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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. An area in which combustible or flammable mixtures are or could be present.
Magnetic Field
Electrode
Fluorescent
Hazardous Location
2. 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.
Capacitor
Ground
Root Mean Square
Thermocouple
3. An interconnected arrangement of parts for carrying high-voltage electricity.
Modulated Light Source Control
Electroduct
Thermocouple
X ray
4. The resistance to electrical current. Resistance is measured in ohms.
Conductor
Y
Current Proportioning
Resistance
5. 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
Ohm
Relay
Thermocouple
Latent heat
6. The amount of time it takes for a device to react to an input signal.
International Electrotechnical Commission
AWG
Response Time
RTD
7. See; 'Proximity Sensor'.
Grounded Conductor
National Fire Protection Association
Amp
Proximity Switch
8. Chemical changes and energy produced by electric currents.
Transient Protection
Electrochemistry
Zero Adjustment
Alternating Current
9. Kw; One thousand watts.
Process Meter
Amp
PID
Kilowatt
10. A device having two terminals and has a low resistance to electrical current in one direction and a high resistance in the other direction.
Watt
Hard Wired
Diode
PID
11. Radio Frequency Interference.
PID
RFI
Millimeter
Impedance
12. Two dissimilar metals connected at a point - that produce an electrical current whose magnitude is dependent upon the temperature at the junction point.
Thermocouple
Forward resistance
Joule
Pulse
13. When there is current through a semiconductor p-n junction it is the resistance of a forward-biased junction.
Transistor
Forward resistance
Gain
Momentary switch
14. Mm; One thousandth of a meter.
Phase Proportioning
AWG
Millimeter
Power Dissipation
15. Electric and magnetic force field that surrounds a moving electric charge.
Amp
Electromagnetic field
Load
Ground
16. Silicone Controlled Rectifier.
Supply Voltage
SCR
Electric circuit
Proximity Switch
17. UL; ~LINK~
Manual Reset Switch
Supply Current
Underwriters Laboratories
Actuator
18. A small current leaking from an output device in the off state caused by semiconductor characteristics.
Zener Diode
Leakage current
National Fire Protection Association
Anode
19. The standard that is used to make comparison measurements or calibrations.
Transducer
Anode
Working Standard
Threshold Response
20. An arrangement of any of various conductors through which electric current can flow from a supply current.
Conduit
Electric circuit
Electromagnet
Grounded Conductor
21. An electrical circuit that increases the power - voltage or current of an applied signal.
Actuator
Amplifier
PSIG
National Fire Protection Association
22. The maximum temperature at which a device can be safely operated.
Grounded
Maximum Operating Temperature
Amplifier
Ohm
23. FM; ~LINK~
Factory Mutual
Voltage Drop
Weber
Electroduct
24. That part of a circuit which is physically interconnected.
Volt
Pulse
Hard Wired
I
25. Response to the change in the level of the input signal.
Threshold Response
Absolute Zero
Forward Voltage
Millimeter
26. One millionth of an amp.
Microamp
Ground
Mean Temperature
Kilowatt Hour
27. 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.
UHF
Watt-hour
Transducer
Proximity Sensor
28. The interaction of magnetism and electrical current.
Field-Effect Transistor (FET)
Kilowatt
Thyristor
Electrodynamic
29. The method by which two devices or systems are connected and interact with each other.
Interface
Kilowatt Hour
Cycle
Delta
30. 'British Thermal Unit' - the amount of thermal energy required to raise one pound of water 1degree F. One BTU is equal to .293 watt hours. One kWh is equal to 3412 BTUs.
BTU
Flux
Grounded
Supply Voltage
31. The output that is produced when one or more inputs are present.
National Electrical Code
X ray
Plasma
OR Logic
32. The mechanism of a switch which operates the contacts.
PSID
RFI
Rectifier
Actuator
33. The power of one watt operating for one hour - and equal to 3 -600 joules.
Transient Protection
Frequency
Light Emitting Diode
Watt-hour
34. Pressure that is less than atmospheric pressure.
Flux
Mil
Series Circuit
Vacuum
35. A three terminal semiconductor device. In a 'FET' the current is from source to drain because a conducting channel is formed by a voltage field between the gate and the source.
Kilovolt amperes
Field-Effect Transistor (FET)
Ohm
Conductance
36. Pounds per square inch gage. Pressure in relationship to the ambient air pressure>
Institute of Electrical and Electronics Engineers
Weber
PSIG
Grounded
37. 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.
Quap
Grounding Conductor
Hazardous Location
Cycle
38. The energy delivered by a circuit or device. The electrical signal produced by the input to the transducer.
International Brotherhood of Electrical Workers
Isothermal
Transient Protection
Output
39. 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
Quartziodine Lamp
Mean Temperature
Intrinsically safe
Millimeter
40. The maximum watts that a device can safely handle.
Electrokinetics
Potentiometer
Institute of Electrical and Electronics Engineers
Maximum Power Rating
41. Resistance Temperature Detector.
Micron
RTD
Efficiency
Output
42. A variable resistor.
Fluorescent
International Electrotechnical Commission
Rheostat
Intrinsically safe
43. Very High Frequency.
Polarity
Threshold Response
VHF
Chatter
44. A switch in a controller that manually resets after exceeding the controllers limit.
Manual Reset Switch
Mil
Kilowatt Hour
Dilectric
45. EPA; ~LINK~
CMV
Microamp
PSID
Environmental Protection Agency
46. 'American Wire Gauge' system used to determine wire size.
Modulated Light Source Control
AWG
Mean Temperature
Electrolysis
47. In a three phase connection all three phases are connected in series thus forming a closed circuit.
Delta
Cycle Time
Quartz
Zener Diode
48. ISA;
Charge
Thermocouple
Instrument Society of America
Institute of Electrical and Electronics Engineers
49. The difference in potential measured between two points caused by resistance or impedance.
N.O.
Voltage Drop
SCR
Power Dissipation
50. A switch with contacts that are made with actuating force and released when that force is removed.
Momentary switch
Millivolt
Diode
Kilovolt