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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. A temperature scale. Also known as centigrade. Sea level water will freeze at 0
Maximum Operating Temperature
Celsius
Proximity Sensor
Isothermal
2. The energy delivered by a circuit or device. The electrical signal produced by the input to the transducer.
Absolute Zero
American National Standards Institute
Output
Occupational Safety & Health Administration
3. A sensor or switch with the ability to detect it's relationship to a metal target without making physical contact.
Dilectric
Proximity Sensor
Transistor
Quantum Electronics
4. A positive (+) electrode. The point where electrons exit from a device to the external electric circuit.
VHF
Grounded
Anode
Interface
5. A negative (-) electrode. The point of entry of electrons into a device from an external circuit. The negative electrode of a semiconductor diode.
VOM
Thermocouple
Momentary switch
Cathode
6. An electrical resistor composed of semiconductor material - whose resistance is a known rapidly varying function of temperature.
International Organization for Standardization
Maximum Operating Temperature
Electrolysis
Thermistor
7. Pounds per square inch differential. The difference in pressure between two points.
Latent heat
Mil
PSID
Pulse
8. Symbol used to denote transformer.
National Electrical Code
Output
PID
XFMR
9. The element inside a vacuum tube - incandescent lamp or other similar device.
Velocity
N.C.
Filament
Supply Voltage
10. 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.
Series Circuit
National Electrical Code
Modulated Light Source Control
Open Circuit
11. The output that is produced when one or more inputs are present.
OR Logic
Kilowatt Hour
Zener Diode
VHF
12. Also known as Hertz - it is the number of complete cycles of periodic waveform that occur during a time period of one second.
Quartziodine Lamp
Frequency
Velocity
Intrinsically safe
13. An anode (+) or cathode (-) conductor on a device through which an electric current passes.
Conductance
Manual Reset Switch
Environmental Protection Agency
Electrode
14. 'Common Mode Voltage.' The voltage which is tolerable between signal and ground.
Electrochemistry
Kilovolt
CMV
Environmental Protection Agency
15. The range of voltage needed to maintain operation of a control or device.
Farad
Supply Voltage
Canadian Standards Administration
Break
16. The measure of the ability of a material or substance to carry electrical current.
Mil
Electrolysis
Conductance
Infrared
17. The range of temperature over which a device may be safely used. The temperature range which the device has been designed to operate.
International Brotherhood of Electrical Workers
Transient
Operating Temperature
Weber
18. Electric current passing through an electrolyte which produces chemical changes in it.
Lag
Electrolysis
Bridge Rectifier
Fluorescent
19. Mm; One thousandth of a meter.
Modulated Light Source Control
National Fire Protection Association
Millimeter
Manual Reset Switch
20. The amount of time it takes for a device to react to an input signal.
Maximum Load Current
Pulse
Response Time
Coulomb
21. A form of silicone dioxide. Commonly used in the making of radio transmitters and heat resistant products.
N.O.
Electrolysis
Zero Adjustment
Quartz
22. A full path of electrical current from a voltage source that passes completely from one terminal of the voltage source to another.
Transducer
Ohm
Circuit
Mueller Bridge
23. Symbol used to denote transmitter.
XMTR
Underwriters Laboratories
Kilowatt
Electromagnetic field
24. 'American Wire Gauge' system used to determine wire size.
N.O.
Ground
AWG
Current
25. European environmental ratings. Similar to NEMA ratings in the USA. IP;*site has NEMA comparisons ~LINK~
Ingress Protection Ratings
Microvolt
Transient
Proximity Sensor
26. NFPA;
Dilectric
M
National Fire Protection Association
Zener Effect
27. '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
Electrolysis
Leakage current
Factory Mutual
28. A rise and fall of voltage - current - or other faction that would be constant under normal conditions. A pulse that is intentionally induced will have a finite duration time.
Pulse
Threshold Response
Rheostat
Current
29. An area in which combustible or flammable mixtures are or could be present.
PSID
Hazardous Location
Transient
Y
30. IEEE;
Relay
Triac
Institute of Electrical and Electronics Engineers
PSIG
31. 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.
Quark
Interface
Series Circuit
Electricity
32. The unit of power. One watt equals one joule per second - 1/746th horsepower.
Conduit
Ripple
Watt
Millivolt
33. A variable resistor.
VOM
Rheostat
Transient
Electromagnet
34. ISO;
Working Standard
Electric circuit
Quality Control
International Organization for Standardization
35. 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.
Ampere
Latent heat
Infrared
Triac
36. A tube - pipe or trough that carries and protects electric wiring.
Conduit
Field-Effect Transistor (FET)
Triac
Supply Voltage
37. The rate of transfer of energy.
Flux
I
Capacitor
Millimeter
38. 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.'
Supply Current
Forward Voltage
Time Delay Before Availability
Q-value
39. The time it takes for a controller to complete one on/off cycle.
Cycle Time
Velocity
Maximum Operating Temperature
Thermistor
40. The power of one watt operating for one hour - and equal to 3 -600 joules.
Watt-hour
Maximum Operating Temperature
Modulated Light Source Control
Canadian Standards Administration
41. The moving of electricity or heat through a conductor.
Electromagnetic field
Y
Conduction
Proximity Switch
42. Silicone Controlled Rectifier.
Hard Wired
SCR
Ampere
National Electrical Manufacturers Association
43. The mechanism of a switch which operates the contacts.
VHF
Ampere
Actuator
Grounded Conductor
44. 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.
Conductor
Cathode
Cycle
Delta
45. Variable Frequency.
VF
Grounded
Isothermal
National Electrical Manufacturers Association
46. An interconnected arrangement of parts for carrying high-voltage electricity.
Thermoelectricity
Electrolysis
Electroduct
Y
47. A switch with contacts that are made with actuating force and released when that force is removed.
Electric circuit
Phase
Proximity Switch
Momentary switch
48. The opposition to electrical flow.
Electrodynamic
Impedance
Celsius
Thermistor
49. kV; One thousand volts.
RTD
Operating Temperature
Momentary switch
Kilovolt
50. A coil of wire wound about a magnetic material - such as iron - that produces a magnetic field when current flows through the wire.
Charge
Electromagnet
Kilovolt amperes
Mean Temperature