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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. Negatively charged particles of an atom
Current
conductor
electrons
DC system is made up of 3 parts. What are they?
2. 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
closed circuit
electric generator
Swtichyard
insulator
3. An assembly of circuit breakers typically used to supply power to large motors and medium or low voltage transformers within the auxiliary power system. Each breaker is contained in a separate cubicle along with associated current transformers - and
Transformer (smaller)
atom
Three Phase Power
Switchgear
4. Voltage is stepped down again to serve smaller industrial and commercial customers as well as residential needs.
Retail Substation
Retail Lines
semiconductor
Nuclear energy
5. Building blocks of elements consisting of a positively charged nucleus surrounded by electrons
Ohm's Law
atom
Normal Operation
Changes that need to be analyzed to determine impact on voltage - cable and breaker ratings - as well as battery capacity
6. Offsite power comes in via sartup transformer and some sites can backfeed power from grid via the main transformer OR even a crosstie
Panelboard
Generator off-line
SR Sources of power
battery
7. The flow of electrons (-) through a material
Typical DC system voltage ratings used in NPPs
circuit
Load center breakers
current electricity
8. Atoms that have acquired an electrical charge
Swtichyard
ion
Three Phase Power
Real Power
9. Is typically used for medium voltage applications where the 3 phase conductors can be mounted within the same enclosure.
superconductor
Three Phase Power
A motor control center (MCC
Non-segregated Phase Bus
10. Voltage Source - Conductor - Switch - Load
Kirchoff's Voltage Law
Generator
Nuclear energy
Simple Circuite Contains?
11. Temperature Controlled
electrode
Battery Rooms
Real Power
Generator off-line
12. 125 and 250 VDC.
Apparent Power
Typical DC system voltage ratings used in NPPs
Retail Substation
Transformer
13. Is measured in watts and represents the power consumed by the resistive elements in an AC circuit
High Voltage Lines
electrons
Real Power
Generator
14. 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
Normal Operation
General Design Criterion 17 (GDC-17)
Reactive Power
Disconnect switches
15. Changes in voltage caused by motor starts or other loads being switched onto an electrical system
Transients
DC system is made up of 3 parts. What are they?
insulator
Diodes
16. Unit's main generator - offsite power via the switchyard - and redundant emergency diesel generators
Power
Load center breakers
General Design Criterion 17 (GDC-17)
SR Sources of power
17. The product of voltage times current
Load center
superconductor
Power
electric generator
18. Used for transmission systems which are used for transporting bulk power from large generators to areas with heavy load concentrations such as cities.
Generator
Load center breakers
High Voltage Lines
open circuit
19. The power output from the plant is stepped up in voltage to match the grid voltage. Transformers that are used to provide offsite power to the plant (e.g. when the generator is off-line) step down the voltage.
Nuclear energy
Transformer
Caution around DC Circuits
Retail Lines
20. 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)
Swtichyard
Distribution System
Current
21. Used at low voltage levels (600 volts and below) to feed individual loads. These devices typically contain a thermal magnetic element which provides an inverse time tripping characteristic.
Molded case circuit breakers (MCCBs)
Transmission Substation
charge
Nuclear energy
22. Analogous to a power plant switchyard but on the load end. Voltage is stepped down to Distribution System voltages.
Transmission Substation
Disconnect switches
Current transformers (CTs)
electrode
23. Used to optimize power output. Multiply by root 3.
circuit
Three Phase Power
Load center breakers
Switchgear
24. 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
A motor control center (MCC
Retail Lines
electric generator
General Design Criterion 17 (GDC-17)
25. Similar to switchgear except for use in low voltage versus medium voltage applications. used to supply power to motor control centers and large individual low voltage motors in some applications.
charge
Load center
Transistors
Panelboard
26. The instantaneous movement from negatively charged atoms to positively charged atoms
Kirchoff's Current law
circuit
Current
static electricty
27. Main Generator feeds main transformer - aux transformer (to aux loads) and crosstie to train B
DC system is made up of 3 parts. What are they?
protons
Normal Operation
Kirchoff's Voltage Law
28. A material that is usually insulated but becomes conductive through the addition of an impurity
Distribution System
Kirchoff's Voltage Law
Panelboard
semiconductor
29. An electrode where free electrons are produced
Generator off-line
anode
Transformer (smaller)
Circuit Breaker
30. May be used to power various low voltage loads and are typically used for applications that do not require any form of remote control.
circuit
transformer
Transients
Panelboard
31. Used in numerous applications to amplify or perform switching operations.
atom
Potential transformers (PTs)
Transistors
Diodes
32. Power Systems Branch [Position] one required nuclear utilities to install degraded grid voltage relay schemes to preclude connecting safety related loads to the grid following an accident if grid voltage should be inadequate to support required opera
current electricity
Transformer
superconductor
PSB-1
33. 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
Retail Lines
ion
insulator
conductor
34. A mechanical switching device used to either enable or interrupt current flow in a circuit. Typically provides both overload and fault protection. Is similar to a fuse; however - can be reset and reused.
Transformer (smaller)
electrode
open circuit
Circuit Breaker
35. Is the vector sum of real and reactive power in an AC circuit and is measured in volt-amperes.
transformer
A motor control center (MCC
Diodes
Apparent Power
36. The flow of electrons
DC system is made up of 3 parts. What are they?
Simple Circuite Contains?
electricity
Retail Lines
37. A circuit with a complete path - which allows for charges to move
Non-segregated Phase Bus
DC
closed circuit
battery
38. Changes the voltage of electricity so that it can be transferred over long distances
Changes that need to be analyzed to determine impact on voltage - cable and breaker ratings - as well as battery capacity
transformer
Kirchoff's Voltage Law
Power
39. 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.
Fault
Caution around DC Circuits
Transmission Substation
Transients
40. Total Current entering a junction must equal current leaving a junction
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183
41. A material that has no resistance to electrical current - this usually occurs near absolute zero
Transistors
superconductor
closed circuit
current electricity
42. Are used at low voltages rather than medium voltage and they contain CTs and protective devices as part of the assembly.
current electricity
Potential transformers (PTs)
High Voltage Lines
Load center breakers
43. 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.
Retail Substation
closed circuit
superconductor
Distribution System
44. V=IR.
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45. The path of an electron in an atom or molecule
Potential transformers (PTs)
Kirchoff's Voltage Law
Switchgear
orbital
46. If you are requesting service for new loads - or are making changes that affect the time when a load would operate or the amount of load -
Load center breakers
Changes that need to be analyzed to determine impact on voltage - cable and breaker ratings - as well as battery capacity
Fault
Transients
47. Any path that electrons flow through
Reactive Power
Load center
High Voltage Lines
circuit
48. A circuit with a break in its path
DC system is made up of 3 parts. What are they?
electricity
open circuit
circuit
49. A material through which a charge does not move easily
insulator
cathode
Circuit Breaker
Apparent Power
50. (analogous to flow) predominantly flows on the surface of the conductor.
Current
Isolated Phase Bus (IPB)
Nuclear energy
Current transformers (CTs)
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