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Test your basic knowledge |
Electrical Components
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 electrical demand of a process. Load can be expressed or calculated as amps (current) - ohms (resistance) or watts (power).
Power Supply
Electrode
M
Load
2. Also known as Hertz - it is the number of complete cycles of periodic waveform that occur during a time period of one second.
Maximum Load Current
Frequency
Amp
Current Proportioning
3. In a temperature controller it is the output form that provides a current proportional to the amount of control that is required. Commonly it is the 4 to 20 milliamp current proportioning band that is used in the electronics industry.
Operating Temperature
XFMR
Current Proportioning
Magnetic Blow-out Switch
4. (DC); Electrical current that flows consistently in one direction only.
Direct Current
Conduction
Latching logic
Impedance
5. A device - instrument or component that will not produce any spark or thermal effects under any conditions that are normal or abnormal that will ignite a specified gas mixture. Electrical and thermal energy limits are at levels incapable of causing i
Quantum
Cycle
Intrinsically safe
Milliamp
6. Or Hertz; The measurement of the time period of one alternating electric current. In the United States this is commonly 60 cycles per second - or 60 Hertz.
I
Cycle
Magnetic Blow-out Switch
Electrolyte
7. 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.
Supply Voltage
BTU
X ray
Field cell
8. Intensity. The commonly used symbol used to represent Amperes when used in formulas. I = Intensity = Current = Amps = Amperes.
Environmental Protection Agency
M
Canadian Standards Administration
I
9. A hypothetical basic subatomic nuclear particle believed to be the basic component of protons - neutrons - etc.
Conduction
Quark
PSIA
Rectifier
10. CSA ~LINK~
CMV
Quap
Threshold Response
Canadian Standards Administration
11. An electrically conductive fused salt or a solution where the charge is carried by ionic movement.
Electrolyte
Potentiometer
Kilowatt Hour
Transducer
12. Symbol used for wye configuration for three phase electrical connections.
Maximum Power Rating
Y
Cathode
Resistance
13. The time it takes for a controller to complete one on/off cycle.
Actuator
Cycle Time
Latching logic
Load
14. The opposition to electrical flow.
Impedance
Light Emitting Diode
Capacitor
Latent heat
15. A negative (-) electrode. The point of entry of electrons into a device from an external circuit. The negative electrode of a semiconductor diode.
Kilowatt Hour
Kilovolt
Cathode
Modulated Light Source Control
16. Symbol used to denote transmitter.
XMTR
Farad
RFI
Latching logic
17. European environmental ratings. Similar to NEMA ratings in the USA. IP;*site has NEMA comparisons ~LINK~
Ingress Protection Ratings
VOM
Maximum Power Rating
Electrokinetics
18. The current that is gained by a transistor when it is connected in a common emitter circuit.
Beta
Modulated Light Source Control
Proximity Switch
Transient Protection
19. NEMA;
Forward resistance
National Electrical Manufacturers Association
Charge
Thyristor
20. The maximum temperature at which a device can be safely operated.
Maximum Operating Temperature
Joule
Forward resistance
Kilovolt amperes
21. Expressed in webers - it is the product of the average normal component of the magnetic intensity over a surface and the area of that surface.
Electric circuit
Light Emitting Diode
Magnetic Flux
Anode
22. A sudden and unwanted increase or decrease of supply voltage or current.
National Electrical Manufacturers Association
Output
Isothermal
Transient
23. A reference point at zero potential with respect to the earth. In an electronic circuit it is the common return path for electric current. A conducting connection between the earth and an electrical circuit or electrical equipment. Also - the negativ
Electric circuit
Pulse
Ground
Kilowatt
24. A sensor or switch with the ability to detect it's relationship to a metal target without making physical contact.
Proximity Sensor
Magnetic Field
VF
Occupational Safety & Health Administration
25. The difference in potential measured between two points caused by resistance or impedance.
Electrolyte
Charge
Voltage Drop
Threshold Response
26. Normally Open.
PSIA
Y
Millimeter
N.O.
27. Pounds per square inch absolute. Pressure commonly in reference to vacuum.
Time Delay Before Availability
Grounding Conductor
PSIA
Phase Proportioning
28. That part of a circuit which is physically interconnected.
Electrochemistry
Micron
Hard Wired
Rheostat
29. Kva; One thousand volt amps.
Kilovolt amperes
Quap
Filter
N.O.
30. OSHA;
Anode
Electrodynamic
Manual Reset Switch
Occupational Safety & Health Administration
31. NFPA;
Cathode
National Fire Protection Association
Instrument Society of America
Gain
32. The method by which two devices or systems are connected and interact with each other.
Infrared
Proximity Sensor
Bridge Rectifier
Interface
33. Magnetically - opposite poles - north and south. In electricity - oppositely charged poles - positive and negative.
Field-Effect Transistor (FET)
Dilectric
Millimeter
Polarity
34. A device having two terminals and has a low resistance to electrical current in one direction and a high resistance in the other direction.
Diode
Root Mean Square
Plasma
Actuator
35. A circuit element or components that allows signals of certain frequencies to pass and blocks signals of other frequencies.
Kilovolt
Filter
National Fire Protection Association
Grounded Conductor
36. A coil of wire wound about a magnetic material - such as iron - that produces a magnetic field when current flows through the wire.
Forward resistance
Institute of Electrical and Electronics Engineers
Magnetic Flux
Electromagnet
37. The pronounced curvature in reverse voltage current that is characteristic of a diode.
Output
Power Supply
Weber
Zener Effect
38. The time delay between the output signal and the response time of the receiver of the signal.
Current Proportioning
Power Dissipation
Latent heat
Lag
39. The quality of having the ability to emit light when struck by electrons or another form of radiation.
Zener Effect
Fluorescent
Ampere
Microvolt
40. LED; A solid state light source component that emits light or invisible infrared radiation.
N.C.
Light Emitting Diode
Alternating Current
Manual Reset Switch
41. Variable Frequency.
Conduit
VF
Diode
PID
42. A circuit conductor that is grounded to become part of the electric circuit by design and intent.
Transient
Coulomb
Grounded Conductor
Flux
43. Inspection - analysis and action required to ensure quality of output.
Quality Control
Light Emitting Diode
Electromagnet
Forward resistance
44. The increase of the power level - current or voltage of a signal. In an amplifier it is the ratio of the output to the input signal levels.
Gain
Transducer
Leakage current
Power Dissipation
45. In a three phase connection all three phases are connected in series thus forming a closed circuit.
Delta
Grounded
Celsius
Make
46. A device used to store electrical energy in an electrostatic field until discharge.
Capacitor
Volt
I
International Electrotechnical Commission
47. A unit of electric charge. The amount of charge conveyed in one second by one ampere.
Proximity Sensor
Coulomb
International Electrotechnical Commission
Zener Effect
48. The rapid on/off cycling of a relay caused by improper signal or adjustment - faulty contacts - or other malfunction.
Hard Wired
Chatter
Bridge Rectifier
Modulated Light Source Control
49. A positive (+) electrode. The point where electrons exit from a device to the external electric circuit.
Anode
X ray
Millimeter
Occupational Safety & Health Administration
50. The form of radiation used to make non-contact temperature measurements. In the electromagnetic spectrum it is the area beyond red light from 760 nanometers to 1000 microns.
Canadian Standards Administration
Ohmeter
Electron
Infrared