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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 device that converts AC voltage to pulsating DC voltage.
Phase
Rectifier
National Fire Protection Association
Frequency
2. IEEE;
VF
Transistor
Bridge Rectifier
Institute of Electrical and Electronics Engineers
3. 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
Voltage Drop
Q-value
Amplifier
4. 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.
Load
Magnetic Field
Kilovolt
Delta
5. (ampere)The basic unit of current in an electrical circuit. One ampere is the rate of flow of electric current when one coulomb of charge flows past a point in the circuit in one second. Symbolically characterized by the letter 'I' and sometimes 'A'
Ingress Protection Ratings
I
Frequency
Amp
6. 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.
Electromagnetic field
Quartziodine Lamp
Series Circuit
National Electrical Code
7. A tube - pipe or trough that carries and protects electric wiring.
N.C.
Vacuum
Conduit
Electrolysis
8. -459.67
Watt-hour
Break
Absolute Zero
PSID
9. The mechanism of a switch which operates the contacts.
Transient
Actuator
Underwriters Laboratories
Rectifier
10. UL; ~LINK~
Latent heat
Micron
Zero Adjustment
Underwriters Laboratories
11. The rapid on/off cycling of a relay caused by improper signal or adjustment - faulty contacts - or other malfunction.
Fluorescent
Thermocouple
Electroduct
Chatter
12. European environmental ratings. Similar to NEMA ratings in the USA. IP;*site has NEMA comparisons ~LINK~
Ingress Protection Ratings
Thermistor
National Electrical Code
UHF
13. A coil of wire wound about a magnetic material - such as iron - that produces a magnetic field when current flows through the wire.
UHF
Zener Effect
Electromagnet
Gain
14. A positive (+) electrode. The point where electrons exit from a device to the external electric circuit.
BTU
Interface
Anode
Ohmeter
15. An arrangement of any of various conductors through which electric current can flow from a supply current.
Y
Process Meter
Joule
Electric circuit
16. The standard that is used to make comparison measurements or calibrations.
Quartziodine Lamp
Working Standard
Absolute Zero
International Organization for Standardization
17. 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
Mean Temperature
Intrinsically safe
Instrument Society of America
Thermocouple
18. Symbol used to denote transformer.
XFMR
Cathode
Vector
Circuit
19. The amount of energy released in a nuclear reaction. It is expressed in atomic mass units - or in million electron volts (MEV).
Grounded
Q-value
SCR
Load
20. (AC); Electrical current that changes (or alternates) in magnitude and direction of the current at regular intervals.
PSIA
Zener Diode
Alternating Current
Rheostat
21. 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.
Power Supply
Infrared
RTD
RFI
22. Very High Frequency.
Filter
VHF
Conduit
Direct Current
23. CSA ~LINK~
Canadian Standards Administration
Modulated Light Source Control
Plasma
Magnetic Flux
24. Voltage; The unit of electromotive force (EMF) that causes current to flow. One volt causes a current of one amp through a resistance of one ohm.
Watt-hour
Beta
Volt
Series Circuit
25. See; 'Maximum Power Rating'.
Maximum Load Current
Potentiometer
Impedance
Leakage current
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.
Forward Voltage
Velocity
Conduction
Electricity
27. A unit of energy in solid-state physics with mass and momentum but that does not exist as a free particle.
Absolute Zero
Process Meter
Coulomb
Quasiparticle
28. A full path of electrical current from a voltage source that passes completely from one terminal of the voltage source to another.
Circuit
Zero Adjustment
Joule
Electrodynamic
29. A fluctuation in the intensity of a steady current.
Mueller Bridge
Quap
Ripple
Zener Effect
30. LED; A solid state light source component that emits light or invisible infrared radiation.
Anode
Micron
Light Emitting Diode
Current
31. 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.
Electromagnetic field
SCR
Mil
Grounding Conductor
32. A hypothetical basic subatomic nuclear particle believed to be the basic component of protons - neutrons - etc.
Quark
Underwriters Laboratories
Ohm
Intrinsically safe
33. A negative (-) electrode. The point of entry of electrons into a device from an external circuit. The negative electrode of a semiconductor diode.
Volt
Electrokinetics
Diode
Cathode
34. A form of control where the power supplied to a process is controlled by limiting the phase angle of the line voltage.
Maximum Power Rating
Electron
Dilectric
Phase Proportioning
35. The output that is produced when one or more inputs are present.
Ground
OR Logic
Magnetic Flux
National Electrical Code
36. The unit for capacitance. A capacitor that stored one coulomb of charge with one volt across it will have a value of one farad.
Zero Adjustment
Transducer
Quasiparticle
Farad
37. One thousandth of an inch.
Mil
PID
Root Mean Square
Ingress Protection Ratings
38. Symbol used to denote transmitter.
Q-value
PSID
Quartz
XMTR
39. A switching device used in switching high DC loads. It contains a small permanent magnet which deflects arc in order to quench it.
Volt
Load
Magnetic Blow-out Switch
System International
40. A small current leaking from an output device in the off state caused by semiconductor characteristics.
Transient Protection
Circuit
Leakage current
Watt-hour
41. The element inside a vacuum tube - incandescent lamp or other similar device.
XFMR
Electrokinetics
Filament
American National Standards Institute
42. The act of the opening of an electrical circuit.
Break
N.O.
Electrodynamic
Conduction
43. An interconnected arrangement of parts for carrying high-voltage electricity.
Voltmeter
Thermocouple
Forward Voltage
Electroduct
44. The difference in potential measured between two points caused by resistance or impedance.
Kilovolt amperes
Vector
Voltage Drop
Grounding Conductor
45. The time delay between the output signal and the response time of the receiver of the signal.
M
VOM
Modulated Light Source Control
Lag
46. An electrically conductive fused salt or a solution where the charge is carried by ionic movement.
National Electrical Code
Transient
Electrolyte
Charge
47. ANSI;
American National Standards Institute
Cathode
National Electrical Code
Current Proportioning
48. A panel meter with zero and span adjustments - commonly scaled for signals such as 1-5 volts - 4-20mA - etc.
Process Meter
Mil
Maximum Power Rating
XMTR
49. That part of a circuit which is physically interconnected.
Hard Wired
PSIA
Infrared
Thermistor
50. The amount of heat needed to convert one pound of water to one pound of steam. Latent heat is expressed in BTU per pound.
Filament
Maximum Load Current
Thyristor
Latent heat
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