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Electrical Components
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Subject
:
engineering
Instructions:
Answer 50 questions in 15 minutes.
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study here
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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. Also known as Hertz - it is the number of complete cycles of periodic waveform that occur during a time period of one second.
System International
Frequency
PSIA
Infrared
2. A panel meter with zero and span adjustments - commonly scaled for signals such as 1-5 volts - 4-20mA - etc.
Process Meter
Millivolt
Ampere
Thyristor
3. ISO;
Vector
XFMR
International Organization for Standardization
Quasiparticle
4. One millionth of a meter.
Interface
Factory Mutual
Micron
Modulated Light Source Control
5. The mechanism of a switch which operates the contacts.
Actuator
Supply Voltage
Conduit
Grounded
6. The measure of the ability of a material or substance to carry electrical current.
Grounded
Conductance
I
Latching logic
7. The power of one watt operating for one hour - and equal to 3 -600 joules.
Watt-hour
Magnetic Flux
Make
Conduit
8. Intensity. The commonly used symbol used to represent Amperes when used in formulas. I = Intensity = Current = Amps = Amperes.
Power Supply
I
Electron
BTU
9. A switch with contacts that are made with actuating force and released when that force is removed.
VF
Transistor
Momentary switch
Gain
10. The method by which two devices or systems are connected and interact with each other.
Actuator
System International
Interface
Charge
11. European environmental ratings. Similar to NEMA ratings in the USA. IP;*site has NEMA comparisons ~LINK~
PSID
Transducer
Ingress Protection Ratings
Rheostat
12. A switch in a controller that manually resets after exceeding the controllers limit.
Electrokinetics
Manual Reset Switch
Threshold Response
Proximity Sensor
13. A circuit element or components that allows signals of certain frequencies to pass and blocks signals of other frequencies.
Efficiency
American National Standards Institute
Filter
Beta
14. 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.
Mueller Bridge
Underwriters Laboratories
Magnetic Flux
Thermocouple
15. A high-intensity incandescent lamp with a quartz bulb containing an inert gas of iodine or bromine vapor.
Triac
Quartziodine Lamp
Process Meter
N.C.
16. EPA; ~LINK~
Flux
Microvolt
Electron
Environmental Protection Agency
17. A device incorporating semiconductor material and suitable contacts capable of performing electrical functions (such as voltage - current or power amplification) with low power requirements.
Amp
Electron
Factory Mutual
Transistor
18. See; 'Proximity Sensor'.
Proximity Switch
Amp
Kilovolt
Thermistor
19. The current that is gained by a transistor when it is connected in a common emitter circuit.
Environmental Protection Agency
Beta
Ohmeter
Vector
20. An electrical circuit that is not 'made'. Contacts - switches or similar devices are open and preventing the floe of current.
Cycle
Conduction
Amp
Open Circuit
21. The rate of transfer of energy.
Quartz
Flux
Institute of Electrical and Electronics Engineers
Transient
22. A positive (+) electrode. The point where electrons exit from a device to the external electric circuit.
Quantum
Field cell
Anode
Dilectric
23. A process that is kept at a constant temperature.
Hard Wired
Volt
Isothermal
Vector
24. The pronounced curvature in reverse voltage current that is characteristic of a diode.
Zener Effect
Instrument Society of America
OR Logic
Fluorescent
25. Symbol used to denote transformer.
Leakage current
Ground
XFMR
International Electrotechnical Commission
26. The rate at which electricity flows - measured in amperes - 1 ampere = 1 coulomb per second.
Electrodynamic
Conductance
Current
Maximum Load Current
27. ANSI;
American National Standards Institute
Weber
Diode
PSID
28. A coil of wire wound about a magnetic material - such as iron - that produces a magnetic field when current flows through the wire.
Isothermal
Electromagnetic field
Coulomb
Electromagnet
29. That part of a circuit which is physically interconnected.
Dilectric
Quartziodine Lamp
Hard Wired
Electric circuit
30. Output power divided by input power - (work performed in ratio to energy used to produce it).
Efficiency
Make
Conductance
Underwriters Laboratories
31. 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
Frequency
Amp
Flux
Relay
32. A device having two terminals and has a low resistance to electrical current in one direction and a high resistance in the other direction.
Voltmeter
Diode
Intrinsically safe
Filter
33. Pounds per square inch absolute. Pressure commonly in reference to vacuum.
Zener Effect
RFI
Microamp
PSIA
34. A meter used to measure units of volts.
Zero Adjustment
Underwriters Laboratories
Voltmeter
Modulated Light Source Control
35. The range of voltage needed to maintain operation of a control or device.
Ohmeter
Circuit
Supply Voltage
I
36. One millionth of an amp.
Microamp
Ohmeter
Maximum Power Rating
Alternating Current
37. The amount of heat needed to convert one pound of water to one pound of steam. Latent heat is expressed in BTU per pound.
Absolute Zero
Latent heat
System International
Canadian Standards Administration
38. When there is current through a semiconductor p-n junction it is the resistance of a forward-biased junction.
Forward resistance
Current
Charge
Transducer
39. A hypothetical nuclear of a quark plus an antiproton.
VHF
Transient Protection
Quap
Microvolt
40. Resistance Temperature Detector.
XFMR
Coulomb
RTD
Dilectric
41. The behavior of charged particles and the steady motion of charge in magnetic and electric fields.
Velocity
Chatter
Electrokinetics
Power Dissipation
42. Protective circuitry to guard against spikes that might be induced on the supply line.
Conductor
Volt
Zero Adjustment
Transient Protection
43. A rise and fall of voltage - current - or other faction that would be constant under normal conditions. A pulse that is intentionally induced will have a finite duration time.
Process Meter
Infrared
Pulse
Mueller Bridge
44. 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.
UHF
Latching logic
Root Mean Square
RTD
45. A form of control where the power supplied to a process is controlled by limiting the phase angle of the line voltage.
Amplifier
Open Circuit
SCR
Phase Proportioning
46. Two dissimilar metals connected at a point - that produce an electrical current whose magnitude is dependent upon the temperature at the junction point.
Thermocouple
Ohmeter
Grounded
Electrode
47. Kw; One thousand watts.
Watt-hour
National Fire Protection Association
Kilowatt
Quantum
48. A unit of electrical current named after French physicist Andr
Magnetic Field
Ampere
PID
VOM
49. A device that transfers power or energy from one system to another - such as taking a physical quality and changing it to an electrical signal.
Underwriters Laboratories
Transducer
Grounding Conductor
RTD
50. Volt-ohm Meter.
Electrokinetics
Amplifier
VOM
Latent heat
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