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Test your basic knowledge |
Basic Electricity Vocab
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Subject
:
engineering
Instructions:
Answer 50 questions in 15 minutes.
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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 center portion of an atom which has a positive electrical charge.
Current
Magnetic Field
Millivolt
Nucleus
2. 1.Material itself (Atomic Structure - Good conductor or Bad) 2.Length of the conductor 3.Cross - sectional area (Size) 4.Temperature
Magnetic Field
Factors Governing Resistance
Millivolt
Fuse
3. An alternating current which current cycle begins later that its voltage cycle.
Lagging Current
Secondary Cell
Potential Difference
Conductor
4. An alternating current which current cycle begins earlier than its voltage cycle.
Ohm
Armature
Leading Current
Current
5. 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
Secondary Cell
Magnetic Material
Condenser
6. A circuit with two or more paths for the current to take.
Kilowatt Hour
Parallel Circuit
Wattmeter
Magnetism
7. 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
Volt
Electrode
Residual Magnetism
8. A transformer designed to lower voltage of an alternating current. Most common type of transformer used on a power system.
Primary Winding
Step- Down Transformer
Ohm
Storage Battery
9. The unit of resistance. It is the resistance through which a voltage of 1 volt will produce a current of 1 ampere.
Ohm
Molecule
Parallel Circuit
Bimetallic Strip
10. An instrument for measuring electrical power. Most common use: The meter of your house to measure electrical consumption.
Electro- Motive Force
Electron
Permeability
Wattmeter
11. The space around a magnet in which the magnetic force is felt.
Magnetic Field
Lines of Force
Plates
Impedance
12. The path of an electric current. To permit a steady flow of current - the path must be complete. Commonly - a complete circuit includes a device for the production of an electromotive force - connecting wires - and a device supplied with electricity.
Impedance
Circuit
Proton
Magnetism
13. A circuit in which there is resistance (load) connected both in series and parallel.
Magnetic Lines of Force
Magnetic Field
Current
Series - Parallel Circuit
14. A circuit with more than one path. Current branches to flow in every available path.
Parallel Circuit
Secondary Winding
Shells
Electron
15. Fundamental constituents of matter. The 'elements' (tiny particles) which come together in various combinations to form molecules of many substances.
Atom
Power
Magnetic Material
Ohmmeter
16. Iron and certain alloys of iron which are magnetized by artificial means.
Resistor
Magnetic Lines of Force
Artificial Magnet
Static Electrical Charge
17. A unit of power; equal to 550 foot- pounds per second of approximately 746 watts.
Horsepower
Molecule
Non - Magnetic Material
Power
18. A very low resistance path placed in a circuit in such a manner as to allow an excessive current flow.
Voltage Drop
Voltmeter
Nucleus
Short Circuit
19. The electrodes of a cell shaped as plates to expose a surface as possible to the electrolyte.
Plates
Lines of Force
Molecule
Proton
20. A short circuit between two energized conductors and/or an energized conductor and a grounded phase. Very high current flow.
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21. 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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22. The area surrounding a magnet in which magnetic properties are exhibited
Magnetic Field
Ohm
Step- Down Transformer
Frequency
23. A resistor designed so that its resistance is readily adjusted.
Step-Up Transformer
Natural Magnet
Power
Rheostat
24. Those electrons in orbits farthest out from the nucleus - loosely bound and migrate from one atom to another.
Primary Cell
Free Electrons
Potential Difference
Voltmeter
25. 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.
Proton
Bound Electrons
Magnetic Lines of Force
Series Circuit
26. An instrument for measuring electric current
Impedance
Amp Meter
Three -Phase Circuit
Electromagnetic Induction
27. A rate of movement of electrons through a conductor.
Electrical Circuit
Current
Proton
Circuit
28. A device used to change the voltage of an alternating current circuit.
Magnetic Circuit
Transformer
Bound Electrons
Secondary Cell
29. One millionth of an ampere.
Magnetic Circuit
Micro Volt
Current
Micro Ampere
30. 1.Speed of conductors cutting lines of force 2.Strength of the magnetic field 3.Length of conductors cutting through the field
Series Circuit
Frequency
Electron
Factors governing the Value of EMF of a Generator
31. Coil connected to the source of power on a transformer.
Primary Winding
Primary Cell
Milliampere
Plates
32. A cell which is composed of certain materials which are used up during the process of delivering electric current.
Electric Generator
Voltmeter
Nucleus
Primary Cell
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.
Power
Circuit
Nucleus
Proton
34. The liquid solution (sometime a paste) in which the electrodes are placed.
Non - Magnetic Material
Bound Electrons
Electron Flow
Electrolyte
35. Single NEGATIVE electrical charge. Orbits around the nucleus some in paths close to the nucleus - others in paths varying distance from the nucleus.
Electron
Bimetallic Strip
Series Circuit
Permanent Magnet
36. A unit of work or ENERGY. 1 kilowatt hour = 1 -000 watt hours
Rheostat
Kilowatt Hour
Magnetic Field
Condenser
37. 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)
Molecule
Magnetic Pole
Step-Up Transformer
Volt
38. A device which capacity is its chief electrical property; a device for storing or holding an electric charge; a capacitor.
Condenser
Resistance
Primary Winding
Circuit
39. 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.
Micro Ampere
'Crose Phase'
Bimetallic Strip
Magnetic Lines of Force
40. One million ohms.
Proton
Kilowatt
Mega Ohm
Permanent Magnet
41. Transformer coil connected to the load. (Output side of a transformer regardless of voltage).
Secondary Winding
Insulator
Electrical Circuit
Free Electrons
42. Rate of electrons flow (current flow). When one 'Coulomb' of electrons pass a given point in one second.
Ohm
Ampere
Non - Magnetic Material
Micro Volt
43. A current limiting device designed to melt and break the circuit when a specified current is exceeded. (The weakest point in a circuit)
Fuse
Residual Magnetism
Wattmeter
Impedance
44. (EMF) The force created by an electric generator (or by other means) which causes current to flow. (Same as Voltage - Volts - Electric Potential - Pressure).
Atom
Free Electrons
Resistance
Electro- Motive Force
45. Single POSITIVE electrical charge - located in the middle of an atom.
Micro Ampere
Circuit
Proton
Micro Volt
46. A cell which is rechargeable. Uses materials which change in compostition during delivery of current - but may be restored to original condition upon recharge.
Non - Magnetic Material
Magnetic Material
Secondary Cell
Permanent Magnet
47. The dissimilar metals which are placed in an electrolyte to form a cell.
Circuit
Electrolyte
Proton
Electrode
48. A material with few free electrons. A structure or material used to prevent the passage of current.
Insulator
Rheostat
Voltmeter
Primary Winding
49. A circuit carrying three alternating currents whose cycles begin one after another. 120 electrical degrees apart.
Electric Generator
Three -Phase Circuit
Current
Conductor
50. 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.
Magnetic Material
Mega Ohm
Volt
Artificial Magnet
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