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Test your basic knowledge |
Electrical Engineering
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. An electrode where free electrons are produced
anode
Isolated Phase Bus (IPB)
DC
cathode
2. Are used at low voltages rather than medium voltage and they contain CTs and protective devices as part of the assembly.
Load center breakers
ion
cathode
electrolyte
3. The path of an electron in an atom or molecule
High Voltage Lines
Nuclear energy
A motor control center (MCC
orbital
4. A material that is usually insulated but becomes conductive through the addition of an impurity
Circuit Breaker
semiconductor
Transients
Retail Substation
5. Represents the power transferred to or from capacitive and inductive elements in an AC circuit and is measured in volt-amperes reactive. Voltage and current are 90
Generator off-line
Reactive Power
Transformer
protons
6. High voltage breakers and buses are arranged to allow power flow on the grid while isolating individual generators - transformers or transmission lines as needed. Power from the plant is delivered to the grid via the plant ****** - and the ******* se
Current transformers (CTs)
Swtichyard
charge
Apparent Power
7. Used to convert mechanical energy to electrical energy coupled to the turbine shaft
Swtichyard
Generator
Current
Fault
8. A material that dissolves in water producing a solution that conducts electricity
protons
Distribution System
electrolyte
Nuclear energy
9. A device that changes mechanical energy into electricity
electric generator
Typical DC system voltage ratings used in NPPs
Current
Potential transformers (PTs)
10. Used to supply power to large industrial and commercial facilities as well as the Retail System. lines can be compared to state highways and major roads around cities.
Apparent Power
Diodes
Potential transformers (PTs)
Distribution System
11. The instantaneous movement from negatively charged atoms to positively charged atoms
static electricty
High Voltage Lines
electrode
SR Sources of power
12. Total Current entering a junction must equal current leaving a junction
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13. Nuclear fuel is used to produce heat which is used to create steam. The steam is used to spin the turbine. The turbine shaft is connected to the generator rotor. The mechanical energy is converted to electrical energy through the generator.
Transmission Substation
Nuclear energy
Circuit Breaker
Battery Rooms
14. Is the vector sum of real and reactive power in an AC circuit and is measured in volt-amperes.
Molded case circuit breakers (MCCBs)
Battery
Apparent Power
Retail Lines
15. Are used to provide low voltage circuits for use in metering - monitoring - and protective relaying applications. The turns ratio of the transformer determines the low voltage rating as a function of the system voltage - and is often selected to be 1
High Voltage Lines
Potential transformers (PTs)
Simple Circuite Contains?
circuit
16. The flow of electrons
electricity
semiconductor
Panelboard
DC system is made up of 3 parts. What are they?
17. A circuit with a break in its path
open circuit
neutrons
ion
Current transformers (CTs)
18. Significant impact on the capability of equipment to perform properly since the torque delivered by a motor is proportional to the voltage squared
reduced voltage
Molded case circuit breakers (MCCBs)
A motor control center (MCC
orbital
19. Any path that electrons flow through
Three Phase Power
circuit
Simple Circuite Contains?
superconductor
20. A circuit with a complete path - which allows for charges to move
semiconductor
closed circuit
Transmission Substation
orbital
21. Used for transmission systems which are used for transporting bulk power from large generators to areas with heavy load concentrations such as cities.
Battery
charge
Power
High Voltage Lines
22. Atoms that have acquired an electrical charge
ion
transformer
Non-segregated Phase Bus
superconductor
23. protect your eyes and clothing. air must be circulated through the battery rooms with large stationary batteries to prevent a build-up of a combustible mixture.System cannot be grounded. First ground should do nothing.
electrons
atom
Changes that need to be analyzed to determine impact on voltage - cable and breaker ratings - as well as battery capacity
Caution around DC Circuits
24. A condition where one or more phases have come into contact with ground or other phase(s) of the circuit - or the insulation separating them has been degraded. The current flow is only limited by the impedance between the source(s) and the ****
Battery
charge
Molded case circuit breakers (MCCBs)
Fault
25. Is a configuration used for very high current bus assemblies typically operating at generator voltage levels of 20 to 24 kV where each conductor is mounted within its own enclosure.
