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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 tube - pipe or trough that carries and protects electric wiring.
RTD
Conduit
Field cell
Load
2. The unit of power. One watt equals one joule per second - 1/746th horsepower.
Forward Voltage
Electrodynamic
Watt
Power Dissipation
3. The current that is gained by a transistor when it is connected in a common emitter circuit.
Joule
Direct Current
Anode
Beta
4. 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.
Diode
Electrodynamic
Root Mean Square
BTU
5. A Solid State relay is a switching device that completes or interrupts a circuit electrically and has no moving parts. A Mechanical relay is an electromechanical device that closes contacts to complete a circuit or opens contacts to interrupt a circu
Relay
Cathode
PSIG
On/Off Controller
6. Two dissimilar metals connected at a point - that produce an electrical current whose magnitude is dependent upon the temperature at the junction point.
Threshold Response
Volt
Thermocouple
Ohmeter
7. A three mode control consisting of time Proportioning - Integral and Derivative rate action.
Plasma
Voltmeter
XFMR
PID
8. Symbol used to denote transformer.
Infrared
XFMR
Proximity Switch
Vector
9. The maximum temperature at which a device can be safely operated.
Power Dissipation
Maximum Operating Temperature
Make
Y
10. A device that converts AC voltage to pulsating DC voltage.
Direct Current
Factory Mutual
Modulated Light Source Control
Rectifier
11. NEMA;
Proximity Switch
Delta
Volt
National Electrical Manufacturers Association
12. The amount of heat needed to convert one pound of water to one pound of steam. Latent heat is expressed in BTU per pound.
Fluorescent
Phase Proportioning
Latent heat
Transducer
13. See; 'Proximity Sensor'.
Quap
Proximity Switch
Power Supply
American National Standards Institute
14. Also known as Hertz - it is the number of complete cycles of periodic waveform that occur during a time period of one second.
Frequency
N.O.
Electron
Supply Voltage
15. A solid-state switching device for semiconductors to convert AC current in one of two directions controlled by an electrode.
Thyristor
Quap
International Brotherhood of Electrical Workers
Filter
16. FM; ~LINK~
Forward Voltage
Open Circuit
Factory Mutual
Absolute Zero
17. (DC); Electrical current that flows consistently in one direction only.
Direct Current
Relay
Cycle
Lag
18. The rate of transfer of energy.
Open Circuit
Field cell
Response Time
Flux
19. A meter used to measure electrical resistance in units of ohms.
Electrochemistry
Quark
Ohmeter
Canadian Standards Administration
20. The act of the opening of an electrical circuit.
International Organization for Standardization
Thyristor
Break
Velocity
21. IBEW;
Zero Adjustment
Latent heat
Quap
International Brotherhood of Electrical Workers
22. Kw; One thousand watts.
Kilowatt
Factory Mutual
Quantum
Impedance
23. An electrical resistor composed of semiconductor material - whose resistance is a known rapidly varying function of temperature.
Thermistor
Ampere
Direct Current
Electroduct
24. Commonly used in generators and motors - it is an electromagnet formed from a coil of insulated wire that is wound around a soft iron core.
Field cell
Modulated Light Source Control
Grounded Conductor
Plasma
25. 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.
International Organization for Standardization
Ingress Protection Ratings
Current Proportioning
Time Delay Before Availability
26. LED; A solid state light source component that emits light or invisible infrared radiation.
Vector
Light Emitting Diode
Quark
Ohm
27. Response to the change in the level of the input signal.
Electric circuit
Threshold Response
Polarity
Kilovolt
28. 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
Break
National Electrical Code
VF
Q-value
29. A fundamental negatively (-) charged atomic particle that rotates around a positively (+) charged nucleus of the atom.
Electron
Underwriters Laboratories
Isothermal
Zener Effect
30. An electrical circuit that is not 'made'. Contacts - switches or similar devices are open and preventing the floe of current.
Zener Effect
Open Circuit
Infrared
Mueller Bridge
31. A circuit conductor that is grounded to become part of the electric circuit by design and intent.
Grounded Conductor
Hazardous Location
Quantum
XFMR
32. A high-intensity incandescent lamp with a quartz bulb containing an inert gas of iodine or bromine vapor.
Ripple
Supply Voltage
Quartziodine Lamp
Working Standard
33. The element inside a vacuum tube - incandescent lamp or other similar device.
Filament
Kilovolt
Transducer
Power Dissipation
34. The behavior of charged particles and the steady motion of charge in magnetic and electric fields.
Transistor
Proximity Switch
Coulomb
Electrokinetics
35. SI; The standard metric system of units.
System International
PSIA
Current
Field cell
36. OSHA;
Quantum
Magnetic Field
Quap
Occupational Safety & Health Administration
37. The modification of a signal that causes the output to remain energized until it is released by intent.
Latching logic
Celsius
Occupational Safety & Health Administration
Relay
38. In a three phase connection all three phases are connected in series thus forming a closed circuit.
Forward resistance
Occupational Safety & Health Administration
Delta
Threshold Response
39. The moving of electricity or heat through a conductor.
Grounded Conductor
Rectifier
Conduction
PID
40. One thousandth of an inch.
Mil
CMV
Series Circuit
Electrokinetics
41. (AC); Electrical current that changes (or alternates) in magnitude and direction of the current at regular intervals.
Alternating Current
Ingress Protection Ratings
Mueller Bridge
Ripple
42. Ultra High Frequency
Factory Mutual
UHF
Pulse
International Electrotechnical Commission
43. The time based relationship between a reference and a periodic function.
Kilovolt amperes
Charge
National Electrical Code
Phase
44. One of the very small discrete packets into which many forms of energy are subdivided.
Thyristor
Quantum
Time Delay Before Availability
Transducer
45. A full path of electrical current from a voltage source that passes completely from one terminal of the voltage source to another.
Make
Circuit
Plasma
Absolute Zero
46. A highly accurate bridge configuration that is used to measure three-wire RTD thermometers.
Mueller Bridge
PSID
Plasma
National Fire Protection Association
47. MA; One thousandth of an amp.
Milliamp
International Organization for Standardization
I
X ray
48. kV; One thousand volts.
Kilovolt
Operating Temperature
Microamp
Intrinsically safe
49. ANSI;
Microvolt
American National Standards Institute
Operating Temperature
Plasma
50. 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.
On/Off Controller
System International
Thermistor
Magnetic Flux