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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. UL; ~LINK~
RFI
Triac
Potentiometer
Underwriters Laboratories
2. A form of silicone dioxide. Commonly used in the making of radio transmitters and heat resistant products.
Quartz
Isothermal
Forward resistance
System International
3. ISO;
X ray
International Organization for Standardization
Ground
Cycle Time
4. A solid-state switching device for semiconductors to convert AC current in one of two directions controlled by an electrode.
Electromagnetic field
Quasiparticle
Thyristor
National Fire Protection Association
5. Volt-ohm Meter.
VOM
Hard Wired
RTD
Vacuum
6. Variable Frequency.
N.O.
Cycle Time
VF
Absolute Zero
7. Resistance Temperature Detector.
AWG
Electromagnet
RTD
Actuator
8. A coil of wire wound about a magnetic material - such as iron - that produces a magnetic field when current flows through the wire.
Amplifier
XFMR
Filter
Electromagnet
9. Pressure that is less than atmospheric pressure.
Efficiency
Quartz
System International
Vacuum
10. A controller whose action is either fully on or off.
On/Off Controller
National Electrical Code
AWG
Make
11. The current that is gained by a transistor when it is connected in a common emitter circuit.
VF
Intrinsically safe
Beta
Zener Effect
12. Output power divided by input power - (work performed in ratio to energy used to produce it).
Efficiency
Filament
National Electrical Code
Rheostat
13. The amount of heat needed to convert one pound of water to one pound of steam. Latent heat is expressed in BTU per pound.
Mueller Bridge
Latent heat
I
Transistor
14. The voltage that is applied across a semiconductor junction to permit forward current through that junction and the device. Forward voltage is also known as 'bias.'
Time Delay Before Availability
Forward Voltage
Impedance
Q-value
15. The standard that is used to make comparison measurements or calibrations.
Phase Proportioning
Working Standard
Thermistor
Transistor
16. The adjustment of a display that results are zero on the display corresponding to a non-zero signal.
Impedance
Zero Adjustment
Joule
Direct Current
17. Mm; One thousandth of a meter.
Grounding Conductor
Millimeter
Zener Effect
Underwriters Laboratories
18. The amount of time it takes for a device to react to an input signal.
Response Time
Break
VOM
Electromagnet
19. Current Consumption. The amount of amps or milliamps needed to maintain operation of a control or device.
Proximity Sensor
Isothermal
Volt
Supply Current
20. The rate at which electricity flows - measured in amperes - 1 ampere = 1 coulomb per second.
Hazardous Location
Quality Control
Current
Flux
21. ISA;
Micron
Light Emitting Diode
Instrument Society of America
Maximum Power Rating
22. A panel meter with zero and span adjustments - commonly scaled for signals such as 1-5 volts - 4-20mA - etc.
Dilectric
Capacitor
Process Meter
Latent heat
23. A fundamental negatively (-) charged atomic particle that rotates around a positively (+) charged nucleus of the atom.
Electron
Electrokinetics
Forward resistance
Alternating Current
24. 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.
Quality Control
Supply Current
Power Supply
XMTR
25. Radio Frequency Interference.
RFI
Load
Electrode
Grounded Conductor
26. The delayed period of time when outputs are turned off when power is initially applied.
Time Delay Before Availability
PSIG
Electrolyte
Rheostat
27. A positive (+) electrode. The point where electrons exit from a device to the external electric circuit.
Y
Efficiency
Anode
Diode
28. A meter used to measure units of volts.
Voltmeter
N.C.
Millimeter
Resistance
29. 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
Cycle
National Electrical Code
International Organization for Standardization
VOM
30. A device used to store electrical energy in an electrostatic field until discharge.
Latent heat
Capacitor
Beta
Thyristor
31. The amount of power that is consumed and converted to heat.
Power Dissipation
Joule
Magnetic Blow-out Switch
Transient
32. The magnitude and time phase of a quantity - represented by a plotted line.
Lag
Magnetic Field
Vector
Power Supply
33. A sensor or switch with the ability to detect it's relationship to a metal target without making physical contact.
Velocity
Millivolt
Proximity Sensor
Proximity Switch
34. See; 'Maximum Power Rating'.
International Electrotechnical Commission
Watt
Maximum Load Current
RFI
35. Symbol used to denote transformer.
XFMR
M
Environmental Protection Agency
Frequency
36. The opposition to electrical flow.
Quartziodine Lamp
Grounding Conductor
Celsius
Impedance
37. IEC;
Mueller Bridge
International Electrotechnical Commission
Transient Protection
Operating Temperature
38. Kwh; One thousand watt-hours.
Load
Kilowatt Hour
Polarity
Watt-hour
39. One thousandth of an inch.
Magnetic Field
Mil
Series Circuit
Volt
40. (AC); Electrical current that changes (or alternates) in magnitude and direction of the current at regular intervals.
Output
VF
Alternating Current
Chatter
41. The difference in potential measured between two points caused by resistance or impedance.
Maximum Load Current
Voltage Drop
Conductor
Latent heat
42. A negative (-) electrode. The point of entry of electrons into a device from an external circuit. The negative electrode of a semiconductor diode.
Power Supply
Efficiency
Cathode
Magnetic Field
43. One of the very small discrete packets into which many forms of energy are subdivided.
Transistor
Quantum
Institute of Electrical and Electronics Engineers
Intrinsically safe
44. A device that converts AC voltage to pulsating DC voltage.
Rectifier
Electromagnet
RFI
Frequency
45. The basic of thermal energy. The work done by the force of one newton acting through a distance of one meter.
Capacitor
Joule
Cycle Time
Chatter
46. A hypothetical nuclear of a quark plus an antiproton.
Dilectric
Quap
Infrared
Triac
47. 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.
Canadian Standards Administration
AWG
Millivolt
PSID
48. A meter used to measure electrical resistance in units of ohms.
Quark
Threshold Response
Filament
Ohmeter
49. The pronounced curvature in reverse voltage current that is characteristic of a diode.
Current Proportioning
Beta
Grounded Conductor
Zener Effect
50. Silicone Controlled Rectifier.
SCR
Supply Voltage
Phase Proportioning
Momentary switch