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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 positive (+) electrode. The point where electrons exit from a device to the external electric circuit.
Coulomb
International Electrotechnical Commission
International Brotherhood of Electrical Workers
Anode
2. A panel meter with zero and span adjustments - commonly scaled for signals such as 1-5 volts - 4-20mA - etc.
Process Meter
Light Emitting Diode
Transistor
Power Supply
3. A solid-state switching device used in switching AC wave forms.
Triac
N.O.
Capacitor
Make
4. A form of control where the power supplied to a process is controlled by limiting the phase angle of the line voltage.
Millimeter
Phase Proportioning
Mean Temperature
Mueller Bridge
5. See; 'Proximity Sensor'.
Proximity Switch
VOM
Vacuum
Latching logic
6. EPA; ~LINK~
Y
UHF
Millimeter
Environmental Protection Agency
7. Silicone Controlled Rectifier.
XMTR
Supply Voltage
SCR
Power Dissipation
8. A hypothetical basic subatomic nuclear particle believed to be the basic component of protons - neutrons - etc.
Mil
Quark
Conductor
Electromagnetic field
9. IBEW;
System International
Micron
RTD
International Brotherhood of Electrical Workers
10. A switch in a controller that manually resets after exceeding the controllers limit.
Amp
Manual Reset Switch
National Electrical Code
Electricity
11. A form of silicone dioxide. Commonly used in the making of radio transmitters and heat resistant products.
National Electrical Code
Current Proportioning
N.O.
Quartz
12. kV; One thousand volts.
Quartz
Microvolt
Kilovolt
Electromagnet
13. Kva; One thousand volt amps.
Break
Kilovolt amperes
Filament
Infrared
14. The amount of time it takes for a device to react to an input signal.
Response Time
Amp
VF
Actuator
15. The time delay between the output signal and the response time of the receiver of the signal.
Plasma
Lag
Intrinsically safe
PSIA
16. Chemical changes and energy produced by electric currents.
Current
Electrochemistry
Ampere
Field-Effect Transistor (FET)
17. 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.
Current Proportioning
X ray
Open Circuit
Quark
18. IEC;
Quartziodine Lamp
Infrared
Rectifier
International Electrotechnical Commission
19. A meter used to measure electrical resistance in units of ohms.
X ray
Ohmeter
Transient Protection
Amplifier
20. 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.
VOM
N.O.
Break
Magnetic Flux
21. The standard unit of magnetic flux.
Microvolt
Weber
Volt
XFMR
22. SI; The standard metric system of units.
System International
Momentary switch
Ohm
Latching logic
23. The maximum temperature at which a device can be safely operated.
Maximum Operating Temperature
Actuator
Power Supply
Zener Diode
24. The range of temperature over which a device may be safely used. The temperature range which the device has been designed to operate.
Circuit
Lag
Operating Temperature
National Fire Protection Association
25. Normally Open.
N.O.
Electron
Quantum
Electrochemistry
26. In a three phase connection all three phases are connected in series thus forming a closed circuit.
Delta
Magnetic Blow-out Switch
PSID
Electrolyte
27. A three mode control consisting of time Proportioning - Integral and Derivative rate action.
PID
Ingress Protection Ratings
Root Mean Square
Zero Adjustment
28. Response to the change in the level of the input signal.
Root Mean Square
Infrared
Threshold Response
Charge
29. The time it takes for a controller to complete one on/off cycle.
Field cell
Celsius
Supply Current
Cycle Time
30. NFPA;
Anode
National Fire Protection Association
Transistor
Micron
31. Magnetically - opposite poles - north and south. In electricity - oppositely charged poles - positive and negative.
Polarity
Direct Current
PID
Quality Control
32. MA; One thousandth of an amp.
Filament
Modulated Light Source Control
Milliamp
PID
33. When there is current through a semiconductor p-n junction it is the resistance of a forward-biased junction.
Forward resistance
UHF
Chatter
Modulated Light Source Control
34. Output power divided by input power - (work performed in ratio to energy used to produce it).
Efficiency
Underwriters Laboratories
PSID
Ingress Protection Ratings
35. Kw; One thousand watts.
Kilowatt
Light Emitting Diode
Quasiparticle
Magnetic Field
36. A device that converts AC voltage to pulsating DC voltage.
Break
BTU
PSID
Rectifier
37. Very High Frequency.
Quap
Joule
OR Logic
VHF
38. The act of the opening of an electrical circuit.
Voltmeter
Microvolt
Break
Field-Effect Transistor (FET)
39. The rate at which electricity flows - measured in amperes - 1 ampere = 1 coulomb per second.
Capacitor
Flux
N.C.
Current
40. A coil of wire wound about a magnetic material - such as iron - that produces a magnetic field when current flows through the wire.
Quap
Electromagnet
Field-Effect Transistor (FET)
Magnetic Blow-out Switch
41. A high-intensity incandescent lamp with a quartz bulb containing an inert gas of iodine or bromine vapor.
Polarity
Thyristor
Quartziodine Lamp
Latent heat
42. One thousandth of an inch.
Leakage current
American National Standards Institute
Pulse
Mil
43. The quality of having the ability to emit light when struck by electrons or another form of radiation.
Quantum Electronics
Fluorescent
Celsius
PSIG
44. A solid-state switching device for semiconductors to convert AC current in one of two directions controlled by an electrode.
M
Electroduct
Light Emitting Diode
Thyristor
45. The modification of a signal that causes the output to remain energized until it is released by intent.
Latching logic
Open Circuit
XMTR
Microamp
46. 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.
Forward resistance
Volt
Quantum Electronics
Canadian Standards Administration
47. Mm; One thousandth of a meter.
PID
Millimeter
Cycle Time
Y
48. NEC: A set of regulations pertaining to electrical installation and design in the interest of the protection of life and property. The NEC is adopted by NFPA and approved by ANSI. It is the preferred standard of guidelines used by most electrical reg
Rheostat
National Electrical Code
Electrolysis
Transient
49. UL; ~LINK~
Q-value
Underwriters Laboratories
Latching logic
Pulse
50. The average temperature of a process.
Mean Temperature
Series Circuit
Plasma
Electromagnetic field