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Test your basic knowledge |
Electrical Engineering
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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 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 ****
Fault
Switchgear
Kirchoff's Voltage Law
SR Sources of power
2. Changes in voltage caused by motor starts or other loads being switched onto an electrical system
charge
Transients
Swtichyard
neutrons
3. A material through which a charge does not move easily
PSB-1
insulator
open circuit
electricity
4. 125 and 250 VDC.
Non-segregated Phase Bus
Typical DC system voltage ratings used in NPPs
Panelboard
Retail Substation
5. A material that dissolves in water producing a solution that conducts electricity
Changes that need to be analyzed to determine impact on voltage - cable and breaker ratings - as well as battery capacity
electricity
Non-segregated Phase Bus
electrolyte
6. An energy storage device that converts chemical energy to electricity when power is needed.
Battery
Transformer
Battery Rooms
Generator off-line
7. Used to optimize power output. Multiply by root 3.
current electricity
Three Phase Power
Kirchoff's Voltage Law
electrons
8. Offsite power comes in via sartup transformer and some sites can backfeed power from grid via the main transformer OR even a crosstie
DC
Battery
A motor control center (MCC
Generator off-line
9. V=IR.
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10. A material that is usually insulated but becomes conductive through the addition of an impurity
Battery Rooms
Distribution System
semiconductor
Transients
11. May be used to power various low voltage loads and are typically used for applications that do not require any form of remote control.
open circuit
Simple Circuite Contains?
Panelboard
PSB-1
12. The instantaneous movement from negatively charged atoms to positively charged atoms
Generator
static electricty
electric generator
Nuclear energy
13. A fundamental quantity in electricity (+ or -)
General Design Criterion 17 (GDC-17)
charge
Typical DC system voltage ratings used in NPPs
Distribution System
14. A solid conductor through which a current enters or exits a medium
Diodes
Load center breakers
atom
electrode
15. 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
Swtichyard
DC system is made up of 3 parts. What are they?
Ohm's Law
Switchgear
16. Atoms that have acquired an electrical charge
ion
General Design Criterion 17 (GDC-17)
Transistors
Retail Lines
17. Used in numerous applications to amplify or perform switching operations.
Transistors
Transformer (smaller)
ion
Load center
18. Are used at low voltages rather than medium voltage and they contain CTs and protective devices as part of the assembly.
Isolated Phase Bus (IPB)
Load center breakers
semiconductor
Current
19. Changes the voltage of electricity so that it can be transferred over long distances
Non-segregated Phase Bus
Typical DC system voltage ratings used in NPPs
transformer
Kirchoff's Voltage Law
20. 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.
electric generator
Distribution System
Apparent Power
atom
21. Voltage Source - Conductor - Switch - Load
Generator
Kirchoff's Current law
Simple Circuite Contains?
transformer
22. The flow of electrons (-) through a material
reduced voltage
DC system is made up of 3 parts. What are they?
current electricity
Current
23. 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
orbital
PSB-1
Distribution System
Apparent Power
24. A material in which charge moves through easily
conductor
Fault
Generator off-line
Real Power
25. Temperature Controlled
Battery Rooms
Typical DC system voltage ratings used in NPPs
SR Sources of power
Fault
26. 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.
Molded case circuit breakers (MCCBs)
Isolated Phase Bus (IPB)
Caution around DC Circuits
circuit
27. A voltage source that does not change polarity such as that delivered from a battery.
DC
General Design Criterion 17 (GDC-17)
Caution around DC Circuits
Current
28. 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
Switchgear
Generator off-line
Load center breakers
DC system is made up of 3 parts. What are they?
29. 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.
orbital
Switchgear
Molded case circuit breakers (MCCBs)
superconductor
30. 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.
Transmission Substation
current electricity
Circuit Breaker
Ohm's Law
31. Analogous to a power plant switchyard but on the load end. Voltage is stepped down to Distribution System voltages.
Current
Apparent Power
Isolated Phase Bus (IPB)
Transmission Substation
32. 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 -
Battery Rooms
Changes that need to be analyzed to determine impact on voltage - cable and breaker ratings - as well as battery capacity
atom
Generator off-line
33. Any path that electrons flow through
Battery Rooms
Current transformers (CTs)
Isolated Phase Bus (IPB)
circuit
34. Used to convert mechanical energy to electrical energy coupled to the turbine shaft
Caution around DC Circuits
Generator
Generator off-line
Distribution System
35. Main Generator feeds main transformer - aux transformer (to aux loads) and crosstie to train B
Circuit Breaker
Transients
Normal Operation
conductor
36. Is typically used for medium voltage applications where the 3 phase conductors can be mounted within the same enclosure.
Non-segregated Phase Bus
Transmission Substation
electric generator
Current
37. 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.
superconductor
Load center
transformer
A motor control center (MCC
38. The product of voltage times current
Current
Power
Disconnect switches
closed circuit
39. Positively charged particles of an atom
electrolyte
electric generator
superconductor
protons
40. Used to isolate equipment but are typically not designed to be opened or closed while the circuit is energized (i.e. they're not designed to interrupt current). Also used in switchyard to isolate equipment
Retail Substation
Disconnect switches
Retail Lines
electrons
41. A device that changes mechanical energy into electricity
Load center
Normal Operation
electric generator
Load center breakers
42. A circuit with a break in its path
open circuit
Distribution System
Transformer (smaller)
General Design Criterion 17 (GDC-17)
43. A material that has no resistance to electrical current - this usually occurs near absolute zero
superconductor
Three Phase Power
Transformer (smaller)
Transmission Substation
44. 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
Simple Circuite Contains?
Retail Lines
Transients
Power
45. The path of an electron in an atom or molecule
Swtichyard
Transients
orbital
Reactive Power
46. 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
General Design Criterion 17 (GDC-17)
Normal Operation
electric generator
47. A circuit with a complete path - which allows for charges to move
transformer
Battery Rooms
Power
closed circuit
48. Significant impact on the capability of equipment to perform properly since the torque delivered by a motor is proportional to the voltage squared
insulator
Changes that need to be analyzed to determine impact on voltage - cable and breaker ratings - as well as battery capacity
reduced voltage
Retail Substation
49. 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.
current electricity
Transformer (smaller)
Potential transformers (PTs)
Load center
50. Is the vector sum of real and reactive power in an AC circuit and is measured in volt-amperes.
Ohm's Law
High Voltage Lines
charge
Apparent Power
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