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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. Atoms that have acquired an electrical charge
Non-segregated Phase Bus
Nuclear energy
ion
Isolated Phase Bus (IPB)
2. Voltage is stepped down again to serve smaller industrial and commercial customers as well as residential needs.
Retail Substation
electrolyte
A motor control center (MCC
conductor
3. One or more cells connected in series
battery
Kirchoff's Current law
conductor
electricity
4. 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
Battery Rooms
Kirchoff's Voltage Law
Generator
5. (analogous to flow) predominantly flows on the surface of the conductor.
Diodes
electrode
Current
neutrons
6. An electrode where free electrons are produced
Fault
orbital
anode
current electricity
7. Is measured in watts and represents the power consumed by the resistive elements in an AC circuit
Real Power
Molded case circuit breakers (MCCBs)
Power
Panelboard
8. Voltage is stepped down again to serve smaller industrial and commercial customers as well as residential needs.
open circuit
cathode
Power
Transformer (smaller)
9. 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
Reactive Power
Disconnect switches
conductor
Swtichyard
10. A circuit with a complete path - which allows for charges to move
Power
transformer
current electricity
closed circuit
11. Unit's main generator - offsite power via the switchyard - and redundant emergency diesel generators
Load center breakers
Transients
SR Sources of power
Transformer
12. A voltage source that does not change polarity such as that delivered from a battery.
battery
Real Power
Battery Rooms
DC
13. The product of voltage times current
Circuit Breaker
Power
transformer
Panelboard
14. 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.
A motor control center (MCC
Transmission Substation
closed circuit
battery
15. Changes in voltage caused by motor starts or other loads being switched onto an electrical system
conductor
Simple Circuite Contains?
Transients
Normal Operation
16. 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
superconductor
anode
Swtichyard
Generator off-line
17. 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
static electricty
Battery Rooms
transformer
18. Are used at low voltages rather than medium voltage and they contain CTs and protective devices as part of the assembly.
cathode
Load center breakers
Potential transformers (PTs)
Kirchoff's Current law
19. 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.
PSB-1
Caution around DC Circuits
Retail Substation
electrolyte
20. Total Current entering a junction must equal current leaving a junction
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21. Large battery - a battery charger - and a distribution panel
Swtichyard
Fault
DC system is made up of 3 parts. What are they?
Disconnect switches
22. V=IR.
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23. 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)
General Design Criterion 17 (GDC-17)
insulator
Current
24. Neutral charged particles of an atom
conductor
neutrons
Transistors
SR Sources of power
25. Changes the voltage of electricity so that it can be transferred over long distances
Transistors
Load center breakers
Retail Substation
transformer
26. 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 ****
Apparent Power
Simple Circuite Contains?
Fault
Circuit Breaker
27. 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.
Distribution System
battery
Typical DC system voltage ratings used in NPPs
Ohm's Law
28. Positively charged particles of an atom
protons
Generator
insulator
electrolyte
29. 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
Kirchoff's Current law
Current transformers (CTs)
Switchgear
30. Voltage Source - Conductor - Switch - Load
Switchgear
Swtichyard
Changes that need to be analyzed to determine impact on voltage - cable and breaker ratings - as well as battery capacity
Simple Circuite Contains?
31. The flow of electrons (-) through a material
circuit
Switchgear
electric generator
current electricity
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
Molded case circuit breakers (MCCBs)
PSB-1
electric generator
battery
33. Main Generator feeds main transformer - aux transformer (to aux loads) and crosstie to train B
Kirchoff's Current law
Normal Operation
Transmission Substation
Typical DC system voltage ratings used in NPPs
34. Building blocks of elements consisting of a positively charged nucleus surrounded by electrons
Panelboard
Power
atom
Battery
35. 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
General Design Criterion 17 (GDC-17)
Switchgear
Panelboard
36. The source voltage is equal to the sum of the voltage drops across the elements of the circuit and the load.
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37. A fundamental quantity in electricity (+ or -)
charge
Load center
Normal Operation
Reactive Power
38. Used to optimize power output. Multiply by root 3.
Load center
Swtichyard
Three Phase Power
DC
39. 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
reduced voltage
General Design Criterion 17 (GDC-17)
Apparent Power
battery
40. A material that has no resistance to electrical current - this usually occurs near absolute zero
Transients
ion
electrode
superconductor
41. Significant impact on the capability of equipment to perform properly since the torque delivered by a motor is proportional to the voltage squared
Fault
Changes that need to be analyzed to determine impact on voltage - cable and breaker ratings - as well as battery capacity
reduced voltage
Transients
42. 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 -
Apparent Power
superconductor
Changes that need to be analyzed to determine impact on voltage - cable and breaker ratings - as well as battery capacity
Power
43. An energy storage device that converts chemical energy to electricity when power is needed.
Transistors
electricity
Battery
Three Phase Power
44. The instantaneous movement from negatively charged atoms to positively charged atoms
static electricty
Nuclear energy
atom
Three Phase Power
45. Offsite power comes in via sartup transformer and some sites can backfeed power from grid via the main transformer OR even a crosstie
protons
Generator off-line
Switchgear
cathode
46. 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.
atom
static electricty
semiconductor
Load center
47. 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.
closed circuit
Nuclear energy
Normal Operation
Non-segregated Phase Bus
48. 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.
semiconductor
Transformer (smaller)
Kirchoff's Current law
Molded case circuit breakers (MCCBs)
49. Used for transmission systems which are used for transporting bulk power from large generators to areas with heavy load concentrations such as cities.
General Design Criterion 17 (GDC-17)
High Voltage Lines
Transistors
circuit
50. A material that dissolves in water producing a solution that conducts electricity
electrolyte
Changes that need to be analyzed to determine impact on voltage - cable and breaker ratings - as well as battery capacity
High Voltage Lines
Current transformers (CTs)