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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. NFPA;
Kilovolt amperes
National Fire Protection Association
Occupational Safety & Health Administration
Field cell
2. The adjustment of a display that results are zero on the display corresponding to a non-zero signal.
Root Mean Square
Current Proportioning
Zero Adjustment
Mil
3. A circuit element or components that allows signals of certain frequencies to pass and blocks signals of other frequencies.
PSIG
Farad
PSID
Filter
4. Normally Open.
PSIA
N.O.
Grounded Conductor
Root Mean Square
5. The basic of thermal energy. The work done by the force of one newton acting through a distance of one meter.
Power Dissipation
Conductance
Q-value
Joule
6. The measure of the ability of a material or substance to carry electrical current.
Electrolyte
Kilovolt
Joule
Conductance
7. The method by which two devices or systems are connected and interact with each other.
Underwriters Laboratories
Interface
Light Emitting Diode
Filament
8. The element inside a vacuum tube - incandescent lamp or other similar device.
Rectifier
SCR
Electrochemistry
Filament
9. 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.
Thermocouple
Kilowatt Hour
XFMR
Grounding Conductor
10. CSA ~LINK~
Vacuum
Field-Effect Transistor (FET)
Microamp
Canadian Standards Administration
11. European environmental ratings. Similar to NEMA ratings in the USA. IP;*site has NEMA comparisons ~LINK~
Filament
Ingress Protection Ratings
Gain
Response Time
12. NEMA;
National Electrical Manufacturers Association
Celsius
Supply Voltage
N.C.
13. A form of silicone dioxide. Commonly used in the making of radio transmitters and heat resistant products.
Quality Control
Make
Amp
Quartz
14. One thousandth of an inch.
UHF
Mil
Electroduct
Coulomb
15. Magnetically - opposite poles - north and south. In electricity - oppositely charged poles - positive and negative.
Polarity
Field-Effect Transistor (FET)
National Electrical Code
Transient Protection
16. The power of one watt operating for one hour - and equal to 3 -600 joules.
Watt-hour
XFMR
VOM
Light Emitting Diode
17. (AC); Electrical current that changes (or alternates) in magnitude and direction of the current at regular intervals.
Alternating Current
Q-value
Electrolysis
Quasiparticle
18. See; 'Proximity Sensor'.
Proximity Switch
National Electrical Manufacturers Association
Voltage Drop
Process Meter
19. A full-wave rectifier where the diodes are connected in a bridge circuit. This allows the current to the load during both the positive and negative alternating of the supply voltage.
Filter
Bridge Rectifier
Maximum Load Current
Canadian Standards Administration
20. A sensor or switch with the ability to detect it's relationship to a metal target without making physical contact.
Proximity Sensor
Conductance
Frequency
Y
21. A hypothetical basic subatomic nuclear particle believed to be the basic component of protons - neutrons - etc.
N.O.
Quark
Rectifier
Farad
22. Resistance Temperature Detector.
Leakage current
Zero Adjustment
Conductor
RTD
23. The range of voltage needed to maintain operation of a control or device.
Electrokinetics
Maximum Operating Temperature
Plasma
Supply Voltage
24. The maximum temperature at which a device can be safely operated.
Supply Current
Microvolt
Process Meter
Maximum Operating Temperature
25. The amount of heat needed to convert one pound of water to one pound of steam. Latent heat is expressed in BTU per pound.
Load
Absolute Zero
Process Meter
Latent heat
26. Volt-ohm Meter.
On/Off Controller
Microamp
VOM
Gain
27. A sudden and unwanted increase or decrease of supply voltage or current.
Maximum Load Current
Operating Temperature
Thermoelectricity
Transient
28. The moving of electricity or heat through a conductor.
Relay
X ray
Transient
Conduction
29. A device that converts AC voltage to pulsating DC voltage.
Milliamp
Rectifier
Capacitor
Electrokinetics
30. A unit of electrical current named after French physicist Andr
Amplifier
VF
Ampere
Bridge Rectifier
31. A solid-state switching device for semiconductors to convert AC current in one of two directions controlled by an electrode.
Response Time
Direct Current
Thyristor
Thermocouple
32. The rapid on/off cycling of a relay caused by improper signal or adjustment - faulty contacts - or other malfunction.
Efficiency
Break
Chatter
Relay
33. One millionth of a meter.
Electromagnetic field
Micron
Maximum Power Rating
Voltmeter
34. Non-conducting material used to isolate and/or insulate energized electrical components.
OR Logic
Fluorescent
Dilectric
Canadian Standards Administration
35. The amount of power that is consumed and converted to heat.
Power Supply
Manual Reset Switch
Power Dissipation
Grounding Conductor
36. A meter used to measure electrical resistance in units of ohms.
Threshold Response
National Fire Protection Association
Ohmeter
SCR
37. An electrical circuit that is not 'made'. Contacts - switches or similar devices are open and preventing the floe of current.
Transducer
Factory Mutual
Phase
Open Circuit
38. The time based relationship between a reference and a periodic function.
Threshold Response
Phase
Mil
Conductor
39. UL; ~LINK~
Potentiometer
Underwriters Laboratories
Transient Protection
Amp
40. Pounds per square inch absolute. Pressure commonly in reference to vacuum.
Latent heat
Transient Protection
PSIA
Coulomb
41. Also known as Hertz - it is the number of complete cycles of periodic waveform that occur during a time period of one second.
Electromagnetic field
Bridge Rectifier
National Electrical Code
Frequency
42. Electric and magnetic force field that surrounds a moving electric charge.
Electromagnetic field
Underwriters Laboratories
Time Delay Before Availability
Hazardous Location
43. Pounds per square inch gage. Pressure in relationship to the ambient air pressure>
PSIG
BTU
Latent heat
Transducer
44. A switch in a controller that manually resets after exceeding the controllers limit.
Manual Reset Switch
On/Off Controller
VF
Interface
45. LED; A solid state light source component that emits light or invisible infrared radiation.
Momentary switch
Light Emitting Diode
Q-value
Polarity
46. Pressure that is less than atmospheric pressure.
Amp
Electrolysis
Vacuum
Gain
47. (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'
N.C.
Transducer
Amp
Threshold Response
48. Kw; One thousand watts.
Electricity
Kilowatt
Supply Voltage
XMTR
49. RMS; AC voltage that equals DC voltage that will do the same amount of work. For an AC sine wave it is 0.707 x peak voltage.
Diode
Supply Current
Anode
Root Mean Square
50. 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.
Transient
N.C.
Ground
Plasma