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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 ****
Battery
Three Phase Power
Diodes
Fault
2. A circuit with a break in its path
Real Power
electric generator
open circuit
atom
3. 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.
Circuit Breaker
ion
A motor control center (MCC
Three Phase Power
4. The flow of electrons (-) through a material
Generator
Non-segregated Phase Bus
current electricity
Switchgear
5. 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
Load center
Switchgear
Circuit Breaker
Swtichyard
6. Used for transmission systems which are used for transporting bulk power from large generators to areas with heavy load concentrations such as cities.
High Voltage Lines
Molded case circuit breakers (MCCBs)
General Design Criterion 17 (GDC-17)
superconductor
7. Analogous to a power plant switchyard but on the load end. Voltage is stepped down to Distribution System voltages.
High Voltage Lines
Transformer
Swtichyard
Transmission Substation
8. Building blocks of elements consisting of a positively charged nucleus surrounded by electrons
Apparent Power
atom
circuit
Swtichyard
9. A material that has no resistance to electrical current - this usually occurs near absolute zero
Kirchoff's Voltage Law
orbital
superconductor
Battery
10. 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
Kirchoff's Voltage Law
Normal Operation
PSB-1
General Design Criterion 17 (GDC-17)
11. Offsite power comes in via sartup transformer and some sites can backfeed power from grid via the main transformer OR even a crosstie
Generator off-line
cathode
Current transformers (CTs)
Transistors
12. Temperature Controlled
Battery Rooms
Transformer (smaller)
electrode
orbital
13. A material in which charge moves through easily
cathode
DC system is made up of 3 parts. What are they?
ion
conductor
14. A material that dissolves in water producing a solution that conducts electricity
Non-segregated Phase Bus
static electricty
electrolyte
General Design Criterion 17 (GDC-17)
15. Atoms that have acquired an electrical charge
ion
closed circuit
High Voltage Lines
Isolated Phase Bus (IPB)
16. 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.
Apparent Power
Nuclear energy
Transients
reduced voltage
17. 125 and 250 VDC.
Apparent Power
Transmission Substation
Caution around DC Circuits
Typical DC system voltage ratings used in NPPs
18. 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 -
reduced voltage
Changes that need to be analyzed to determine impact on voltage - cable and breaker ratings - as well as battery capacity
Isolated Phase Bus (IPB)
Ohm's Law
19. Voltage is stepped down again to serve smaller industrial and commercial customers as well as residential needs.
Battery Rooms
Reactive Power
Retail Substation
DC
20. 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
electrode
Circuit Breaker
protons
21. The path of an electron in an atom or molecule
Battery
orbital
Load center
Diodes
22. Positively charged particles of an atom
static electricty
Transformer (smaller)
Retail Substation
protons
23. Is measured in watts and represents the power consumed by the resistive elements in an AC circuit
Typical DC system voltage ratings used in NPPs
High Voltage Lines
insulator
Real Power
24. 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.
Transformer
Isolated Phase Bus (IPB)
A motor control center (MCC
Swtichyard
25. 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.
Panelboard
PSB-1
Molded case circuit breakers (MCCBs)
Retail Substation
26. 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
Power
Transmission Substation
open circuit
27. The instantaneous movement from negatively charged atoms to positively charged atoms
Changes that need to be analyzed to determine impact on voltage - cable and breaker ratings - as well as battery capacity
current electricity
Transistors
static electricty
28. 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.
static electricty
Potential transformers (PTs)
Distribution System
Panelboard
29. 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.
Load center
protons
electricity
current electricity
30. V=IR.
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on line
183
31. Are used at low voltages rather than medium voltage and they contain CTs and protective devices as part of the assembly.
Non-segregated Phase Bus
protons
DC system is made up of 3 parts. What are they?
Load center breakers
32. May be used to power various low voltage loads and are typically used for applications that do not require any form of remote control.
Panelboard
Distribution System
battery
Three Phase Power
33. The flow of electrons
ion
electricity
High Voltage Lines
Kirchoff's Current law
34. Negatively charged particles of an atom
Transformer (smaller)
cathode
Normal Operation
electrons
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
General Design Criterion 17 (GDC-17)
Non-segregated Phase Bus
Current
electricity
36. Unit's main generator - offsite power via the switchyard - and redundant emergency diesel generators
Current
Power
Load center breakers
SR Sources of power
37. A material through which a charge does not move easily
Caution around DC Circuits
reduced voltage
Kirchoff's Voltage Law
insulator
38. Operate somewhat like check valves such that current only flows in one direction - when the voltage on the input is higher than the output
Transients
Diodes
Panelboard
neutrons
39. Is typically used for medium voltage applications where the 3 phase conductors can be mounted within the same enclosure.
protons
Isolated Phase Bus (IPB)
Molded case circuit breakers (MCCBs)
Non-segregated Phase Bus
40. A device that changes mechanical energy into electricity
Transients
electric generator
DC system is made up of 3 parts. What are they?
neutrons
41. (analogous to flow) predominantly flows on the surface of the conductor.
Current
Generator
Isolated Phase Bus (IPB)
protons
42. An energy storage device that converts chemical energy to electricity when power is needed.
Swtichyard
Reactive Power
Battery
Load center
43. Used in numerous applications to amplify or perform switching operations.
Transistors
current electricity
Transients
Real Power
44. Changes in voltage caused by motor starts or other loads being switched onto an electrical system
Transients
atom
Molded case circuit breakers (MCCBs)
Retail Lines
45. Large battery - a battery charger - and a distribution panel
Transistors
Ohm's Law
conductor
DC system is made up of 3 parts. What are they?
46. 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.
Retail Lines
Isolated Phase Bus (IPB)
electrolyte
Potential transformers (PTs)
47. 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.
Caution around DC Circuits
Changes that need to be analyzed to determine impact on voltage - cable and breaker ratings - as well as battery capacity
Current
Circuit Breaker
48. 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.
Circuit Breaker
A motor control center (MCC
Generator off-line
Apparent Power
49. A fundamental quantity in electricity (+ or -)
electric generator
conductor
charge
Retail Lines
50. Is the vector sum of real and reactive power in an AC circuit and is measured in volt-amperes.
electrode
reduced voltage
superconductor
Apparent Power
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