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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. An ionized gas containing about equal numbers of positive and negative charges - which is a good conductor of electricity - and is affected by a magnetic field.
Quartz
Electromagnet
PSIG
Plasma
2. An electrical circuit that increases the power - voltage or current of an applied signal.
Millivolt
PSIA
Amplifier
Grounded Conductor
3. The measured amount of electrical energy that represents the electrostatic forces between atomic particles. The nucleus of an atom has a positive charge (+) and the electrons have a negative charge(-).
Quark
Time Delay Before Availability
CMV
Charge
4. Two dissimilar metals connected at a point - that produce an electrical current whose magnitude is dependent upon the temperature at the junction point.
Kilowatt Hour
Absolute Zero
Amp
Thermocouple
5. MV; One thousandth of a volt. The difference in potential needed to cause a current of one milliampere flow through a resistance of one ohm.
Electron
Grounding Conductor
Dilectric
Millivolt
6. A high-intensity incandescent lamp with a quartz bulb containing an inert gas of iodine or bromine vapor.
Gain
Open Circuit
Quartziodine Lamp
International Electrotechnical Commission
7. Chemical changes and energy produced by electric currents.
Infrared
VHF
Circuit
Electrochemistry
8. Magnetically - opposite poles - north and south. In electricity - oppositely charged poles - positive and negative.
Polarity
Series Circuit
Microamp
Microvolt
9. When there is current through a semiconductor p-n junction it is the resistance of a forward-biased junction.
Forward resistance
Anode
PSIA
International Electrotechnical Commission
10. The time based relationship between a reference and a periodic function.
Phase
Potentiometer
Resistance
Polarity
11. The unit of power. One watt equals one joule per second - 1/746th horsepower.
Zener Diode
Watt
XMTR
Conductance
12. An electrical circuit that is not 'made'. Contacts - switches or similar devices are open and preventing the floe of current.
Open Circuit
Electric circuit
Q-value
Ampere
13. (AC); Electrical current that changes (or alternates) in magnitude and direction of the current at regular intervals.
XMTR
Conduction
Quartz
Alternating Current
14. -459.67
Electron
Root Mean Square
Absolute Zero
Hazardous Location
15. The range of temperature over which a device may be safely used. The temperature range which the device has been designed to operate.
Forward Voltage
Operating Temperature
Factory Mutual
N.C.
16. A controller whose action is either fully on or off.
Interface
Grounded Conductor
On/Off Controller
Quality Control
17. A fundamental negatively (-) charged atomic particle that rotates around a positively (+) charged nucleus of the atom.
Q-value
Thermistor
Thyristor
Electron
18. The act of the opening of an electrical circuit.
Conductor
Lag
Series Circuit
Break
19. The rate at which electricity flows - measured in amperes - 1 ampere = 1 coulomb per second.
Voltage Drop
Grounded
Millimeter
Current
20. 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.
Power Dissipation
Volt
Current Proportioning
Q-value
21. One millionth of a meter.
Millimeter
Electrodynamic
Micron
XFMR
22. 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.
RFI
Relay
Root Mean Square
Working Standard
23. 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
National Electrical Code
Beta
Electrode
Kilowatt Hour
24. A unit of electric charge. The amount of charge conveyed in one second by one ampere.
X ray
Joule
Transducer
Coulomb
25. A unit of energy in solid-state physics with mass and momentum but that does not exist as a free particle.
International Electrotechnical Commission
Supply Voltage
Quasiparticle
Quark
26. The method by which two devices or systems are connected and interact with each other.
Quark
Interface
Kilovolt
Electrolyte
27. The output that is produced when one or more inputs are present.
SCR
OR Logic
Electron
Resistance
28. A panel meter with zero and span adjustments - commonly scaled for signals such as 1-5 volts - 4-20mA - etc.
VHF
Process Meter
Quasiparticle
Conduction
29. The quality of having the ability to emit light when struck by electrons or another form of radiation.
Maximum Load Current
Infrared
Magnetic Flux
Fluorescent
30. A small current leaking from an output device in the off state caused by semiconductor characteristics.
Actuator
Kilovolt
Leakage current
Microvolt
31. An anode (+) or cathode (-) conductor on a device through which an electric current passes.
Quap
UHF
Electrode
Alternating Current
32. The delayed period of time when outputs are turned off when power is initially applied.
Mean Temperature
Proximity Sensor
Time Delay Before Availability
Zener Effect
33. A hypothetical nuclear of a quark plus an antiproton.
Joule
Quap
Kilowatt
Conduction
34. Symbol used to denote transformer.
Vacuum
Dilectric
Rheostat
XFMR
35. The standard unit of magnetic flux.
Canadian Standards Administration
Weber
Quasiparticle
Millivolt
36. Radio Frequency Interference.
Actuator
RFI
Zener Effect
Infrared
37. ISA;
Weber
Instrument Society of America
Power Supply
Ingress Protection Ratings
38. A device used to store electrical energy in an electrostatic field until discharge.
N.O.
Time Delay Before Availability
Capacitor
Proximity Sensor
39. A coil of wire wound about a magnetic material - such as iron - that produces a magnetic field when current flows through the wire.
Process Meter
Electromagnet
Intrinsically safe
Quantum
40. The amount of time it takes for a device to react to an input signal.
Watt
Transistor
Supply Voltage
Response Time
41. A variable resistor.
Potentiometer
PID
Current
Quartz
42. An electrical resistor composed of semiconductor material - whose resistance is a known rapidly varying function of temperature.
Thermistor
Ripple
National Fire Protection Association
Anode
43. Kw; One thousand watts.
Phase Proportioning
N.C.
RTD
Kilowatt
44. Kva; One thousand volt amps.
SCR
Kilovolt amperes
Watt
Joule
45. The average temperature of a process.
Quality Control
Mean Temperature
Conduction
Quartz
46. An arrangement of any of various conductors through which electric current can flow from a supply current.
Electric circuit
Forward resistance
Joule
Alternating Current
47. A fluctuation in the intensity of a steady current.
Quartziodine Lamp
Ripple
Chatter
Electroduct
48. The mechanism of a switch which operates the contacts.
Kilowatt
Environmental Protection Agency
Actuator
Farad
49. 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.
Light Emitting Diode
Microvolt
Magnetic Field
Institute of Electrical and Electronics Engineers
50. 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.
Velocity
Amplifier
Rectifier
Cycle