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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. Symbol for Mega - one million.
M
American National Standards Institute
Actuator
System International
2. A process that is kept at a constant temperature.
Celsius
Direct Current
System International
Isothermal
3. A region of space that surrounds a moving electrical charge or a magnetic pole - in which the electrical charge or magnetic pole experiences a force that is above the electrostatic ones associated with particles at rest.
Infrared
Maximum Load Current
Quantum Electronics
Magnetic Field
4. The interaction of magnetism and electrical current.
Zero Adjustment
Instrument Society of America
Coulomb
Electrodynamic
5. A solid-state switching device for semiconductors to convert AC current in one of two directions controlled by an electrode.
Thyristor
Vacuum
Relay
Vector
6. A hypothetical basic subatomic nuclear particle believed to be the basic component of protons - neutrons - etc.
Quap
Charge
PSID
Quark
7. A switch in a controller that manually resets after exceeding the controllers limit.
Zener Diode
Root Mean Square
Ripple
Manual Reset Switch
8. IBEW;
Thermoelectricity
Transducer
International Brotherhood of Electrical Workers
Electric circuit
9. Output power divided by input power - (work performed in ratio to energy used to produce it).
RTD
Forward Voltage
Efficiency
Voltage Drop
10. ISO;
Maximum Operating Temperature
International Organization for Standardization
Time Delay Before Availability
Electrochemistry
11. (DC); Electrical current that flows consistently in one direction only.
Ripple
Voltmeter
XMTR
Direct Current
12. An arrangement of any of various conductors through which electric current can flow from a supply current.
Efficiency
Electric circuit
Current
Isothermal
13. A tube - pipe or trough that carries and protects electric wiring.
M
Micron
Conduit
Proximity Sensor
14. One thousandth of an inch.
AWG
Quantum Electronics
Electrokinetics
Mil
15. The element inside a vacuum tube - incandescent lamp or other similar device.
Anode
Magnetic Flux
Filament
Milliamp
16. To close an electrical circuit. To establish an electrical circuit through the closing of a contact - switch or other related device.
Make
XFMR
Zener Effect
OR Logic
17. A device used to store electrical energy in an electrostatic field until discharge.
Flux
Alternating Current
Capacitor
Electron
18. One millionth of an amp.
Filament
Microamp
Open Circuit
Infrared
19. The time it takes for a controller to complete one on/off cycle.
Institute of Electrical and Electronics Engineers
PSIG
Cycle Time
Quasiparticle
20. Very High Frequency.
VF
Quark
Occupational Safety & Health Administration
VHF
21. A small current leaking from an output device in the off state caused by semiconductor characteristics.
Leakage current
Forward Voltage
Conduit
Polarity
22. Normally Closed.
Proximity Switch
N.C.
XFMR
Open Circuit
23. The maximum temperature at which a device can be safely operated.
National Fire Protection Association
Maximum Operating Temperature
Efficiency
Occupational Safety & Health Administration
24. A coil of wire wound about a magnetic material - such as iron - that produces a magnetic field when current flows through the wire.
Current Proportioning
Quartz
Micron
Electromagnet
25. The quality of having the ability to emit light when struck by electrons or another form of radiation.
Filter
Fluorescent
National Electrical Code
Diode
26. A meter used to measure electrical resistance in units of ohms.
Thermistor
Absolute Zero
Ohmeter
PSID
27. The power of one watt operating for one hour - and equal to 3 -600 joules.
Watt-hour
Millivolt
Electrochemistry
Grounding Conductor
28. An electrically conductive fused salt or a solution where the charge is carried by ionic movement.
Current Proportioning
Transistor
Microamp
Electrolyte
29. A sensor or switch with the ability to detect it's relationship to a metal target without making physical contact.
Millivolt
Factory Mutual
Proximity Sensor
Forward Voltage
30. A negative (-) electrode. The point of entry of electrons into a device from an external circuit. The negative electrode of a semiconductor diode.
Isothermal
Cycle Time
Transient
Cathode
31. Resistance Temperature Detector.
Amp
RTD
Ingress Protection Ratings
Interface
32. The basic of thermal energy. The work done by the force of one newton acting through a distance of one meter.
Joule
Field cell
Millimeter
Supply Current
33. 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.
Transducer
National Fire Protection Association
Frequency
Q-value
34. MA; One thousandth of an amp.
Joule
Milliamp
Electromagnetic field
Electrolysis
35. A unit of electrical current named after French physicist Andr
Current Proportioning
Lag
Direct Current
Ampere
36. Two dissimilar metals connected at a point - that produce an electrical current whose magnitude is dependent upon the temperature at the junction point.
Latent heat
Kilowatt
Thermocouple
Dilectric
37. 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.
Institute of Electrical and Electronics Engineers
Amplifier
Electricity
Quartz
38. A panel meter with zero and span adjustments - commonly scaled for signals such as 1-5 volts - 4-20mA - etc.
Output
Transducer
Leakage current
Process Meter
39. 'Common Mode Voltage.' The voltage which is tolerable between signal and ground.
CMV
Microvolt
Rectifier
Quasiparticle
40. One millionth of a meter.
Environmental Protection Agency
On/Off Controller
Micron
Rectifier
41. A fluctuation in the intensity of a steady current.
Resistance
Latent heat
Ripple
Canadian Standards Administration
42. Electrical energy produced by the action of heat.
Thermoelectricity
Y
Working Standard
VF
43. One of the very small discrete packets into which many forms of energy are subdivided.
Quantum
Maximum Power Rating
Proximity Switch
M
44. 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.
Modulated Light Source Control
National Electrical Code
Process Meter
OR Logic
45. The maximum watts that a device can safely handle.
Current
Process Meter
Voltage Drop
Maximum Power Rating
46. (AC); Electrical current that changes (or alternates) in magnitude and direction of the current at regular intervals.
American National Standards Institute
Mueller Bridge
Alternating Current
Capacitor
47. Also known as Hertz - it is the number of complete cycles of periodic waveform that occur during a time period of one second.
Millimeter
Chatter
Frequency
Vacuum
48. Electric and magnetic force field that surrounds a moving electric charge.
Modulated Light Source Control
VHF
Electromagnetic field
Root Mean Square
49. See; 'Proximity Sensor'.
Mil
Transient Protection
Velocity
Proximity Switch
50. A meter used to measure units of volts.
Voltmeter
Watt
Electrochemistry
Quantum
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