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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. Unit's main generator - offsite power via the switchyard - and redundant emergency diesel generators
Apparent Power
Load center breakers
open circuit
SR Sources of power
2. Positively charged particles of an atom
Load center breakers
Diodes
protons
Typical DC system voltage ratings used in NPPs
3. The instantaneous movement from negatively charged atoms to positively charged atoms
Caution around DC Circuits
Generator
static electricty
Battery Rooms
4. A circuit with a complete path - which allows for charges to move
closed circuit
Transformer (smaller)
Fault
ion
5. The product of voltage times current
Swtichyard
Power
Changes that need to be analyzed to determine impact on voltage - cable and breaker ratings - as well as battery capacity
DC
6. 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
Load center breakers
DC
General Design Criterion 17 (GDC-17)
electric generator
7. (analogous to flow) predominantly flows on the surface of the conductor.
Switchgear
battery
Current
Swtichyard
8. Total Current entering a junction must equal current leaving a junction
9. 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 ****
reduced voltage
charge
Power
Fault
10. An energy storage device that converts chemical energy to electricity when power is needed.
current electricity
Load center breakers
Three Phase Power
Battery
11. The path of an electron in an atom or molecule
Potential transformers (PTs)
Power
orbital
anode
12. A material that has no resistance to electrical current - this usually occurs near absolute zero
ion
semiconductor
cathode
superconductor
13. 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
Retail Substation
Changes that need to be analyzed to determine impact on voltage - cable and breaker ratings - as well as battery capacity
transformer
14. 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.
cathode
orbital
Transformer
electrons
15. A material that is usually insulated but becomes conductive through the addition of an impurity
semiconductor
Non-segregated Phase Bus
reduced voltage
Ohm's Law
16. Is measured in watts and represents the power consumed by the resistive elements in an AC circuit
Real Power
cathode
Circuit Breaker
Molded case circuit breakers (MCCBs)
17. 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
circuit
Current transformers (CTs)
Real Power
reduced voltage
18. Voltage is stepped down again to serve smaller industrial and commercial customers as well as residential needs.
Retail Substation
Retail Lines
circuit
DC system is made up of 3 parts. What are they?
19. 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
High Voltage Lines
Switchgear
Simple Circuite Contains?
DC
20. Voltage Source - Conductor - Switch - Load
electric generator
Distribution System
Simple Circuite Contains?
Current transformers (CTs)
21. Used to optimize power output. Multiply by root 3.
conductor
electric generator
Simple Circuite Contains?
Three Phase Power
22. 125 and 250 VDC.
Transients
electrolyte
Typical DC system voltage ratings used in NPPs
anode
23. A material that dissolves in water producing a solution that conducts electricity
electrolyte
transformer
Diodes
Distribution System
24. Changes the voltage of electricity so that it can be transferred over long distances
Normal Operation
insulator
Switchgear
transformer
25. 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
orbital
Power
anode
26. Negatively charged particles of an atom
Circuit Breaker
electrons
Typical DC system voltage ratings used in NPPs
Transistors
27. Voltage is stepped down again to serve smaller industrial and commercial customers as well as residential needs.
closed circuit
insulator
Generator
Transformer (smaller)
28. A solid conductor through which a current enters or exits a medium
electrode
neutrons
Typical DC system voltage ratings used in NPPs
transformer
29. A material through which a charge does not move easily
Load center
Distribution System
insulator
charge
30. Is typically used for medium voltage applications where the 3 phase conductors can be mounted within the same enclosure.
Current
transformer
Caution around DC Circuits
Non-segregated Phase Bus
31. May be used to power various low voltage loads and are typically used for applications that do not require any form of remote control.
electric generator
Panelboard
electrons
Disconnect switches
32. Building blocks of elements consisting of a positively charged nucleus surrounded by electrons
atom
cathode
conductor
battery
33. 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
Kirchoff's Voltage Law
current electricity
Retail Lines
34. One or more cells connected in series
battery
DC
insulator
Battery Rooms
35. 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
cathode
circuit
Caution around DC Circuits
36. The flow of electrons (-) through a material
Distribution System
current electricity
Transformer (smaller)
anode
37. 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
Diodes
DC
Potential transformers (PTs)
Load center
38. 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
Transients
Reactive Power
electricity
Isolated Phase Bus (IPB)
39. Temperature Controlled
Battery Rooms
reduced voltage
A motor control center (MCC
Swtichyard
40. Are used at low voltages rather than medium voltage and they contain CTs and protective devices as part of the assembly.
Transients
atom
Kirchoff's Current law
Load center breakers
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
Transients
PSB-1
charge
electricity
42. Any path that electrons flow through
Swtichyard
Simple Circuite Contains?
Typical DC system voltage ratings used in NPPs
circuit
43. Is the vector sum of real and reactive power in an AC circuit and is measured in volt-amperes.
DC system is made up of 3 parts. What are they?
Apparent Power
Retail Substation
Transmission Substation
44. 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)
electrons
Distribution System
ion
45. Analogous to a power plant switchyard but on the load end. Voltage is stepped down to Distribution System voltages.
Potential transformers (PTs)
Transmission Substation
electrode
Simple Circuite Contains?
46. Operate somewhat like check valves such that current only flows in one direction - when the voltage on the input is higher than the output
Apparent Power
current electricity
Diodes
Ohm's Law
47. 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
Generator
Changes that need to be analyzed to determine impact on voltage - cable and breaker ratings - as well as battery capacity
PSB-1
48. Neutral charged particles of an atom
Transmission Substation
atom
reduced voltage
neutrons
49. A material in which charge moves through easily
Generator
Generator off-line
conductor
Retail Substation
50. 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
current electricity
Potential transformers (PTs)
Retail Substation