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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. (ampere)The basic unit of current in an electrical circuit. One ampere is the rate of flow of electric current when one coulomb of charge flows past a point in the circuit in one second. Symbolically characterized by the letter 'I' and sometimes 'A'
Amp
Impedance
Transient Protection
PSIA
2. A device having two terminals and has a low resistance to electrical current in one direction and a high resistance in the other direction.
Cathode
Diode
Q-value
Electrolyte
3. A fundamental negatively (-) charged atomic particle that rotates around a positively (+) charged nucleus of the atom.
International Brotherhood of Electrical Workers
Electron
Farad
Electric circuit
4. The average temperature of a process.
Mean Temperature
Latent heat
Watt
Joule
5. -459.67
Absolute Zero
Cathode
Mean Temperature
Modulated Light Source Control
6. 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.
Current Proportioning
VHF
Zener Diode
Conductor
7. Variable Frequency.
BTU
VF
Maximum Load Current
National Fire Protection Association
8. CSA ~LINK~
CMV
Canadian Standards Administration
Quality Control
Forward resistance
9. Mm; One thousandth of a meter.
Modulated Light Source Control
Supply Voltage
UHF
Millimeter
10. Ultra High Frequency
Thermoelectricity
UHF
OR Logic
Voltmeter
11. The interaction of magnetism and electrical current.
Electrodynamic
Thermoelectricity
Current Proportioning
Weber
12. Silicone Controlled Rectifier.
Quality Control
SCR
Quark
Thermistor
13. IEEE;
XMTR
Electricity
On/Off Controller
Institute of Electrical and Electronics Engineers
14. A tube - pipe or trough that carries and protects electric wiring.
Lag
Occupational Safety & Health Administration
Conductor
Conduit
15. The magnitude and time phase of a quantity - represented by a plotted line.
Vacuum
Conductor
Flux
Vector
16. Intensity. The commonly used symbol used to represent Amperes when used in formulas. I = Intensity = Current = Amps = Amperes.
Maximum Power Rating
Polarity
I
Supply Current
17. A positive (+) electrode. The point where electrons exit from a device to the external electric circuit.
Anode
Celsius
Charge
Chatter
18. The difference in potential measured between two points caused by resistance or impedance.
Microvolt
Charge
Voltage Drop
Electroduct
19. MLS; A photoelectric control that operates on pulsed infrared radiation at a specific frequency - and responds only to that frequency of pulse. MLS is used frequently in areas where ambient light may cause problems with other types of sensors.
Modulated Light Source Control
Voltage Drop
Impedance
Process Meter
20. (AC); Electrical current that changes (or alternates) in magnitude and direction of the current at regular intervals.
Watt
Alternating Current
Grounded
Canadian Standards Administration
21. kV; One thousand volts.
Alternating Current
Kilovolt
Phase
Joule
22. Current Consumption. The amount of amps or milliamps needed to maintain operation of a control or device.
Supply Current
Grounded Conductor
Ripple
Response Time
23. 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.
Grounding Conductor
Electrodynamic
Environmental Protection Agency
Manual Reset Switch
24. 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
Root Mean Square
Process Meter
Threshold Response
25. One millionth of an amp.
Microamp
Current
Maximum Load Current
Direct Current
26. A high-intensity incandescent lamp with a quartz bulb containing an inert gas of iodine or bromine vapor.
Amp
Open Circuit
Potentiometer
Quartziodine Lamp
27. One of the very small discrete packets into which many forms of energy are subdivided.
Power Dissipation
Magnetic Flux
Quantum
Ripple
28. The voltage that is applied across a semiconductor junction to permit forward current through that junction and the device. Forward voltage is also known as 'bias.'
Forward Voltage
Field-Effect Transistor (FET)
Leakage current
Conductance
29. Normally Open.
N.O.
On/Off Controller
Rectifier
Celsius
30. Symbol used for wye configuration for three phase electrical connections.
VOM
Magnetic Flux
CMV
Y
31. An electrical circuit that is not 'made'. Contacts - switches or similar devices are open and preventing the floe of current.
Output
Supply Voltage
Bridge Rectifier
Open Circuit
32. A negative (-) electrode. The point of entry of electrons into a device from an external circuit. The negative electrode of a semiconductor diode.
Cathode
Quasiparticle
Grounded
Filament
33. 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.
Thermocouple
Open Circuit
Volt
Microvolt
34. A unit of electrical current named after French physicist Andr
Celsius
AWG
Electrolysis
Ampere
35. The opposition to electrical flow.
Grounded Conductor
Impedance
Frequency
Forward Voltage
36. The power of one watt operating for one hour - and equal to 3 -600 joules.
Flux
Power Supply
On/Off Controller
Watt-hour
37. The current that is gained by a transistor when it is connected in a common emitter circuit.
Momentary switch
National Fire Protection Association
Beta
Kilovolt amperes
38. The rapid on/off cycling of a relay caused by improper signal or adjustment - faulty contacts - or other malfunction.
Amplifier
Thermocouple
Chatter
Manual Reset Switch
39. An electrical resistor composed of semiconductor material - whose resistance is a known rapidly varying function of temperature.
International Electrotechnical Commission
Thermistor
Q-value
Underwriters Laboratories
40. ISA;
Instrument Society of America
Response Time
Maximum Operating Temperature
National Electrical Code
41. An electrically conductive fused salt or a solution where the charge is carried by ionic movement.
Electrolyte
Ripple
Microvolt
Circuit
42. That part of a circuit which is physically interconnected.
Weber
Conductor
Hard Wired
Thyristor
43. A reference point at zero potential with respect to the earth. In an electronic circuit it is the common return path for electric current. A conducting connection between the earth and an electrical circuit or electrical equipment. Also - the negativ
Occupational Safety & Health Administration
Quality Control
International Brotherhood of Electrical Workers
Ground
44. Kva; One thousand volt amps.
Process Meter
Kilovolt amperes
M
Rheostat
45. Pounds per square inch differential. The difference in pressure between two points.
Quantum
Power Dissipation
Underwriters Laboratories
PSID
46. The electrical demand of a process. Load can be expressed or calculated as amps (current) - ohms (resistance) or watts (power).
Conductor
Grounding Conductor
Load
Voltmeter
47. Response to the change in the level of the input signal.
Supply Current
VHF
Threshold Response
Modulated Light Source Control
48. A meter used to measure electrical resistance in units of ohms.
VHF
Voltmeter
Absolute Zero
Ohmeter
49. Electric current passing through an electrolyte which produces chemical changes in it.
Quasiparticle
Conduit
AWG
Electrolysis
50. Very High Frequency.
VHF
Phase Proportioning
Maximum Operating Temperature
Circuit