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Test your basic knowledge |
Electrical Components
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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. Electric current passing through an electrolyte which produces chemical changes in it.
Phase Proportioning
Electrolysis
Threshold Response
Forward Voltage
2. SI; The standard metric system of units.
Response Time
System International
Quap
Maximum Operating Temperature
3. Electric and magnetic force field that surrounds a moving electric charge.
Electromagnetic field
Beta
Kilovolt amperes
Grounding Conductor
4. A device that converts AC voltage to pulsating DC voltage.
Rectifier
Hard Wired
N.C.
Millivolt
5. To close an electrical circuit. To establish an electrical circuit through the closing of a contact - switch or other related device.
National Electrical Manufacturers Association
Break
Make
Quantum Electronics
6. The current that is gained by a transistor when it is connected in a common emitter circuit.
Farad
Hard Wired
Beta
Frequency
7. Symbol for Mega - one million.
M
National Electrical Manufacturers Association
Quality Control
Joule
8. Kw; One thousand watts.
Kilowatt
Leakage current
Hard Wired
Maximum Power Rating
9. Kwh; One thousand watt-hours.
Filter
Maximum Load Current
Watt-hour
Kilowatt Hour
10. The rate of transfer of energy.
Magnetic Field
Flux
Diode
Vacuum
11. The basic of thermal energy. The work done by the force of one newton acting through a distance of one meter.
Impedance
Momentary switch
Plasma
Joule
12. A tube - pipe or trough that carries and protects electric wiring.
Conduit
Q-value
Environmental Protection Agency
Process Meter
13. Two dissimilar metals connected at a point - that produce an electrical current whose magnitude is dependent upon the temperature at the junction point.
Thermocouple
PID
Microvolt
Millivolt
14. Kva; One thousand volt amps.
Electrokinetics
Charge
Circuit
Kilovolt amperes
15. MLS; A photoelectric control that operates on pulsed infrared radiation at a specific frequency - and responds only to that frequency of pulse. MLS is used frequently in areas where ambient light may cause problems with other types of sensors.
CMV
Modulated Light Source Control
Ampere
Make
16. The pronounced curvature in reverse voltage current that is characteristic of a diode.
RTD
Latent heat
Zener Effect
PID
17. A circuit element or components that allows signals of certain frequencies to pass and blocks signals of other frequencies.
Potentiometer
Filter
N.O.
Watt
18. NFPA;
Joule
Electrochemistry
VF
National Fire Protection Association
19. UL; ~LINK~
Underwriters Laboratories
Ohmeter
Forward resistance
Actuator
20. A form of energy produced by the flow of particles of matter and consists of commonly attractive positively (protons [+]) and negatively (electrons [-]) charged atomic particles. A stream of electrons - or an electric current.
Electricity
Environmental Protection Agency
Current
National Fire Protection Association
21. Non-conducting material used to isolate and/or insulate energized electrical components.
Modulated Light Source Control
BTU
Dilectric
Amplifier
22. The act of the opening of an electrical circuit.
Beta
Break
Filter
Grounding Conductor
23. A circuit which may have one or many resistors and/or other various devices connected in a series so that the current has only one path to follow.
Plasma
Instrument Society of America
Series Circuit
Electrokinetics
24. Current Consumption. The amount of amps or milliamps needed to maintain operation of a control or device.
Supply Current
Quantum
Electricity
PSIA
25. A coil of wire wound about a magnetic material - such as iron - that produces a magnetic field when current flows through the wire.
Joule
Electromagnet
Current
Proximity Sensor
26. Resistance Temperature Detector.
RTD
Flux
Conductor
Watt
27. The time delay between the output signal and the response time of the receiver of the signal.
Threshold Response
Quality Control
Kilovolt amperes
Lag
28. A meter used to measure units of volts.
Voltmeter
Zener Effect
XMTR
Alternating Current
29. A highly accurate bridge configuration that is used to measure three-wire RTD thermometers.
Proximity Switch
Power Dissipation
Mueller Bridge
Threshold Response
30. Commonly used in generators and motors - it is an electromagnet formed from a coil of insulated wire that is wound around a soft iron core.
VF
Quartziodine Lamp
Field cell
I
31. Mm; One thousandth of a meter.
Electromagnetic field
Fluorescent
Millimeter
System International
32. MA; One thousandth of an amp.
Milliamp
Ohmeter
Maximum Power Rating
Working Standard
33. See; 'Maximum Power Rating'.
Electrodynamic
Maximum Load Current
Triac
Micron
34. A Solid State relay is a switching device that completes or interrupts a circuit electrically and has no moving parts. A Mechanical relay is an electromechanical device that closes contacts to complete a circuit or opens contacts to interrupt a circu
Quartz
Relay
Electric circuit
Instrument Society of America
35. A switching device used in switching high DC loads. It contains a small permanent magnet which deflects arc in order to quench it.
Grounded
Maximum Operating Temperature
Magnetic Blow-out Switch
Joule
36. IEC;
International Electrotechnical Commission
Time Delay Before Availability
Mueller Bridge
Thermistor
37. The magnitude and time phase of a quantity - represented by a plotted line.
Quantum Electronics
Institute of Electrical and Electronics Engineers
Vector
Electromagnet
38. Normally Closed.
Resistance
N.C.
Filament
Electricity
39. A temperature scale. Also known as centigrade. Sea level water will freeze at 0
Weber
Quality Control
Field cell
Celsius
40. Also known as Hertz - it is the number of complete cycles of periodic waveform that occur during a time period of one second.
RFI
Proximity Sensor
Frequency
Electrokinetics
41. (ampere)The basic unit of current in an electrical circuit. One ampere is the rate of flow of electric current when one coulomb of charge flows past a point in the circuit in one second. Symbolically characterized by the letter 'I' and sometimes 'A'
Circuit
On/Off Controller
Amp
N.C.
42. The rate at which electricity flows - measured in amperes - 1 ampere = 1 coulomb per second.
Threshold Response
Field cell
Current
Voltmeter
43. That part of a circuit which is physically interconnected.
Load
Electroduct
Thermistor
Hard Wired
44. A three terminal semiconductor device. In a 'FET' the current is from source to drain because a conducting channel is formed by a voltage field between the gate and the source.
XFMR
Kilowatt
Mil
Field-Effect Transistor (FET)
45. The unit for capacitance. A capacitor that stored one coulomb of charge with one volt across it will have a value of one farad.
Field-Effect Transistor (FET)
Farad
Electrochemistry
Milliamp
46. An electrical resistor composed of semiconductor material - whose resistance is a known rapidly varying function of temperature.
Transistor
On/Off Controller
I
Thermistor
47. An electrically conductive fused salt or a solution where the charge is carried by ionic movement.
National Electrical Code
Operating Temperature
Electrolyte
Institute of Electrical and Electronics Engineers
48. An ionized gas containing about equal numbers of positive and negative charges - which is a good conductor of electricity - and is affected by a magnetic field.
Plasma
Transducer
Canadian Standards Administration
Operating Temperature
49. The measured amount of electrical energy that represents the electrostatic forces between atomic particles. The nucleus of an atom has a positive charge (+) and the electrons have a negative charge(-).
Anode
Vacuum
International Brotherhood of Electrical Workers
Charge
50. LED; A solid state light source component that emits light or invisible infrared radiation.
Manual Reset Switch
Light Emitting Diode
Load
Polarity
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