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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 coil of wire wound about a magnetic material - such as iron - that produces a magnetic field when current flows through the wire.
Underwriters Laboratories
Voltmeter
Phase Proportioning
Electromagnet
2. The range of temperature over which a device may be safely used. The temperature range which the device has been designed to operate.
Magnetic Flux
Operating Temperature
Electrodynamic
Cathode
3. Or Hertz; The measurement of the time period of one alternating electric current. In the United States this is commonly 60 cycles per second - or 60 Hertz.
Ingress Protection Ratings
Cycle
Ripple
Latching logic
4. A small current leaking from an output device in the off state caused by semiconductor characteristics.
Watt-hour
XFMR
Frequency
Leakage current
5. A negative (-) electrode. The point of entry of electrons into a device from an external circuit. The negative electrode of a semiconductor diode.
Cathode
Hazardous Location
Filter
Power Dissipation
6. UL; ~LINK~
Watt
RFI
Underwriters Laboratories
Load
7. The energy delivered by a circuit or device. The electrical signal produced by the input to the transducer.
PSID
Zero Adjustment
Output
Polarity
8. A variable resistor.
Rheostat
Canadian Standards Administration
Chatter
Impedance
9. One thousandth of an inch.
Maximum Load Current
Cycle Time
Light Emitting Diode
Mil
10. 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
Mueller Bridge
Ohmeter
Electric circuit
11. Response to the change in the level of the input signal.
Ingress Protection Ratings
Zero Adjustment
Thermistor
Threshold Response
12. EPA; ~LINK~
Environmental Protection Agency
Milliamp
CMV
PSID
13. 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
Anode
X ray
Kilowatt Hour
14. The rate of transfer of energy.
Flux
RFI
Absolute Zero
Pulse
15. The resistance to electrical current. Resistance is measured in ohms.
Dilectric
Infrared
Conduit
Resistance
16. A device used to store electrical energy in an electrostatic field until discharge.
Quap
Quasiparticle
Factory Mutual
Capacitor
17. The rapid on/off cycling of a relay caused by improper signal or adjustment - faulty contacts - or other malfunction.
Chatter
UHF
Milliamp
XFMR
18. 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
Modulated Light Source Control
Lag
Absolute Zero
19. The delayed period of time when outputs are turned off when power is initially applied.
Time Delay Before Availability
Actuator
Electromagnet
Charge
20. Electric and magnetic force field that surrounds a moving electric charge.
Factory Mutual
On/Off Controller
Canadian Standards Administration
Electromagnetic field
21. Pressure that is less than atmospheric pressure.
American National Standards Institute
Vacuum
Milliamp
SCR
22. The mechanism of a switch which operates the contacts.
Transient
Actuator
Electromagnet
Ingress Protection Ratings
23. A process that is kept at a constant temperature.
Quantum
XFMR
Isothermal
Alternating Current
24. A device having two terminals and has a low resistance to electrical current in one direction and a high resistance in the other direction.
Grounding Conductor
Kilovolt
Diode
On/Off Controller
25. The difference in potential measured between two points caused by resistance or impedance.
Voltage Drop
Transducer
Process Meter
Electrode
26. NFPA;
National Fire Protection Association
Weber
Response Time
Mil
27. Applying molecular physics to electronics.
Mean Temperature
Microvolt
I
Quantum Electronics
28. Resistance Temperature Detector.
Magnetic Field
Cycle
RTD
Electromagnetic field
29. The current that is gained by a transistor when it is connected in a common emitter circuit.
Electrode
Beta
Zener Diode
Ampere
30. MA; One thousandth of an amp.
Y
Manual Reset Switch
Milliamp
Microamp
31. A switch in a controller that manually resets after exceeding the controllers limit.
Circuit
International Brotherhood of Electrical Workers
Manual Reset Switch
Grounded
32. Symbol used to denote transformer.
Electromagnetic field
XFMR
Intrinsically safe
Conduit
33. 'Common Mode Voltage.' The voltage which is tolerable between signal and ground.
CMV
Rectifier
Celsius
Grounded Conductor
34. ISO;
Field-Effect Transistor (FET)
Field cell
International Organization for Standardization
International Brotherhood of Electrical Workers
35. The average temperature of a process.
Institute of Electrical and Electronics Engineers
Kilowatt
Mean Temperature
Grounded
36. The opposition to electrical flow.
Hard Wired
Modulated Light Source Control
Impedance
Thermocouple
37. Symbol for Mega - one million.
M
Threshold Response
Interface
Rheostat
38. (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'
Amp
Quap
Zero Adjustment
PSIA
39. A unit of electrical current named after French physicist Andr
Vacuum
Bridge Rectifier
Ampere
Voltage Drop
40. OSHA;
Capacitor
Efficiency
Occupational Safety & Health Administration
VF
41. Symbol used for wye configuration for three phase electrical connections.
Coulomb
Open Circuit
Y
Electroduct
42. Intensity. The commonly used symbol used to represent Amperes when used in formulas. I = Intensity = Current = Amps = Amperes.
I
VOM
Cycle Time
Output
43. An electrical circuit that is not 'made'. Contacts - switches or similar devices are open and preventing the floe of current.
PSIA
Latching logic
Rectifier
Open Circuit
44. A sudden and unwanted increase or decrease of supply voltage or current.
Transient
Leakage current
X ray
Quantum
45. Radio Frequency Interference.
RFI
N.O.
Interface
Circuit
46. The maximum watts that a device can safely handle.
Mean Temperature
Latent heat
Maximum Power Rating
Instrument Society of America
47. The adjustment of a display that results are zero on the display corresponding to a non-zero signal.
Flux
Joule
Transistor
Zero Adjustment
48. One millionth of an amp.
Maximum Load Current
Microamp
Quark
Transducer
49. A device incorporating semiconductor material and suitable contacts capable of performing electrical functions (such as voltage - current or power amplification) with low power requirements.
Fluorescent
Break
Transistor
Working Standard
50. Two dissimilar metals connected at a point - that produce an electrical current whose magnitude is dependent upon the temperature at the junction point.
Thermocouple
Mil
Amp
X ray