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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. A sudden and unwanted increase or decrease of supply voltage or current.
Transient
Electromagnet
Working Standard
Filament
2. A tube - pipe or trough that carries and protects electric wiring.
Conduit
Potentiometer
PID
Electrolysis
3. 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.
Cycle
Thyristor
Kilowatt Hour
Fluorescent
4. 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.
Ampere
PSID
Magnetic Flux
Thyristor
5. An arrangement of any of various conductors through which electric current can flow from a supply current.
PSIG
Microvolt
Electric circuit
Supply Voltage
6. Kwh; One thousand watt-hours.
Impedance
Conduit
Transistor
Kilowatt Hour
7. SI; The standard metric system of units.
Flux
Electroduct
Supply Current
System International
8. Response to the change in the level of the input signal.
Watt
Anode
Threshold Response
Quasiparticle
9. 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.
Field cell
On/Off Controller
Celsius
Electric circuit
10. 'American Wire Gauge' system used to determine wire size.
Transducer
AWG
Electric circuit
Transistor
11. A unit of energy in solid-state physics with mass and momentum but that does not exist as a free particle.
XFMR
Quasiparticle
Microvolt
Ripple
12. Variable Frequency.
Millivolt
Magnetic Flux
Light Emitting Diode
VF
13. A switching device used in switching high DC loads. It contains a small permanent magnet which deflects arc in order to quench it.
System International
Supply Current
Ground
Magnetic Blow-out Switch
14. The amount of heat needed to convert one pound of water to one pound of steam. Latent heat is expressed in BTU per pound.
Latent heat
Proximity Switch
Ohmeter
Operating Temperature
15. Pounds per square inch gage. Pressure in relationship to the ambient air pressure>
PSIG
National Electrical Code
Kilowatt Hour
Anode
16. One millionth of a meter.
Anode
Micron
Latent heat
Capacitor
17. Electrical energy produced by the action of heat.
RFI
Millivolt
Thermoelectricity
Series Circuit
18. Resistance Temperature Detector.
Relay
RTD
Electric circuit
Momentary switch
19. A device that converts AC voltage to pulsating DC voltage.
Latching logic
Rectifier
Grounded
National Fire Protection Association
20. 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.
Flux
Current Proportioning
Millimeter
Kilowatt
21. A device having two terminals and has a low resistance to electrical current in one direction and a high resistance in the other direction.
Efficiency
Electroduct
Diode
Institute of Electrical and Electronics Engineers
22. Radio Frequency Interference.
RFI
Volt
Power Dissipation
Electrolyte
23. The electrical demand of a process. Load can be expressed or calculated as amps (current) - ohms (resistance) or watts (power).
Ampere
Load
Zero Adjustment
Micron
24. Current Consumption. The amount of amps or milliamps needed to maintain operation of a control or device.
Canadian Standards Administration
Infrared
Maximum Power Rating
Supply Current
25. An electrical circuit that is not 'made'. Contacts - switches or similar devices are open and preventing the floe of current.
Open Circuit
Ingress Protection Ratings
Microvolt
Forward Voltage
26. The unit of power. One watt equals one joule per second - 1/746th horsepower.
Watt
Light Emitting Diode
Transducer
Alternating Current
27. One millionth of an amp.
Electrolysis
Microamp
Celsius
Latent heat
28. UL; ~LINK~
Underwriters Laboratories
PSID
Gain
Hard Wired
29. A switch with contacts that are made with actuating force and released when that force is removed.
Volt
Y
Quasiparticle
Momentary switch
30. The element inside a vacuum tube - incandescent lamp or other similar device.
Transient Protection
Capacitor
Relay
Filament
31. A circuit element or components that allows signals of certain frequencies to pass and blocks signals of other frequencies.
Quark
Filter
Ohm
Power Supply
32. The maximum watts that a device can safely handle.
Maximum Power Rating
Institute of Electrical and Electronics Engineers
Momentary switch
Canadian Standards Administration
33. Also known as Hertz - it is the number of complete cycles of periodic waveform that occur during a time period of one second.
Electrodynamic
Weber
Frequency
Maximum Power Rating
34. To close an electrical circuit. To establish an electrical circuit through the closing of a contact - switch or other related device.
Response Time
Cycle Time
Make
Conductance
35. The method by which two devices or systems are connected and interact with each other.
Ground
Gain
Interface
Maximum Power Rating
36. A form of silicone dioxide. Commonly used in the making of radio transmitters and heat resistant products.
Electrochemistry
Quartz
Polarity
Supply Current
37. A highly accurate bridge configuration that is used to measure three-wire RTD thermometers.
Mueller Bridge
Zero Adjustment
PSIA
XFMR
38. The standard that is used to make comparison measurements or calibrations.
Working Standard
Ampere
XFMR
Ohmeter
39. Pounds per square inch differential. The difference in pressure between two points.
Break
Process Meter
Chatter
PSID
40. See; 'Maximum Power Rating'.
Factory Mutual
Absolute Zero
Maximum Load Current
Zero Adjustment
41. A circuit conductor that is grounded to become part of the electric circuit by design and intent.
Thermocouple
Grounded Conductor
Field cell
Weber
42. 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
Fluorescent
Leakage current
Conductance
43. 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
Y
Intrinsically safe
RTD
Transistor
44. A device incorporating semiconductor material and suitable contacts capable of performing electrical functions (such as voltage - current or power amplification) with low power requirements.
Dilectric
Manual Reset Switch
Intrinsically safe
Transistor
45. 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.
Filter
Quartz
Millivolt
Infrared
46. Pressure that is less than atmospheric pressure.
Vacuum
Zener Effect
Y
Manual Reset Switch
47. (DC); Electrical current that flows consistently in one direction only.
Light Emitting Diode
Direct Current
Anode
Underwriters Laboratories
48. Protective circuitry to guard against spikes that might be induced on the supply line.
Q-value
Transient Protection
Joule
Mean Temperature
49. The conductor that is used by intent to connect the grounded circuit of an electrical wiring system or equipment to a grounding electrode with reference to earth.
Capacitor
Grounding Conductor
Diode
Micron
50. An anode (+) or cathode (-) conductor on a device through which an electric current passes.
Mueller Bridge
Fluorescent
Electrode
Chatter