travel - leaving the north pole and re- entering the south pole.
Wattmeter
Fuse
Magnetic Circuit
Ohm's Law
4. A material that has many free electrons thus allowing electric current to flow through it easily.
Non - Magnetic Material
Resistor
Free Electrons
Conductor
5. The liquid solution (sometime a paste) in which the electrodes are placed.
Wattmeter
Electrolyte
Milliampere
Electromagnet
6. One- thousandth of a ampere
Short Circuit
Electromagnet
Milliampere
Impedance
7. A transformer designed to lower voltage of an alternating current. Most common type of transformer used on a power system.
Amp Meter
Step- Down Transformer
Current
Static Electrical Charge
8. The magnetism which a material retains after the magnetic force which magnetized it has been removed.
Residual Magnetism
Micro Ampere
Voltmeter
Primary Cell
9. Fundamental constituents of matter. The 'elements' (tiny particles) which come together in various combinations to form molecules of many substances.
Wattmeter
Coulomb
Potential Difference
Atom
10. A circuit carrying three alternating currents whose cycles begin one after another. 120 electrical degrees apart.
Cycle
Factors Governing Resistance
Conductor
Three -Phase Circuit
11. Single NEGATIVE electrical charge. Orbits around the nucleus some in paths close to the nucleus - others in paths varying distance from the nucleus.
Series Circuit
Ohm's Law
Power
Electron
12. An instrument for measuring electrical power. Most common use: The meter of your house to measure electrical consumption.
Wattmeter
Series - Parallel Circuit
Electron
Artificial Magnet
13. The rotating member of an electrical machine.
Rotor
Factors Governing Resistance
Magnetic Field
Short Circuit
14. A circuit in which there is resistance (load) connected both in series and parallel.
Permeability
Electromagnetic Induction
Magnetic Field
Series - Parallel Circuit
15. A cell which is rechargeable. Uses materials which change in compostition during delivery of current - but may be restored to original condition upon recharge.
Power
Alternator
Secondary Cell
Proton
16. A transformer designed to raise the voltage of an alternating current. Most common use; In a generating plant to raise the voltage.
'Crose Phase'
Armature
Magnetic Field
Step-Up Transformer
17. Total and complete opposition to the flow of electrons
Positive Plate
Rotor
Impedance
Free Electrons
18. 1.Material itself (Atomic Structure - Good conductor or Bad) 2.Length of the conductor 3.Cross - sectional area (Size) 4.Temperature
Factors Governing Resistance
Leading Current
Free Electrons
Millivolt
19. An instrument for measuring electric current
Amp Meter
Series - Parallel Circuit
Volt
Electromagnetic Induction
20. Rate of electrons flow (current flow). When one 'Coulomb' of electrons pass a given point in one second.
Magnetism
Ampere
Ohm
Conductor
21. The space around a magnet in which the magnetic force is felt.
Molecule
Transformer
Magnetic Field
Storage Battery
22. Invisible lines along which magnetic energy travels from one pole of a magnet to the other.
Electron
Micro Ohm
Current
Lines of Force
23. Opposition to current flow
Parallel Circuit
Resistance
Shells
Fuse
24. Those electrons in orbit nearest the nucleus - not easily dislodged from their normal orbits.
Rheostat
Potential Difference
Series - Parallel Circuit
Bound Electrons
25. The unit of Electro- Motive Force
Resistor
Circuit
Volt
Magnetic Pole
26. Lines representing the direction of the magnetic force in a magnetic field.
Magnetic Lines of Force
Amp Meter
Ohm
Micro Ohm
27. A material which CANNOT be magnetized. Example: Wood - Glass - Brass - Rubber...
Magnetic Field
Non - Magnetic Material
Secondary Cell
Artificial Magnet
28. A material which can be magnetized - principally iron.
Factors Governing Resistance
Magnetic Material
Static Electrical Charge
Current
29. A material with few free electrons. A structure or material used to prevent the passage of current.
Micro Ohm
Magnetic Field
Primary Cell
Insulator
30. 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.
Voltage Drop
Permeability
Current
Magnetic Pole
31. Hardened steel which has been magnetized artificially and which retains its magnetic properties
'Crose Phase'
Permanent Magnet
Electrolyte
Resistor
32. 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.
Nucleus
Electro- Motive Force
Volt
Ohmmeter
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.
Residual Magnetism
Power
Electron
Magnetic Material
34. A cell which is composed of certain materials which are used up during the process of delivering electric current.
Primary Cell
Magnetic Material
Storage Battery
Electron Flow
35. The unit of resistance. It is the resistance through which a voltage of 1 volt will produce a current of 1 ampere.
Current
Ohm
Volt
Lagging Current
36. Single POSITIVE electrical charge - located in the middle of an atom.
Proton
Three -Phase Circuit
Frequency
Rotor
37. Negative charge of electricity
Electron Flow
Electron
Valance Electron
Transformer
38. A current which reverses in direction at regularly recurring intervals - the total flow in one direction being equal to that in the other direction.
Electrode
Magnetic Material
Alternating Current
Voltage Drop
39. In a battery - the electrode which takes up the electrons returning from the external circuit.
Positive Plate
Molecule
Series - Parallel Circuit
Wattmeter
40. Any of the spaces occupied by the orbits of a group of electrons of approximately equal energy surronding the nucleus of an atom.
Shells
Leading Current
Positive Plate
Electron Flow
41. The property of a material that opposes the flow of current.
Leading Current
Resistance
Electron
Bound Electrons
42. A circuit with more than one path. Current branches to flow in every available path.
Voltage Drop
Parallel Circuit
Permeability
Magnetic Material
43. (Lode Stone) Certain type of mineral ore which has the natural Properties of a magnet.
Voltage Drop
Parallel Circuit
Watt
Natural Magnet
44. A circuit with only one path for current to flow. There are no branches.
Series Circuit
Proton
Secondary Cell
Magnetism
45. A measuring device.
Ohm's Law
Static Electrical Charge
Meter
Volt
46. Shows relationship between Current - Voltage - Wattage and Resistance.
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47. A generator that produces alternating current.
Series Circuit
Alternator
Leading Current
Micro Volt
48. One million ohms.
Bound Electrons
Secondary Cell
Current
Mega Ohm
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.
Electromagnet
Static Electrical Charge
Parallel Circuit
Resistor
50. A machine which utilizes magnetism to produce an EMF and consequently - an electric circuit.
Electric Generator
Resistance
Nucleus
Primary Winding