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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. Negative charge of electricity
Power
Rheostat
Atom
Electron
2. A machine which utilizes magnetism to produce an EMF and consequently - an electric circuit.
Electromagnetic Induction
Step-Up Transformer
Electric Generator
Natural Magnet
3. In a battery - the electrode which takes up the electrons returning from the external circuit.
Magnetic Circuit
Permeability
Kilowatt Hour
Positive Plate
4. Occurs when a stream of electrons are caused to move through a conductor.
Resistor
Voltage Drop
Current
Alternating Current
5. A generator that produces alternating current.
Micro Ampere
Voltage Drop
Magnetic Material
Alternator
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.
Artificial Magnet
Electromagnetic Induction
Plates
Milliampere
7. Any of the spaces occupied by the orbits of a group of electrons of approximately equal energy surronding the nucleus of an atom.
Shells
Proton
Magnetic Circuit
Voltage Drop
8. The electrodes of a cell shaped as plates to expose a surface as possible to the electrolyte.
Plates
Ohm
Conductor
Parallel Circuit
9. The rotating member of an electrical machine.
Factors governing the Value of EMF of a Generator
Secondary Cell
Non - Magnetic Material
Rotor
10. One millionth of an ohm.
Frequency
Non - Magnetic Material
Micro Ohm
Electron Flow
11. 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)
Plates
Lines of Force
Secondary Winding
Magnetic Pole
12. Total and complete opposition to the flow of electrons
Electrolyte
Permeability
Circuit
Impedance
13. A material that has many free electrons thus allowing electric current to flow through it easily.
Circuit
Electrolyte
Conductor
Proton
14. Those electrons in orbits farthest out from the nucleus - loosely bound and migrate from one atom to another.
Three -Phase Circuit
Short Circuit
Free Electrons
Permeability
15. One millionth of an ampere.
Magnetic Field
Micro Ampere
Magnetic Pole
Secondary Winding
16. A unit of POWER. 1 kilowatt = 1 -000 watts
Alternator
Non - Magnetic Material
Kilowatt
Primary Cell
17. The center portion of an atom which has a positive electrical charge.
Storage Battery
Nucleus
Residual Magnetism
Insulator
18. A unit of work or ENERGY. 1 kilowatt hour = 1 -000 watt hours
Kilowatt Hour
Atom
Micro Ampere
Fuse
19. 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
Milliampere
Electrode
Secondary Cell
Electrical Circuit
20. Certain quantity of electrons. The unit of measure that specifies the rate at which electric current flows per second.
Alternator
Milliampere
Circuit
Coulomb
21. The unit of resistance. It is the resistance through which a voltage of 1 volt will produce a current of 1 ampere.
Ohm
Free Electrons
Watt
Mega Ohm
22. Single POSITIVE electrical charge - located in the middle of an atom.
Magnetic Circuit
Factors governing the Value of EMF of a Generator
Proton
Resistance
23. Electric charges at rest. Caused by friction of materials - where a surplus of electrons exists and may be discharged.
Natural Magnet
Rheostat
Static Electrical Charge
Resistor
24. 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.
Voltage Drop
Micro Volt
Circuit
Amp Meter
25. 1.Speed of conductors cutting lines of force 2.Strength of the magnetic field 3.Length of conductors cutting through the field
Current
Factors Governing Resistance
Alternating Current
Factors governing the Value of EMF of a Generator
26. A measuring device.
Meter
Lagging Current
Shells
Rheostat
27. The complete path through which the lines of force travel - leaving the north pole and re- entering the south pole.
Voltage Drop
Condenser
Electromagnet
Magnetic Circuit
28. 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
Cycle
Conductor
Natural Magnet
29. A complete sequence of events - as an alternating- current cycle.
Three -Phase Circuit
Milliampere
Cycle
Molecule
30. A certain force exhibited by some materials which give them the ability to attract other materials. Principally iron or its alloys.
Magnetism
Magnetic Material
Resistance
Ohm
31. (EMF) The force created by an electric generator (or by other means) which causes current to flow. (Same as Voltage - Volts - Electric Potential - Pressure).
Ohm's Law
Millivolt
Rotor
Electro- Motive Force
32. The property of a material that opposes the flow of current.
Resistance
Potential Difference
Conductor
Voltage Drop
33. A current limiting device designed to melt and break the circuit when a specified current is exceeded. (The weakest point in a circuit)
Fuse
Atom
Primary Winding
Milliampere
34. Several secondary cells connected together for either a greater voltage or current output.
Milliampere
Magnetic Field
Storage Battery
Insulator
35. A circuit in which there is resistance (load) connected both in series and parallel.
Magnetic Field
Impedance
Wattmeter
Series - Parallel Circuit
36. One- thousandth of a ampere
Milliampere
Parallel Circuit
Nucleus
Electrode
37. An instrument for measuring electrical power. Most common use: The meter of your house to measure electrical consumption.
Bimetallic Strip
Wattmeter
Artificial Magnet
Electron
38. Any device which may be placed in the circuit and which offers opposition to the flow of electrons around the circuit.
Residual Magnetism
Electron Flow
Resistor
Alternating Current
39. A circuit carrying three alternating currents whose cycles begin one after another. 120 electrical degrees apart.
Ohm's Law
Current
Millivolt
Three -Phase Circuit
40. 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.
Milliampere
Volt
Voltmeter
Valance Electron
41. A cell which is rechargeable. Uses materials which change in compostition during delivery of current - but may be restored to original condition upon recharge.
Magnetic Pole
Secondary Cell
Power
Condenser
42. Rate of electrons flow (current flow). When one 'Coulomb' of electrons pass a given point in one second.
Ampere
Primary Winding
Electro- Motive Force
Lines of Force
43. Those electrons in orbit nearest the nucleus - not easily dislodged from their normal orbits.
Bound Electrons
Voltmeter
Residual Magnetism
Magnetic Field
44. A device which capacity is its chief electrical property; a device for storing or holding an electric charge; a capacitor.
Armature
Condenser
Horsepower
Magnetic Field
45. A very low resistance path placed in a circuit in such a manner as to allow an excessive current flow.
'Crose Phase'
Short Circuit
Nucleus
Ohm's Law
46. Coil connected to the source of power on a transformer.
Mega Ohm
Short Circuit
Primary Winding
Ohmmeter
47. An instrument for measuring electric current
Milliampere
Electron
Amp Meter
Primary Cell
48. The dissimilar metals which are placed in an electrolyte to form a cell.
Electric Generator
Factors Governing Resistance
Power
Electrode
49. The unit of Electro- Motive Force
Non - Magnetic Material
Magnetic Material
Volt
Electron
50. A short circuit between two energized conductors and/or an energized conductor and a grounded phase. Very high current flow.
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