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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 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
battery
atom
semiconductor
2. The path of an electron in an atom or molecule
anode
Simple Circuite Contains?
Current
orbital
3. The instantaneous movement from negatively charged atoms to positively charged atoms
Reactive Power
Nuclear energy
Kirchoff's Voltage Law
static electricty
4. A circuit with a complete path - which allows for charges to move
Retail Substation
charge
closed circuit
Non-segregated Phase Bus
5. Is typically used for medium voltage applications where the 3 phase conductors can be mounted within the same enclosure.
Non-segregated Phase Bus
General Design Criterion 17 (GDC-17)
Reactive Power
reduced voltage
6. 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
Caution around DC Circuits
High Voltage Lines
electric generator
Potential transformers (PTs)
7. 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.
Panelboard
Retail Lines
Load center
Power
8. A material through which a charge does not move easily
insulator
ion
Power
PSB-1
9. An energy storage device that converts chemical energy to electricity when power is needed.
Transients
A motor control center (MCC
Battery
Molded case circuit breakers (MCCBs)
10. 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 -
Changes that need to be analyzed to determine impact on voltage - cable and breaker ratings - as well as battery capacity
ion
Molded case circuit breakers (MCCBs)
Switchgear
11. Positively charged particles of an atom
PSB-1
Three Phase Power
electrolyte
protons
12. An electrode where reduction occurs
cathode
electrolyte
electrode
Normal Operation
13. An electrode where free electrons are produced
Simple Circuite Contains?
protons
anode
SR Sources of power
14. A circuit with a break in its path
General Design Criterion 17 (GDC-17)
reduced voltage
open circuit
transformer
15. Used to convert mechanical energy to electrical energy coupled to the turbine shaft
cathode
semiconductor
Generator
atom
16. 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.
Normal Operation
conductor
Caution around DC Circuits
closed circuit
17. Is measured in watts and represents the power consumed by the resistive elements in an AC circuit
Retail Substation
Real Power
Current
Transmission Substation
18. Offsite power comes in via sartup transformer and some sites can backfeed power from grid via the main transformer OR even a crosstie
transformer
Normal Operation
Isolated Phase Bus (IPB)
Generator off-line
19. 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
Circuit Breaker
Transistors
Power
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.
transformer
Retail Lines
Distribution System
Battery Rooms
21. 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
Transients
Current
General Design Criterion 17 (GDC-17)
Battery Rooms
22. Neutral charged particles of an atom
neutrons
battery
Isolated Phase Bus (IPB)
Load center breakers
23. V=IR.
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24. Any path that electrons flow through
Apparent Power
circuit
Panelboard
superconductor
25. A material that has no resistance to electrical current - this usually occurs near absolute zero
superconductor
open circuit
Transmission Substation
Transients
26. Large battery - a battery charger - and a distribution panel
DC system is made up of 3 parts. What are they?
Current transformers (CTs)
Kirchoff's Voltage Law
Panelboard
27. 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.
Apparent Power
conductor
Isolated Phase Bus (IPB)
static electricty
28. Unit's main generator - offsite power via the switchyard - and redundant emergency diesel generators
open circuit
Normal Operation
electrolyte
SR Sources of power
29. 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
Apparent Power
transformer
Changes that need to be analyzed to determine impact on voltage - cable and breaker ratings - as well as battery capacity
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.
Typical DC system voltage ratings used in NPPs
Panelboard
Load center
insulator
31. A material in which charge moves through easily
conductor
electrolyte
orbital
open circuit
32. The flow of electrons
Generator
electricity
charge
Battery Rooms
33. Negatively charged particles of an atom
Non-segregated Phase Bus
electrons
closed circuit
ion
34. One or more cells connected in series
Current transformers (CTs)
electrode
Ohm's Law
battery
35. Voltage is stepped down again to serve smaller industrial and commercial customers as well as residential needs.
General Design Criterion 17 (GDC-17)
Retail Substation
Power
A motor control center (MCC
36. Voltage is stepped down again to serve smaller industrial and commercial customers as well as residential needs.
SR Sources of power
electric generator
Transformer (smaller)
Distribution System
37. (analogous to flow) predominantly flows on the surface of the conductor.
Potential transformers (PTs)
superconductor
Current
Changes that need to be analyzed to determine impact on voltage - cable and breaker ratings - as well as battery capacity
38. A solid conductor through which a current enters or exits a medium
Distribution System
atom
Circuit Breaker
electrode
39. A material that is usually insulated but becomes conductive through the addition of an impurity
PSB-1
semiconductor
Potential transformers (PTs)
Load center breakers
40. A fundamental quantity in electricity (+ or -)
charge
Transistors
Generator off-line
Swtichyard
41. 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
PSB-1
Simple Circuite Contains?
Transformer (smaller)
atom
42. 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
transformer
Reactive Power
Retail Lines
Battery
43. A device that changes mechanical energy into electricity
open circuit
electrode
electric generator
Transformer
44. Analogous to a power plant switchyard but on the load end. Voltage is stepped down to Distribution System voltages.
Transmission Substation
Fault
Transistors
Distribution System
45. 125 and 250 VDC.
ion
Typical DC system voltage ratings used in NPPs
insulator
Simple Circuite Contains?
46. A voltage source that does not change polarity such as that delivered from a battery.
Battery Rooms
Battery
Isolated Phase Bus (IPB)
DC
47. 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.
Transmission Substation
High Voltage Lines
Reactive Power
Transformer
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
Generator off-line
Current transformers (CTs)
Changes that need to be analyzed to determine impact on voltage - cable and breaker ratings - as well as battery capacity
Current
49. 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
protons
High Voltage Lines
current electricity
50. The product of voltage times current
Power
circuit
High Voltage Lines
Retail Lines