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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. The modification of a signal that causes the output to remain energized until it is released by intent.
Latching logic
Canadian Standards Administration
Electroduct
I
2. One millionth of a meter.
Instrument Society of America
Current
Micron
Output
3. 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.
Maximum Load Current
Milliamp
Root Mean Square
RFI
4. A full path of electrical current from a voltage source that passes completely from one terminal of the voltage source to another.
Time Delay Before Availability
Circuit
Mil
Supply Current
5. A coil of wire wound about a magnetic material - such as iron - that produces a magnetic field when current flows through the wire.
Transient Protection
Magnetic Flux
Electromagnet
Beta
6. Ultra High Frequency
Thyristor
UHF
Electricity
Power Dissipation
7. 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
Direct Current
Latent heat
National Electrical Code
Field cell
8. IBEW;
Manual Reset Switch
Proximity Switch
International Brotherhood of Electrical Workers
On/Off Controller
9. CSA ~LINK~
Canadian Standards Administration
Load
Relay
Underwriters Laboratories
10. Symbol used to denote transformer.
XFMR
Power Dissipation
I
Quantum Electronics
11. The measure of the ability of a material or substance to carry electrical current.
Conductance
Latching logic
Transducer
Conductor
12. The standard unit of magnetic flux.
RTD
Millimeter
Quality Control
Weber
13. The moving of electricity or heat through a conductor.
On/Off Controller
Conduction
Hard Wired
Transistor
14. When there is current through a semiconductor p-n junction it is the resistance of a forward-biased junction.
Forward resistance
M
Zero Adjustment
Proximity Sensor
15. An electrical resistor composed of semiconductor material - whose resistance is a known rapidly varying function of temperature.
Ingress Protection Ratings
Transistor
Fluorescent
Thermistor
16. 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.
National Electrical Code
Millivolt
Infrared
System International
17. 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.
Celsius
Momentary switch
Leakage current
Bridge Rectifier
18. Two dissimilar metals connected at a point - that produce an electrical current whose magnitude is dependent upon the temperature at the junction point.
Field-Effect Transistor (FET)
Thermocouple
VHF
Mean Temperature
19. Very High Frequency.
Microvolt
Actuator
VHF
Plasma
20. A meter used to measure units of volts.
Voltmeter
Efficiency
Open Circuit
Absolute Zero
21. A circuit which may have one or many resistors and/or other various devices connected in a series so that the current has only one path to follow.
RTD
Series Circuit
Modulated Light Source Control
Filament
22. One millionth of a volt.
Kilowatt
Fluorescent
Microvolt
Transient Protection
23. Volt-ohm Meter.
Filter
Rheostat
VOM
Maximum Load Current
24. The resistance to electrical current. Resistance is measured in ohms.
Voltage Drop
Resistance
PSIG
Electrodynamic
25. The delayed period of time when outputs are turned off when power is initially applied.
Amplifier
Time Delay Before Availability
Electromagnet
Kilowatt
26. 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.
Celsius
Electricity
International Organization for Standardization
Current
27. A panel meter with zero and span adjustments - commonly scaled for signals such as 1-5 volts - 4-20mA - etc.
Process Meter
Grounded Conductor
Electromagnetic field
Momentary switch
28. The rate of transfer of energy.
International Organization for Standardization
Electron
Magnetic Blow-out Switch
Flux
29. Output power divided by input power - (work performed in ratio to energy used to produce it).
PSID
American National Standards Institute
Efficiency
Quark
30. NFPA;
Millimeter
National Fire Protection Association
Canadian Standards Administration
Capacitor
31. ISA;
CMV
Instrument Society of America
Alternating Current
Ohm
32. Response to the change in the level of the input signal.
Proximity Switch
Threshold Response
Fluorescent
Conduction
33. A sensor or switch with the ability to detect it's relationship to a metal target without making physical contact.
Proximity Sensor
Kilowatt Hour
Rectifier
Working Standard
34. Pounds per square inch differential. The difference in pressure between two points.
Electricity
Thermocouple
PSID
Y
35. Magnetically - opposite poles - north and south. In electricity - oppositely charged poles - positive and negative.
Grounded Conductor
Polarity
Cycle Time
Load
36. A material used to conduct electricity or heat.
Conductor
International Brotherhood of Electrical Workers
Voltmeter
Grounded Conductor
37. 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
Fluorescent
Working Standard
Electrochemistry
Ground
38. 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.
Absolute Zero
Ohm
Power Supply
Electrolyte
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
Transistor
Intrinsically safe
Supply Current
AWG
40. A unit of energy in solid-state physics with mass and momentum but that does not exist as a free particle.
Kilowatt
Latent heat
Quasiparticle
Delta
41. A switch with contacts that are made with actuating force and released when that force is removed.
International Electrotechnical Commission
Electrolyte
Momentary switch
Proximity Sensor
42. The time it takes for a controller to complete one on/off cycle.
Voltmeter
XFMR
Cycle Time
SCR
43. A circuit element or components that allows signals of certain frequencies to pass and blocks signals of other frequencies.
Volt
Filter
Phase
Cycle
44. The amount of energy released in a nuclear reaction. It is expressed in atomic mass units - or in million electron volts (MEV).
Cathode
Electron
Modulated Light Source Control
Q-value
45. A variable resistor.
Rheostat
Delta
Quantum
Frequency
46. The mechanism of a switch which operates the contacts.
Actuator
National Electrical Manufacturers Association
Watt-hour
Quasiparticle
47. The rapid on/off cycling of a relay caused by improper signal or adjustment - faulty contacts - or other malfunction.
Joule
Grounded Conductor
Chatter
Magnetic Flux
48. -459.67
Absolute Zero
Vacuum
Instrument Society of America
Quasiparticle
49. Mm; One thousandth of a meter.
X ray
Conductor
Actuator
Millimeter
50. A sudden and unwanted increase or decrease of supply voltage or current.
Output
XFMR
Magnetic Flux
Transient