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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. 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.
SCR
Electrochemistry
VOM
Magnetic Flux
2. -459.67
International Organization for Standardization
Absolute Zero
National Fire Protection Association
Operating Temperature
3. The time based relationship between a reference and a periodic function.
Electroduct
Phase
Maximum Power Rating
Watt-hour
4. 'American Wire Gauge' system used to determine wire size.
Electrodynamic
RFI
Leakage current
AWG
5. Symbol for Mega - one million.
M
Farad
Quartziodine Lamp
CMV
6. A unit of electrical current named after French physicist Andr
Ampere
International Brotherhood of Electrical Workers
Maximum Power Rating
Efficiency
7. (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'
Velocity
Chatter
Response Time
Amp
8. MA; One thousandth of an amp.
Coulomb
M
UHF
Milliamp
9. Magnetically - opposite poles - north and south. In electricity - oppositely charged poles - positive and negative.
Polarity
M
Series Circuit
Grounded Conductor
10. The amount of time it takes for a device to react to an input signal.
Response Time
Actuator
Threshold Response
Electromagnetic field
11. 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.
Capacitor
On/Off Controller
Electromagnetic field
Transducer
12. An electrical circuit that increases the power - voltage or current of an applied signal.
Anode
National Fire Protection Association
Amplifier
On/Off Controller
13. A device incorporating semiconductor material and suitable contacts capable of performing electrical functions (such as voltage - current or power amplification) with low power requirements.
Open Circuit
I
Electromagnet
Transistor
14. A device used to store electrical energy in an electrostatic field until discharge.
Capacitor
Phase
Charge
Frequency
15. Symbol used for wye configuration for three phase electrical connections.
Y
M
XFMR
Working Standard
16. See; 'Maximum Power Rating'.
Zero Adjustment
Maximum Load Current
Polarity
Rectifier
17. OSHA;
Absolute Zero
Occupational Safety & Health Administration
Gain
Amplifier
18. European environmental ratings. Similar to NEMA ratings in the USA. IP;*site has NEMA comparisons ~LINK~
Transducer
Absolute Zero
Proximity Sensor
Ingress Protection Ratings
19. A sensor or switch with the ability to detect it's relationship to a metal target without making physical contact.
Proximity Sensor
Flux
Rectifier
M
20. NEMA;
Microvolt
National Electrical Manufacturers Association
Magnetic Flux
Latching logic
21. Very High Frequency.
VHF
Grounded
Underwriters Laboratories
Occupational Safety & Health Administration
22. An electromagnetic radiation produced when the inner satellite electrons of heavy atoms have been excited by collision with a stream of fast electrons return to their ground state - giving up the energy previously imparted to them.
Potentiometer
Quasiparticle
Occupational Safety & Health Administration
X ray
23. Symbol used to denote transformer.
Kilovolt
N.O.
XFMR
Watt-hour
24. 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
National Electrical Code
Bridge Rectifier
Ohm
International Brotherhood of Electrical Workers
25. Variable Frequency.
VF
Conduction
Ampere
N.C.
26. A silicone semiconductor that maintains a fixed voltage in a circuit.
Zener Diode
VOM
Kilovolt amperes
Grounded
27. The average temperature of a process.
National Fire Protection Association
Mean Temperature
Infrared
Time Delay Before Availability
28. A sudden and unwanted increase or decrease of supply voltage or current.
Transient
Maximum Load Current
Cathode
On/Off Controller
29. A small current leaking from an output device in the off state caused by semiconductor characteristics.
Electrolysis
Field-Effect Transistor (FET)
Vacuum
Leakage current
30. The magnitude and time phase of a quantity - represented by a plotted line.
Vector
Break
Voltage Drop
Light Emitting Diode
31. The electrical demand of a process. Load can be expressed or calculated as amps (current) - ohms (resistance) or watts (power).
Quasiparticle
Latching logic
Phase Proportioning
Load
32. The unit for capacitance. A capacitor that stored one coulomb of charge with one volt across it will have a value of one farad.
Current
Intrinsically safe
Interface
Farad
33. 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.
Modulated Light Source Control
Electrokinetics
Lag
Grounded Conductor
34. See; 'Proximity Sensor'.
Proximity Switch
Delta
CMV
Watt-hour
35. 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.
Quasiparticle
Ampere
Volt
Hard Wired
36. One of the very small discrete packets into which many forms of energy are subdivided.
Underwriters Laboratories
Zener Diode
Quasiparticle
Quantum
37. Pounds per square inch gage. Pressure in relationship to the ambient air pressure>
PSIG
Weber
Chatter
Electrokinetics
38. An arrangement of any of various conductors through which electric current can flow from a supply current.
Electric circuit
National Electrical Code
Triac
Break
39. SI; The standard metric system of units.
Rectifier
System International
Break
Resistance
40. The rate at which electricity flows - measured in amperes - 1 ampere = 1 coulomb per second.
System International
Occupational Safety & Health Administration
Current
Open Circuit
41. An electrically conductive fused salt or a solution where the charge is carried by ionic movement.
Rheostat
Phase Proportioning
Latching logic
Electrolyte
42. Electric current passing through an electrolyte which produces chemical changes in it.
Electrolysis
Leakage current
Magnetic Flux
Maximum Power Rating
43. IBEW;
International Brotherhood of Electrical Workers
N.C.
Electrochemistry
Series Circuit
44. An anode (+) or cathode (-) conductor on a device through which an electric current passes.
Electrode
PSID
Maximum Power Rating
Grounded
45. A positive (+) electrode. The point where electrons exit from a device to the external electric circuit.
Flux
Bridge Rectifier
Zero Adjustment
Anode
46. The time delay between the output signal and the response time of the receiver of the signal.
Watt
Lag
Series Circuit
Operating Temperature
47. An interconnected arrangement of parts for carrying high-voltage electricity.
Mean Temperature
Quality Control
Absolute Zero
Electroduct
48. The element inside a vacuum tube - incandescent lamp or other similar device.
Filament
Y
Voltmeter
Ingress Protection Ratings
49. A form of silicone dioxide. Commonly used in the making of radio transmitters and heat resistant products.
Working Standard
Impedance
Gain
Quartz
50. A tube - pipe or trough that carries and protects electric wiring.
Conduit
Threshold Response
Make
Rectifier