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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. 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.
Millivolt
Magnetic Blow-out Switch
International Brotherhood of Electrical Workers
Filter
2. Kw; One thousand watts.
Manual Reset Switch
Conduction
Kilowatt
Conductance
3. A coil of wire wound about a magnetic material - such as iron - that produces a magnetic field when current flows through the wire.
Magnetic Flux
Proximity Sensor
Farad
Electromagnet
4. A positive (+) electrode. The point where electrons exit from a device to the external electric circuit.
Electron
Anode
Microamp
Cathode
5. An area in which combustible or flammable mixtures are or could be present.
Voltage Drop
Mil
Hazardous Location
Open Circuit
6. A sensor or switch with the ability to detect it's relationship to a metal target without making physical contact.
Transient Protection
Capacitor
National Electrical Code
Proximity Sensor
7. The act of the opening of an electrical circuit.
Latching logic
Break
Canadian Standards Administration
Maximum Power Rating
8. To close an electrical circuit. To establish an electrical circuit through the closing of a contact - switch or other related device.
Load
Transient
Make
Thermistor
9. The quality of having the ability to emit light when struck by electrons or another form of radiation.
Fluorescent
Occupational Safety & Health Administration
Quasiparticle
Milliamp
10. The average temperature of a process.
Mean Temperature
VHF
Quap
Electrode
11. Intensity. The commonly used symbol used to represent Amperes when used in formulas. I = Intensity = Current = Amps = Amperes.
Amp
I
Proximity Switch
Current Proportioning
12. The moving of electricity or heat through a conductor.
Conduction
Millivolt
Milliamp
Y
13. A panel meter with zero and span adjustments - commonly scaled for signals such as 1-5 volts - 4-20mA - etc.
Process Meter
Thermistor
UHF
Proximity Switch
14. A solid-state switching device used in switching AC wave forms.
Mean Temperature
Triac
System International
Thermocouple
15. The pronounced curvature in reverse voltage current that is characteristic of a diode.
Leakage current
Grounding Conductor
Electricity
Zener Effect
16. The form of radiation used to make non-contact temperature measurements. In the electromagnetic spectrum it is the area beyond red light from 760 nanometers to 1000 microns.
Circuit
CMV
Frequency
Infrared
17. The modification of a signal that causes the output to remain energized until it is released by intent.
Plasma
N.O.
RTD
Latching logic
18. Kva; One thousand volt amps.
Conduction
Thermoelectricity
VHF
Kilovolt amperes
19. 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.
Make
Lag
Field-Effect Transistor (FET)
Field cell
20. CSA ~LINK~
Quality Control
Milliamp
Canadian Standards Administration
Microamp
21. The maximum temperature at which a device can be safely operated.
PID
Actuator
Instrument Society of America
Maximum Operating Temperature
22. The part of a circuit that supplies power to the entire circuit or part of the circuit. Usually a separate unit that supplies power to a specific part of the circuit in a system.
Occupational Safety & Health Administration
Power Supply
Direct Current
American National Standards Institute
23. Symbol used for wye configuration for three phase electrical connections.
Make
Bridge Rectifier
Maximum Operating Temperature
Y
24. Mm; One thousandth of a meter.
Ground
National Electrical Code
Joule
Millimeter
25. The mechanism of a switch which operates the contacts.
Actuator
On/Off Controller
Quantum
Current
26. The current that is gained by a transistor when it is connected in a common emitter circuit.
Rheostat
Beta
Electromagnetic field
Proximity Switch
27. Commonly used in generators and motors - it is an electromagnet formed from a coil of insulated wire that is wound around a soft iron core.
Infrared
Field cell
Cycle Time
Zener Diode
28. 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.
Root Mean Square
Magnetic Field
Milliamp
Conduit
29. The element inside a vacuum tube - incandescent lamp or other similar device.
Filament
Rectifier
Grounded Conductor
Thermistor
30. A hypothetical basic subatomic nuclear particle believed to be the basic component of protons - neutrons - etc.
SCR
Cycle Time
Quark
Conduit
31. The amount of power that is consumed and converted to heat.
Power Dissipation
Transistor
Forward Voltage
Bridge Rectifier
32. kV; One thousand volts.
Kilovolt
Series Circuit
Ground
Charge
33. The time delay between the output signal and the response time of the receiver of the signal.
Lag
Current Proportioning
Latent heat
Watt
34. The range of voltage needed to maintain operation of a control or device.
Vector
Field-Effect Transistor (FET)
Electrodynamic
Supply Voltage
35. Two dissimilar metals connected at a point - that produce an electrical current whose magnitude is dependent upon the temperature at the junction point.
Circuit
Fluorescent
Thermocouple
Rheostat
36. A full path of electrical current from a voltage source that passes completely from one terminal of the voltage source to another.
XMTR
Circuit
Threshold Response
BTU
37. The unit for capacitance. A capacitor that stored one coulomb of charge with one volt across it will have a value of one farad.
Conductance
Proximity Switch
Kilowatt
Farad
38. EPA; ~LINK~
Capacitor
Voltage Drop
Kilowatt
Environmental Protection Agency
39. A three mode control consisting of time Proportioning - Integral and Derivative rate action.
Zener Diode
Volt
PID
XMTR
40. 'Common Mode Voltage.' The voltage which is tolerable between signal and ground.
CMV
Hazardous Location
Current
Bridge Rectifier
41. 'American Wire Gauge' system used to determine wire size.
I
AWG
Y
Open Circuit
42. SI; The standard metric system of units.
Field-Effect Transistor (FET)
Quasiparticle
Charge
System International
43. 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.
Transient
Alternating Current
Grounding Conductor
Cycle
44. The method by which two devices or systems are connected and interact with each other.
Phase
Ingress Protection Ratings
Chatter
Interface
45. The opposition to electrical flow.
Phase Proportioning
Impedance
Watt
Operating Temperature
46. NEMA;
Manual Reset Switch
Quantum
National Fire Protection Association
National Electrical Manufacturers Association
47. Current Consumption. The amount of amps or milliamps needed to maintain operation of a control or device.
Supply Current
National Fire Protection Association
Quartz
Celsius
48. ISO;
Electrode
International Organization for Standardization
Zener Diode
Thyristor
49. IEEE;
Mean Temperature
Open Circuit
CMV
Institute of Electrical and Electronics Engineers
50. A reference point at zero potential with respect to the earth. In an electronic circuit it is the common return path for electric current. A conducting connection between the earth and an electrical circuit or electrical equipment. Also - the negativ
Ingress Protection Ratings
Ground
Capacitor
Kilowatt Hour