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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. Pressure that is less than atmospheric pressure.
AWG
Plasma
Modulated Light Source Control
Vacuum
2. A form of control where the power supplied to a process is controlled by limiting the phase angle of the line voltage.
Interface
Make
Quantum Electronics
Phase Proportioning
3. An electrical circuit that increases the power - voltage or current of an applied signal.
Kilovolt
Ground
Latent heat
Amplifier
4. The resistance to electrical current. Resistance is measured in ohms.
Ohmeter
CMV
Resistance
System International
5. Volt-ohm Meter.
Direct Current
Infrared
American National Standards Institute
VOM
6. Current Consumption. The amount of amps or milliamps needed to maintain operation of a control or device.
Electricity
Supply Current
Alternating Current
Circuit
7. The rate at which electricity flows - measured in amperes - 1 ampere = 1 coulomb per second.
Open Circuit
Current
National Electrical Code
Pulse
8. 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.
Cycle
Power Supply
Infrared
Actuator
9. A full path of electrical current from a voltage source that passes completely from one terminal of the voltage source to another.
Circuit
Operating Temperature
Electrolyte
Thermoelectricity
10. The maximum temperature at which a device can be safely operated.
Voltage Drop
Interface
Maximum Operating Temperature
Response Time
11. See; 'Maximum Power Rating'.
Quality Control
Quark
Mil
Maximum Load Current
12. A controller whose action is either fully on or off.
Cycle
Response Time
Mean Temperature
On/Off Controller
13. The behavior of charged particles and the steady motion of charge in magnetic and electric fields.
Electrokinetics
Beta
Velocity
Maximum Load Current
14. The range of voltage needed to maintain operation of a control or device.
Threshold Response
Supply Voltage
Transistor
Phase
15. One millionth of a meter.
Micron
X ray
Electricity
Electrokinetics
16. The maximum watts that a device can safely handle.
Diode
Maximum Power Rating
Absolute Zero
Watt-hour
17. A coil of wire wound about a magnetic material - such as iron - that produces a magnetic field when current flows through the wire.
Electromagnet
Lag
Pulse
Farad
18. A tube - pipe or trough that carries and protects electric wiring.
Quark
Conduit
Electromagnetic field
Conductor
19. A positive (+) electrode. The point where electrons exit from a device to the external electric circuit.
On/Off Controller
Frequency
Mueller Bridge
Anode
20. 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.
Voltage Drop
Power Dissipation
Infrared
Open Circuit
21. The magnitude and time phase of a quantity - represented by a plotted line.
Institute of Electrical and Electronics Engineers
Transient
Vector
X ray
22. The quality of having the ability to emit light when struck by electrons or another form of radiation.
Instrument Society of America
Potentiometer
Electron
Fluorescent
23. A circuit conductor that is grounded to become part of the electric circuit by design and intent.
Grounded Conductor
Impedance
Electrolysis
Efficiency
24. '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.
Manual Reset Switch
Direct Current
National Electrical Code
BTU
25. A highly accurate bridge configuration that is used to measure three-wire RTD thermometers.
Power Supply
Conductance
Electrodynamic
Mueller Bridge
26. OSHA;
Quantum
UHF
Relay
Occupational Safety & Health Administration
27. A three mode control consisting of time Proportioning - Integral and Derivative rate action.
PID
Filter
M
Coulomb
28. An interconnected arrangement of parts for carrying high-voltage electricity.
Electron
Electroduct
Alternating Current
Electrode
29. Normally Open.
Filament
N.O.
M
Farad
30. Protective circuitry to guard against spikes that might be induced on the supply line.
Quality Control
Modulated Light Source Control
Quap
Transient Protection
31. The range of temperature over which a device may be safely used. The temperature range which the device has been designed to operate.
Operating Temperature
Plasma
Threshold Response
Electrodynamic
32. The element inside a vacuum tube - incandescent lamp or other similar device.
Filament
Instrument Society of America
Amp
Magnetic Flux
33. A high-intensity incandescent lamp with a quartz bulb containing an inert gas of iodine or bromine vapor.
Charge
Q-value
Quartziodine Lamp
Watt-hour
34. Applying molecular physics to electronics.
Dilectric
Quantum Electronics
VF
Time Delay Before Availability
35. A switch with contacts that are made with actuating force and released when that force is removed.
Alternating Current
Momentary switch
Threshold Response
Microamp
36. A negative (-) electrode. The point of entry of electrons into a device from an external circuit. The negative electrode of a semiconductor diode.
Joule
Triac
Cathode
Institute of Electrical and Electronics Engineers
37. The standard unit of magnetic flux.
Light Emitting Diode
Watt-hour
Occupational Safety & Health Administration
Weber
38. A meter used to measure electrical resistance in units of ohms.
Kilovolt
Ohmeter
Latent heat
Open Circuit
39. 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.
Coulomb
Flux
Magnetic Flux
UHF
40. 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
Ampere
Quartziodine Lamp
Supply Voltage
41. A small current leaking from an output device in the off state caused by semiconductor characteristics.
Microvolt
Dilectric
Zero Adjustment
Leakage current
42. A solid-state switching device for semiconductors to convert AC current in one of two directions controlled by an electrode.
Velocity
Thyristor
Thermistor
Frequency
43. IEC;
International Electrotechnical Commission
Fluorescent
Magnetic Field
Maximum Load Current
44. Silicone Controlled Rectifier.
SCR
Amplifier
Plasma
Ohmeter
45. Electric and magnetic force field that surrounds a moving electric charge.
Kilowatt Hour
Electromagnetic field
Intrinsically safe
I
46. An arrangement of any of various conductors through which electric current can flow from a supply current.
Electric circuit
XMTR
Latching logic
PSIA
47. IEEE;
Institute of Electrical and Electronics Engineers
Magnetic Field
Electron
Response Time
48. See; 'Proximity Sensor'.
Make
Proximity Switch
Circuit
Voltmeter
49. A variable resistor.
Quantum
Power Dissipation
Watt-hour
Rheostat
50. A fluctuation in the intensity of a steady current.
Impedance
BTU
Ripple
National Electrical Manufacturers Association