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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. IBEW;
International Brotherhood of Electrical Workers
Millimeter
Proximity Switch
Maximum Power Rating
2. To close an electrical circuit. To establish an electrical circuit through the closing of a contact - switch or other related device.
Current
Latching logic
Quantum Electronics
Make
3. When there is current through a semiconductor p-n junction it is the resistance of a forward-biased junction.
National Fire Protection Association
Millimeter
Forward resistance
Latent heat
4. 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
Intrinsically safe
Quantum
Maximum Load Current
Grounding Conductor
5. The time based relationship between a reference and a periodic function.
Supply Current
Microvolt
Phase
Plasma
6. ANSI;
Vector
Leakage current
American National Standards Institute
Microvolt
7. The amount of power that is consumed and converted to heat.
Quartz
Power Dissipation
Electroduct
Joule
8. A silicone semiconductor that maintains a fixed voltage in a circuit.
Zener Diode
Hazardous Location
Proximity Sensor
Proximity Switch
9. 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.
Relay
Field-Effect Transistor (FET)
Electrolyte
Proximity Switch
10. Pounds per square inch absolute. Pressure commonly in reference to vacuum.
Thermocouple
OR Logic
Electrode
PSIA
11. A coil of wire wound about a magnetic material - such as iron - that produces a magnetic field when current flows through the wire.
Plasma
VF
Electromagnet
International Organization for Standardization
12. Applying molecular physics to electronics.
Quantum Electronics
Diode
Beta
Triac
13. Two dissimilar metals connected at a point - that produce an electrical current whose magnitude is dependent upon the temperature at the junction point.
Make
Thermocouple
Forward Voltage
Quality Control
14. Magnetically - opposite poles - north and south. In electricity - oppositely charged poles - positive and negative.
Zener Effect
Polarity
Dilectric
Microamp
15. The unit by which electrical resistance is measured. One ohm is equal to the current of one ampere which will flow when a voltage of one volt is applied
Ohm
Thermocouple
Conductance
Proximity Switch
16. The rapid on/off cycling of a relay caused by improper signal or adjustment - faulty contacts - or other malfunction.
Chatter
Diode
PSIA
Charge
17. Pressure that is less than atmospheric pressure.
X ray
Transient
Vacuum
Filament
18. A panel meter with zero and span adjustments - commonly scaled for signals such as 1-5 volts - 4-20mA - etc.
Process Meter
Chatter
I
VOM
19. In a three phase connection all three phases are connected in series thus forming a closed circuit.
Quap
Voltage Drop
Delta
Electrodynamic
20. MA; One thousandth of an amp.
Milliamp
Actuator
Ampere
Field-Effect Transistor (FET)
21. A high-intensity incandescent lamp with a quartz bulb containing an inert gas of iodine or bromine vapor.
Vector
Light Emitting Diode
BTU
Quartziodine Lamp
22. A switching device used in switching high DC loads. It contains a small permanent magnet which deflects arc in order to quench it.
I
Ampere
Electron
Magnetic Blow-out Switch
23. A full path of electrical current from a voltage source that passes completely from one terminal of the voltage source to another.
Light Emitting Diode
Factory Mutual
Circuit
Threshold Response
24. A device that transfers power or energy from one system to another - such as taking a physical quality and changing it to an electrical signal.
Transducer
Instrument Society of America
Mil
AWG
25. A connected path to earth or to a conductive body that has a reference potential to earth.
Electricity
Ingress Protection Ratings
Grounded
Anode
26. NFPA;
Lag
National Fire Protection Association
Quark
Magnetic Field
27. A unit of electric charge. The amount of charge conveyed in one second by one ampere.
International Electrotechnical Commission
Flux
Coulomb
Magnetic Field
28. See; 'Proximity Sensor'.
VOM
Occupational Safety & Health Administration
Proximity Switch
Factory Mutual
29. The unit for capacitance. A capacitor that stored one coulomb of charge with one volt across it will have a value of one farad.
Supply Voltage
Celsius
PID
Farad
30. European environmental ratings. Similar to NEMA ratings in the USA. IP;*site has NEMA comparisons ~LINK~
Ingress Protection Ratings
RFI
BTU
Bridge Rectifier
31. An arrangement of any of various conductors through which electric current can flow from a supply current.
Ampere
Efficiency
Transient
Electric circuit
32. The range of voltage needed to maintain operation of a control or device.
SCR
Power Dissipation
Supply Voltage
Canadian Standards Administration
33. Protective circuitry to guard against spikes that might be induced on the supply line.
Interface
Instrument Society of America
Transient Protection
Electroduct
34. 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.
Intrinsically safe
Supply Current
Infrared
Q-value
35. One of the very small discrete packets into which many forms of energy are subdivided.
N.O.
Quantum
Microamp
National Electrical Code
36. Radio Frequency Interference.
Forward resistance
Environmental Protection Agency
RFI
Efficiency
37. A process that is kept at a constant temperature.
Mean Temperature
Isothermal
Joule
Gain
38. UL; ~LINK~
Magnetic Field
Underwriters Laboratories
Isothermal
Current
39. Kva; One thousand volt amps.
Manual Reset Switch
Field cell
Kilovolt amperes
CMV
40. A solid-state switching device used in switching AC wave forms.
Anode
Watt-hour
Thermoelectricity
Triac
41. NEMA;
National Fire Protection Association
National Electrical Manufacturers Association
Lag
Response Time
42. 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
National Fire Protection Association
Conduction
Ground
Charge
43. 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.
Root Mean Square
Zero Adjustment
Kilowatt
Transducer
44. A controller whose action is either fully on or off.
Impedance
BTU
On/Off Controller
Filter
45. Intensity. The commonly used symbol used to represent Amperes when used in formulas. I = Intensity = Current = Amps = Amperes.
Institute of Electrical and Electronics Engineers
Grounding Conductor
PID
I
46. Very High Frequency.
Electrolyte
Field-Effect Transistor (FET)
Canadian Standards Administration
VHF
47. The amount of energy released in a nuclear reaction. It is expressed in atomic mass units - or in million electron volts (MEV).
Impedance
Maximum Power Rating
CMV
Q-value
48. One millionth of an amp.
Microamp
Proximity Sensor
Voltage Drop
Milliamp
49. 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.
Maximum Power Rating
Modulated Light Source Control
RTD
Grounding Conductor
50. 'American Wire Gauge' system used to determine wire size.
Voltage Drop
Micron
Proximity Switch
AWG