Isolated Phase Bus (IPB)
electricity
electrons
Battery Rooms
26. Voltage is stepped down again to serve smaller industrial and commercial customers as well as residential needs.
Ohm's Law
Switchgear
Swtichyard
Retail Substation
27. V=IR.
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28. A material through which a charge does not move easily
circuit
insulator
A motor control center (MCC
cathode
29. An energy storage device that converts chemical energy to electricity when power is needed.
Battery
Transients
ion
Potential transformers (PTs)
30. A voltage source that does not change polarity such as that delivered from a battery.
Changes that need to be analyzed to determine impact on voltage - cable and breaker ratings - as well as battery capacity
anode
Real Power
DC
31. Analogous to a power plant switchyard but on the load end. Voltage is stepped down to Distribution System voltages.
Molded case circuit breakers (MCCBs)
semiconductor
Retail Lines
Transmission Substation
32. An electrode where reduction occurs
Swtichyard
Typical DC system voltage ratings used in NPPs
Fault
cathode
33. Used to optimize power output. Multiply by root 3.
current electricity
electrode
DC
Three Phase Power
34. One or more cells connected in series
Transients
Apparent Power
battery
Potential transformers (PTs)
35. Requires - in part - that (1) electric power from the transmission network to the onsite distribution system shall be supplied by two physically independent circuits (not necessarily on separate rights of way) designed and located so as to minimize t
electrode
Swtichyard
Battery Rooms
General Design Criterion 17 (GDC-17)
36. The flow of electrons (-) through a material
Transmission Substation
current electricity
electrons
Current transformers (CTs)
37. Are used to supply power to smaller industrial and commercial users as well as residential customers. These lines can be compared to local roads such as the one in your local area or neighborhood - i.e. they're designed to handle the needs of local t
Panelboard
Retail Lines
Transients
Normal Operation
38. A material in which charge moves through easily
conductor
Load center breakers
Apparent Power
SR Sources of power
39. An assembly of low voltage circuit breakers and/or starters used to supply individual loads of small to moderate sizes. Each feeder circuit is typically contained in a separate compartment or bucket.
Power
Transistors
A motor control center (MCC
ion
40. Is typically used for medium voltage applications where the 3 phase conductors can be mounted within the same enclosure.
static electricty
current electricity
Reactive Power
Non-segregated Phase Bus
41. Changes the voltage of electricity so that it can be transferred over long distances
transformer
Swtichyard
SR Sources of power
superconductor
42. (analogous to flow) predominantly flows on the surface of the conductor.
DC
Current
Transients
Real Power
43. Voltage is stepped down again to serve smaller industrial and commercial customers as well as residential needs.
Transformer (smaller)
Swtichyard
electricity
Apparent Power
44. Unit's main generator - offsite power via the switchyard - and redundant emergency diesel generators
SR Sources of power
protons
current electricity
Nuclear energy
45. Positively charged particles of an atom
battery
DC system is made up of 3 parts. What are they?
conductor
protons
46. Building blocks of elements consisting of a positively charged nucleus surrounded by electrons
atom
Non-segregated Phase Bus
Kirchoff's Voltage Law
closed circuit
47. Temperature Controlled
electrolyte
charge
Battery Rooms
Kirchoff's Voltage Law
48. Are used to provide low current circuits for use in metering - monitoring - and protective relaying applications. The turns ratio determines the amount of current that will be available in the secondary as a function of the system current on the prim
Current transformers (CTs)
transformer
Reactive Power
Transformer (smaller)
49. A material that has no resistance to electrical current - this usually occurs near absolute zero
Disconnect switches
Simple Circuite Contains?
Non-segregated Phase Bus
superconductor
50. Operate somewhat like check valves such that current only flows in one direction - when the voltage on the input is higher than the output
Diodes
cathode
Panelboard
Ohm's Law