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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 temperature scale. Also known as centigrade. Sea level water will freeze at 0
Ohmeter
Magnetic Field
Electromagnet
Celsius
2. Variable Frequency.
Ohmeter
Load
VF
CMV
3. An electrical circuit that is not 'made'. Contacts - switches or similar devices are open and preventing the floe of current.
Infrared
Open Circuit
Conductance
Alternating Current
4. A hypothetical nuclear of a quark plus an antiproton.
N.O.
Break
Zero Adjustment
Quap
5. A material used to conduct electricity or heat.
Conductor
Millimeter
Supply Voltage
Electrode
6. The pronounced curvature in reverse voltage current that is characteristic of a diode.
Cycle
Zener Effect
PSIA
Quartziodine Lamp
7. A full path of electrical current from a voltage source that passes completely from one terminal of the voltage source to another.
Millivolt
Make
Circuit
Instrument Society of America
8. Non-conducting material used to isolate and/or insulate energized electrical components.
Lag
Dilectric
Delta
CMV
9. Pounds per square inch gage. Pressure in relationship to the ambient air pressure>
PSIG
Momentary switch
On/Off Controller
Manual Reset Switch
10. Symbol used for wye configuration for three phase electrical connections.
Vacuum
Y
Break
Quantum
11. European environmental ratings. Similar to NEMA ratings in the USA. IP;*site has NEMA comparisons ~LINK~
Phase
Ingress Protection Ratings
Make
Amp
12. The output that is produced when one or more inputs are present.
Fluorescent
Light Emitting Diode
OR Logic
Micron
13. Chemical changes and energy produced by electric currents.
Y
Electrochemistry
Cycle
Mil
14. The modification of a signal that causes the output to remain energized until it is released by intent.
Cathode
Field-Effect Transistor (FET)
M
Latching logic
15. NFPA;
Grounded
Field cell
XMTR
National Fire Protection Association
16. Pressure that is less than atmospheric pressure.
Momentary switch
Supply Current
Vacuum
Magnetic Flux
17. One thousandth of an inch.
National Fire Protection Association
Voltage Drop
Mil
Ohm
18. The rate of transfer of energy.
RTD
Delta
Rectifier
Flux
19. A coil of wire wound about a magnetic material - such as iron - that produces a magnetic field when current flows through the wire.
Electromagnet
Bridge Rectifier
Thermocouple
Maximum Power Rating
20. The mechanism of a switch which operates the contacts.
Supply Voltage
Kilowatt Hour
Actuator
Underwriters Laboratories
21. The amount of power that is consumed and converted to heat.
Load
Infrared
Power Dissipation
Grounded Conductor
22. A unit of electrical current named after French physicist Andr
Series Circuit
Thermistor
Ampere
Triac
23. The act of the opening of an electrical circuit.
Canadian Standards Administration
Break
Capacitor
Light Emitting Diode
24. Response to the change in the level of the input signal.
Grounded
Quark
Supply Voltage
Threshold Response
25. Kva; One thousand volt amps.
Kilovolt amperes
Bridge Rectifier
Electricity
Vacuum
26. Very High Frequency.
VHF
CMV
Quasiparticle
Supply Voltage
27. A meter used to measure units of volts.
Voltmeter
Ground
Threshold Response
PID
28. A controller whose action is either fully on or off.
National Electrical Manufacturers Association
On/Off Controller
Current
BTU
29. Protective circuitry to guard against spikes that might be induced on the supply line.
Transient Protection
Resistance
Actuator
Electrokinetics
30. The range of voltage needed to maintain operation of a control or device.
Potentiometer
Maximum Load Current
Supply Voltage
Y
31. Magnetically - opposite poles - north and south. In electricity - oppositely charged poles - positive and negative.
Cycle
Electric circuit
Polarity
Electrokinetics
32. A device incorporating semiconductor material and suitable contacts capable of performing electrical functions (such as voltage - current or power amplification) with low power requirements.
Transistor
Hard Wired
Cathode
Quantum
33. (DC); Electrical current that flows consistently in one direction only.
Grounded Conductor
Electrodynamic
Absolute Zero
Direct Current
34. 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.
XFMR
Magnetic Field
Capacitor
Occupational Safety & Health Administration
35. 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.
Joule
Ingress Protection Ratings
Pulse
Frequency
36. The moving of electricity or heat through a conductor.
Conduction
Capacitor
Zener Diode
Filament
37. 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.
Leakage current
Infrared
Anode
Microvolt
38. The maximum watts that a device can safely handle.
Ripple
Maximum Power Rating
Watt-hour
Diode
39. A variable resistor.
Interface
Rheostat
Factory Mutual
Transient
40. One of the very small discrete packets into which many forms of energy are subdivided.
Thermistor
M
Conduit
Quantum
41. The current that is gained by a transistor when it is connected in a common emitter circuit.
Power Supply
Watt
Joule
Beta
42. A panel meter with zero and span adjustments - commonly scaled for signals such as 1-5 volts - 4-20mA - etc.
Current Proportioning
Phase Proportioning
Filament
Process Meter
43. 'British Thermal Unit' - the amount of thermal energy required to raise one pound of water 1degree F. One BTU is equal to .293 watt hours. One kWh is equal to 3412 BTUs.
BTU
Bridge Rectifier
N.O.
Proximity Switch
44. A circuit conductor that is grounded to become part of the electric circuit by design and intent.
Grounding Conductor
Vector
Grounded Conductor
Make
45. 'Common Mode Voltage.' The voltage which is tolerable between signal and ground.
Fluorescent
Working Standard
CMV
Microamp
46. Mm; One thousandth of a meter.
National Fire Protection Association
Millimeter
VHF
Thermoelectricity
47. Normally Closed.
Electromagnet
N.C.
Supply Current
Voltage Drop
48. The adjustment of a display that results are zero on the display corresponding to a non-zero signal.
Series Circuit
Zero Adjustment
Quark
Beta
49. Symbol for Mega - one million.
Voltage Drop
Current
M
Transistor
50. Pounds per square inch absolute. Pressure commonly in reference to vacuum.
XMTR
Potentiometer
Microvolt
PSIA