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Test your basic knowledge |
Electrical Components
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Study First
Subject
:
engineering
Instructions:
Answer 50 questions in 15 minutes.
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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 opposition to electrical flow.
Gain
AWG
Impedance
Weber
2. The modification of a signal that causes the output to remain energized until it is released by intent.
Current Proportioning
Infrared
Conductance
Latching logic
3. The moving of electricity or heat through a conductor.
Conduction
Amplifier
Filter
Absolute Zero
4. IEC;
Quasiparticle
Kilowatt Hour
National Electrical Code
International Electrotechnical Commission
5. Expressed in webers - it is the product of the average normal component of the magnetic intensity over a surface and the area of that surface.
Magnetic Flux
Millimeter
I
Hazardous Location
6. The current that is gained by a transistor when it is connected in a common emitter circuit.
Beta
Canadian Standards Administration
Quality Control
Ohmeter
7. 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.
Magnetic Field
Y
Latching logic
Kilowatt
8. A device incorporating semiconductor material and suitable contacts capable of performing electrical functions (such as voltage - current or power amplification) with low power requirements.
Occupational Safety & Health Administration
Quap
Transistor
CMV
9. A sudden and unwanted increase or decrease of supply voltage or current.
Phase
Transient
Grounding Conductor
Dilectric
10. The electrical demand of a process. Load can be expressed or calculated as amps (current) - ohms (resistance) or watts (power).
Electricity
UHF
Load
Time Delay Before Availability
11. '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.
RFI
Coulomb
BTU
Grounded
12. A process that is kept at a constant temperature.
Isothermal
Ohmeter
Q-value
Electrochemistry
13. 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.
Zener Diode
Millivolt
UHF
Forward resistance
14. European environmental ratings. Similar to NEMA ratings in the USA. IP;*site has NEMA comparisons ~LINK~
Ingress Protection Ratings
AWG
Micron
Open Circuit
15. 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.
Grounding Conductor
Leakage current
Conduction
Magnetic Flux
16. To close an electrical circuit. To establish an electrical circuit through the closing of a contact - switch or other related device.
Proximity Switch
Intrinsically safe
Make
Capacitor
17. A unit of electric charge. The amount of charge conveyed in one second by one ampere.
Micron
XMTR
Coulomb
PID
18. The mechanism of a switch which operates the contacts.
Relay
Circuit
Actuator
Power Supply
19. A negative (-) electrode. The point of entry of electrons into a device from an external circuit. The negative electrode of a semiconductor diode.
RTD
Cathode
Time Delay Before Availability
Operating Temperature
20. A connected path to earth or to a conductive body that has a reference potential to earth.
Magnetic Blow-out Switch
Hard Wired
PSID
Grounded
21. 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.'
Ohm
Frequency
Fluorescent
Forward Voltage
22. A variable resistor.
Series Circuit
Potentiometer
Electrolyte
Latching logic
23. The measure of the ability of a material or substance to carry electrical current.
Magnetic Flux
BTU
Thyristor
Conductance
24. A unit of electrical current named after French physicist Andr
Electrolysis
VHF
Response Time
Ampere
25. Symbol used to denote transmitter.
Gain
Quasiparticle
Impedance
XMTR
26. 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.
Celsius
Current Proportioning
Series Circuit
Interface
27. The standard unit of magnetic flux.
Kilowatt
Weber
Millivolt
Forward resistance
28. The time delay between the output signal and the response time of the receiver of the signal.
Lag
VF
Electrodynamic
Ground
29. In a temperature controller it is the output form that provides a current proportional to the amount of control that is required. Commonly it is the 4 to 20 milliamp current proportioning band that is used in the electronics industry.
American National Standards Institute
PSIA
System International
Current Proportioning
30. ISO;
Ohm
Electromagnet
Weber
International Organization for Standardization
31. MLS; A photoelectric control that operates on pulsed infrared radiation at a specific frequency - and responds only to that frequency of pulse. MLS is used frequently in areas where ambient light may cause problems with other types of sensors.
Power Dissipation
Relay
Maximum Operating Temperature
Modulated Light Source Control
32. OSHA;
Magnetic Flux
Occupational Safety & Health Administration
Quartziodine Lamp
Light Emitting Diode
33. An electrically conductive fused salt or a solution where the charge is carried by ionic movement.
Electrolyte
Dilectric
Lag
M
34. The behavior of charged particles and the steady motion of charge in magnetic and electric fields.
Electrokinetics
Forward resistance
Charge
Maximum Load Current
35. The rapid on/off cycling of a relay caused by improper signal or adjustment - faulty contacts - or other malfunction.
Chatter
Circuit
Kilovolt
Ohm
36. The difference in potential measured between two points caused by resistance or impedance.
Load
Triac
Voltage Drop
PSIA
37. Symbol for Mega - one million.
M
Microamp
Proximity Switch
Chatter
38. The maximum temperature at which a device can be safely operated.
Rectifier
Maximum Operating Temperature
Magnetic Flux
Cycle Time
39. A switch in a controller that manually resets after exceeding the controllers limit.
Coulomb
Microamp
Forward Voltage
Manual Reset Switch
40. ANSI;
Factory Mutual
American National Standards Institute
Electroduct
Voltage Drop
41. A highly accurate bridge configuration that is used to measure three-wire RTD thermometers.
Polarity
Mueller Bridge
Maximum Load Current
RTD
42. Two dissimilar metals connected at a point - that produce an electrical current whose magnitude is dependent upon the temperature at the junction point.
SCR
Y
Electrokinetics
Thermocouple
43. An anode (+) or cathode (-) conductor on a device through which an electric current passes.
Amp
Electrode
Quark
OR Logic
44. 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.
M
Coulomb
Infrared
Grounding Conductor
45. 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
Ground
Electrolyte
Field-Effect Transistor (FET)
RFI
46. Symbol used for wye configuration for three phase electrical connections.
Zener Effect
Interface
Y
Conduction
47. (DC); Electrical current that flows consistently in one direction only.
Direct Current
Ampere
Electrochemistry
Triac
48. A silicone semiconductor that maintains a fixed voltage in a circuit.
PSIG
Electrokinetics
Zener Diode
Quality Control
49. Pounds per square inch gage. Pressure in relationship to the ambient air pressure>
Thermistor
Field-Effect Transistor (FET)
PSIG
Amp
50. Normally Open.
Thyristor
Thermistor
Ingress Protection Ratings
N.O.
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