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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. ANSI;
Ampere
Forward resistance
American National Standards Institute
VHF
2. A highly accurate bridge configuration that is used to measure three-wire RTD thermometers.
Mueller Bridge
Quartz
Thermoelectricity
Electromagnet
3. NEMA;
SCR
National Electrical Manufacturers Association
Environmental Protection Agency
X ray
4. 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
Current
BTU
Proximity Switch
5. Symbol used to denote transmitter.
XMTR
PSIG
CMV
Proximity Switch
6. A sensor or switch with the ability to detect it's relationship to a metal target without making physical contact.
Coulomb
Proximity Sensor
Momentary switch
Millimeter
7. A form of silicone dioxide. Commonly used in the making of radio transmitters and heat resistant products.
Quartz
Supply Voltage
Phase
Quantum Electronics
8. OSHA;
Occupational Safety & Health Administration
Micron
American National Standards Institute
Potentiometer
9. The power of one watt operating for one hour - and equal to 3 -600 joules.
International Brotherhood of Electrical Workers
Power Supply
Watt-hour
OR Logic
10. To close an electrical circuit. To establish an electrical circuit through the closing of a contact - switch or other related device.
Make
Anode
Amplifier
Canadian Standards Administration
11. In a three phase connection all three phases are connected in series thus forming a closed circuit.
Delta
Circuit
Gain
RTD
12. The opposition to electrical flow.
Field cell
Microamp
Intrinsically safe
Impedance
13. An arrangement of any of various conductors through which electric current can flow from a supply current.
Resistance
Electric circuit
Response Time
Environmental Protection Agency
14. Output power divided by input power - (work performed in ratio to energy used to produce it).
Output
Plasma
Threshold Response
Efficiency
15. 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.
Field cell
Current Proportioning
Magnetic Blow-out Switch
Vector
16. Radio Frequency Interference.
Millimeter
Field-Effect Transistor (FET)
RFI
Q-value
17. UL; ~LINK~
Farad
Potentiometer
Factory Mutual
Underwriters Laboratories
18. Kva; One thousand volt amps.
Cycle
Kilovolt amperes
Conduit
Electrode
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.
Quantum Electronics
Bridge Rectifier
Isothermal
Response Time
20. The amount of energy released in a nuclear reaction. It is expressed in atomic mass units - or in million electron volts (MEV).
Kilowatt Hour
American National Standards Institute
Supply Voltage
Q-value
21. The unit of power. One watt equals one joule per second - 1/746th horsepower.
Rectifier
PSIA
VOM
Watt
22. Non-conducting material used to isolate and/or insulate energized electrical components.
Maximum Operating Temperature
Electrolyte
Dilectric
Electroduct
23. The maximum watts that a device can safely handle.
Actuator
XFMR
Field-Effect Transistor (FET)
Maximum Power Rating
24. 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
Rectifier
Magnetic Blow-out Switch
PSIA
25. 'American Wire Gauge' system used to determine wire size.
Vacuum
Lag
Electromagnetic field
AWG
26. A fluctuation in the intensity of a steady current.
Make
Vacuum
Ripple
Alternating Current
27. A high-intensity incandescent lamp with a quartz bulb containing an inert gas of iodine or bromine vapor.
Transient
Quantum
Magnetic Field
Quartziodine Lamp
28. The resistance to electrical current. Resistance is measured in ohms.
Resistance
Voltmeter
National Fire Protection Association
Make
29. IEC;
M
Capacitor
International Electrotechnical Commission
Mueller Bridge
30. MV; One thousandth of a volt. The difference in potential needed to cause a current of one milliampere flow through a resistance of one ohm.
Ingress Protection Ratings
PID
Millivolt
AWG
31. The pronounced curvature in reverse voltage current that is characteristic of a diode.
Q-value
International Organization for Standardization
Zener Effect
Field-Effect Transistor (FET)
32. Very High Frequency.
Isothermal
SCR
Coulomb
VHF
33. A coil of wire wound about a magnetic material - such as iron - that produces a magnetic field when current flows through the wire.
Isothermal
Load
Electromagnet
Forward resistance
34. A small current leaking from an output device in the off state caused by semiconductor characteristics.
Leakage current
Watt
OR Logic
Quartziodine Lamp
35. 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.
Power Dissipation
Hard Wired
Anode
Cycle
36. A silicone semiconductor that maintains a fixed voltage in a circuit.
Gain
Potentiometer
Current
Zener Diode
37. The modification of a signal that causes the output to remain energized until it is released by intent.
National Electrical Manufacturers Association
Millivolt
Leakage current
Latching logic
38. LED; A solid state light source component that emits light or invisible infrared radiation.
National Electrical Manufacturers Association
BTU
Alternating Current
Light Emitting Diode
39. A positive (+) electrode. The point where electrons exit from a device to the external electric circuit.
Process Meter
Rectifier
Anode
Canadian Standards Administration
40. A switch in a controller that manually resets after exceeding the controllers limit.
Grounded Conductor
Interface
Manual Reset Switch
PSID
41. NEC: A set of regulations pertaining to electrical installation and design in the interest of the protection of life and property. The NEC is adopted by NFPA and approved by ANSI. It is the preferred standard of guidelines used by most electrical reg
Output
National Electrical Code
International Electrotechnical Commission
Ripple
42. A controller whose action is either fully on or off.
Instrument Society of America
On/Off Controller
PSIG
National Electrical Manufacturers Association
43. A panel meter with zero and span adjustments - commonly scaled for signals such as 1-5 volts - 4-20mA - etc.
Ampere
Process Meter
Break
Direct Current
44. Voltage; The unit of electromotive force (EMF) that causes current to flow. One volt causes a current of one amp through a resistance of one ohm.
Y
Millivolt
Volt
N.O.
45. The range of temperature over which a device may be safely used. The temperature range which the device has been designed to operate.
Supply Voltage
Latent heat
Magnetic Blow-out Switch
Operating Temperature
46. European environmental ratings. Similar to NEMA ratings in the USA. IP;*site has NEMA comparisons ~LINK~
Filter
Supply Current
Ingress Protection Ratings
Quantum Electronics
47. The adjustment of a display that results are zero on the display corresponding to a non-zero signal.
Electrodynamic
Zero Adjustment
Grounded
Supply Current
48. A hypothetical nuclear of a quark plus an antiproton.
Quantum
Conduit
Quap
OR Logic
49. Mm; One thousandth of a meter.
Field-Effect Transistor (FET)
Celsius
Millimeter
Hazardous Location
50. Normally Closed.
N.C.
Momentary switch
Relay
Open Circuit