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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 device having two terminals and has a low resistance to electrical current in one direction and a high resistance in the other direction.
UHF
Diode
M
On/Off Controller
2. LED; A solid state light source component that emits light or invisible infrared radiation.
Forward Voltage
Light Emitting Diode
Thermocouple
Conductance
3. The conductor that is used by intent to connect the grounded circuit of an electrical wiring system or equipment to a grounding electrode with reference to earth.
Transistor
Vacuum
Grounding Conductor
Voltage Drop
4. When there is current through a semiconductor p-n junction it is the resistance of a forward-biased junction.
Direct Current
RTD
Forward resistance
Underwriters Laboratories
5. Electric current passing through an electrolyte which produces chemical changes in it.
Electrolysis
Supply Current
Delta
Current
6. A form of energy produced by the flow of particles of matter and consists of commonly attractive positively (protons [+]) and negatively (electrons [-]) charged atomic particles. A stream of electrons - or an electric current.
Kilowatt Hour
Electricity
Flux
Ripple
7. The amount of time it takes for a device to react to an input signal.
International Organization for Standardization
Response Time
Zero Adjustment
Actuator
8. A hypothetical basic subatomic nuclear particle believed to be the basic component of protons - neutrons - etc.
Forward resistance
Relay
Quark
Break
9. The rate of transfer of energy.
Voltage Drop
Magnetic Field
Ground
Flux
10. Pressure that is less than atmospheric pressure.
Quasiparticle
Open Circuit
Vacuum
Light Emitting Diode
11. MA; One thousandth of an amp.
Milliamp
Kilowatt Hour
Actuator
Relay
12. The power of one watt operating for one hour - and equal to 3 -600 joules.
Field cell
Watt-hour
Zener Effect
Mean Temperature
13. Symbol used for wye configuration for three phase electrical connections.
Conductor
Y
Quap
Electrodynamic
14. The quality of having the ability to emit light when struck by electrons or another form of radiation.
Conduit
Process Meter
Fluorescent
Impedance
15. A positive (+) electrode. The point where electrons exit from a device to the external electric circuit.
Circuit
Anode
PSIG
Current
16. A temperature scale. Also known as centigrade. Sea level water will freeze at 0
Celsius
Conduit
XMTR
Quark
17. See; 'Maximum Power Rating'.
Instrument Society of America
Anode
Voltmeter
Maximum Load Current
18. A solid-state switching device for semiconductors to convert AC current in one of two directions controlled by an electrode.
Factory Mutual
Thyristor
Frequency
Y
19. 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(-).
Charge
Electrolysis
Kilovolt amperes
Break
20. A unit of electrical current named after French physicist Andr
Electron
Micron
Ampere
Time Delay Before Availability
21. 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
PSIG
Amplifier
National Fire Protection Association
22. The electrical demand of a process. Load can be expressed or calculated as amps (current) - ohms (resistance) or watts (power).
Break
Kilowatt
Load
Grounded Conductor
23. 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.
Volt
Grounded
Maximum Power Rating
Electroduct
24. A variable resistor.
Thyristor
National Fire Protection Association
Electromagnet
Potentiometer
25. The speed or time rate of change of displacement.
Working Standard
Fluorescent
Proximity Sensor
Velocity
26. An electrical circuit that is not 'made'. Contacts - switches or similar devices are open and preventing the floe of current.
Latching logic
Open Circuit
Cycle
Instrument Society of America
27. The behavior of charged particles and the steady motion of charge in magnetic and electric fields.
Conduction
Electrochemistry
Underwriters Laboratories
Electrokinetics
28. A switching device used in switching high DC loads. It contains a small permanent magnet which deflects arc in order to quench it.
Millivolt
Instrument Society of America
Farad
Magnetic Blow-out Switch
29. A solid-state switching device used in switching AC wave forms.
Zero Adjustment
Diode
Charge
Triac
30. Non-conducting material used to isolate and/or insulate energized electrical components.
Forward resistance
Zener Diode
PSIG
Dilectric
31. The maximum watts that a device can safely handle.
Chatter
Instrument Society of America
Quantum Electronics
Maximum Power Rating
32. Electrical energy produced by the action of heat.
Vacuum
Thermoelectricity
Hard Wired
Conductance
33. Pounds per square inch absolute. Pressure commonly in reference to vacuum.
Hazardous Location
PSIA
Absolute Zero
Quantum Electronics
34. Kwh; One thousand watt-hours.
Electromagnet
Kilowatt Hour
X ray
Ripple
35. The unit for capacitance. A capacitor that stored one coulomb of charge with one volt across it will have a value of one farad.
Farad
Actuator
Grounding Conductor
Kilowatt Hour
36. Normally Open.
Transient
N.O.
Hazardous Location
Flux
37. The opposition to electrical flow.
Impedance
PSID
Electricity
Supply Current
38. A panel meter with zero and span adjustments - commonly scaled for signals such as 1-5 volts - 4-20mA - etc.
Mueller Bridge
Proximity Switch
Relay
Process Meter
39. 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.
Ohmeter
Maximum Power Rating
Alternating Current
Infrared
40. ANSI;
American National Standards Institute
Momentary switch
Pulse
Electromagnetic field
41. The moving of electricity or heat through a conductor.
Milliamp
Gain
Conduction
Fluorescent
42. A fundamental negatively (-) charged atomic particle that rotates around a positively (+) charged nucleus of the atom.
Electron
Electrode
Frequency
Factory Mutual
43. The rapid on/off cycling of a relay caused by improper signal or adjustment - faulty contacts - or other malfunction.
Chatter
Efficiency
Conduit
Watt
44. 'Common Mode Voltage.' The voltage which is tolerable between signal and ground.
Electrolyte
Alternating Current
CMV
Voltmeter
45. 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
Response Time
Fluorescent
Voltmeter
46. Intensity. The commonly used symbol used to represent Amperes when used in formulas. I = Intensity = Current = Amps = Amperes.
I
Mean Temperature
Millimeter
American National Standards Institute
47. One of the very small discrete packets into which many forms of energy are subdivided.
Electrolysis
Thermocouple
Voltage Drop
Quantum
48. The range of voltage needed to maintain operation of a control or device.
AWG
Micron
Supply Voltage
Electrodynamic
49. SI; The standard metric system of units.
Proximity Switch
Bridge Rectifier
Amp
System International
50. The increase of the power level - current or voltage of a signal. In an amplifier it is the ratio of the output to the input signal levels.
Quartziodine Lamp
Micron
Gain
Electromagnetic field