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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. Building blocks of elements consisting of a positively charged nucleus surrounded by electrons
Disconnect switches
Kirchoff's Current law
Swtichyard
atom
2. 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 breakers
Apparent Power
Typical DC system voltage ratings used in NPPs
Switchgear
3. One or more cells connected in series
Isolated Phase Bus (IPB)
Normal Operation
battery
electricity
4. May be used to power various low voltage loads and are typically used for applications that do not require any form of remote control.
anode
PSB-1
Panelboard
A motor control center (MCC
5. A material that dissolves in water producing a solution that conducts electricity
Load center breakers
Kirchoff's Current law
Load center
electrolyte
6. 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 -
Isolated Phase Bus (IPB)
transformer
Changes that need to be analyzed to determine impact on voltage - cable and breaker ratings - as well as battery capacity
Retail Lines
7. Analogous to a power plant switchyard but on the load end. Voltage is stepped down to Distribution System voltages.
Generator
Transmission Substation
electrode
ion
8. 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 ****
orbital
Fault
Load center
Battery
9. A circuit with a complete path - which allows for charges to move
closed circuit
ion
Battery
Typical DC system voltage ratings used in NPPs
10. A material that has no resistance to electrical current - this usually occurs near absolute zero
superconductor
electrons
ion
electricity
11. The product of voltage times current
DC
Power
Changes that need to be analyzed to determine impact on voltage - cable and breaker ratings - as well as battery capacity
Generator off-line
12. Changes the voltage of electricity so that it can be transferred over long distances
Normal Operation
Kirchoff's Current law
transformer
Distribution System
13. 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.
Generator
Battery Rooms
Caution around DC Circuits
Three Phase Power
14. A circuit with a break in its path
anode
Circuit Breaker
open circuit
Swtichyard
15. 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
Power
ion
Swtichyard
Retail Lines
16. Large battery - a battery charger - and a distribution panel
DC system is made up of 3 parts. What are they?
Potential transformers (PTs)
Transmission Substation
atom
17. The path of an electron in an atom or molecule
Three Phase Power
orbital
Panelboard
open circuit
18. Any path that electrons flow through
circuit
insulator
Kirchoff's Current law
static electricty
19. Unit's main generator - offsite power via the switchyard - and redundant emergency diesel generators
SR Sources of power
High Voltage Lines
atom
closed circuit
20. Atoms that have acquired an electrical charge
anode
Typical DC system voltage ratings used in NPPs
PSB-1
ion
21. Total Current entering a junction must equal current leaving a junction
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on line
183
22. An electrode where free electrons are produced
battery
Current transformers (CTs)
orbital
anode
23. 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
Normal Operation
circuit
Isolated Phase Bus (IPB)
24. 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
Reactive Power
Battery
Simple Circuite Contains?
Nuclear energy
25. Neutral charged particles of an atom
electric generator
neutrons
Retail Lines
Kirchoff's Voltage Law
26. A material that is usually insulated but becomes conductive through the addition of an impurity
charge
semiconductor
SR Sources of power
protons
27. An electrode where reduction occurs
superconductor
Distribution System
A motor control center (MCC
cathode
28. An energy storage device that converts chemical energy to electricity when power is needed.
Battery
Changes that need to be analyzed to determine impact on voltage - cable and breaker ratings - as well as battery capacity
DC
orbital
29. 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
Generator off-line
Switchgear
30. 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
Generator
Load center
Current
Swtichyard
31. 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.
Fault
Transients
A motor control center (MCC
DC system is made up of 3 parts. What are they?
32. Operate somewhat like check valves such that current only flows in one direction - when the voltage on the input is higher than the output
conductor
Transformer
Diodes
Changes that need to be analyzed to determine impact on voltage - cable and breaker ratings - as well as battery capacity
33. Voltage is stepped down again to serve smaller industrial and commercial customers as well as residential needs.
SR Sources of power
Switchgear
Transformer (smaller)
Load center breakers
34. Changes in voltage caused by motor starts or other loads being switched onto an electrical system
Transients
Power
Reactive Power
static electricty
35. Used to convert mechanical energy to electrical energy coupled to the turbine shaft
superconductor
SR Sources of power
electricity
Generator
36. Voltage Source - Conductor - Switch - Load
Simple Circuite Contains?
reduced voltage
Typical DC system voltage ratings used in NPPs
Panelboard
37. Is the vector sum of real and reactive power in an AC circuit and is measured in volt-amperes.
Apparent Power
Potential transformers (PTs)
General Design Criterion 17 (GDC-17)
A motor control center (MCC
38. A voltage source that does not change polarity such as that delivered from a battery.
Load center breakers
electrolyte
DC
SR Sources of power
39. 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.
Changes that need to be analyzed to determine impact on voltage - cable and breaker ratings - as well as battery capacity
Molded case circuit breakers (MCCBs)
Generator off-line
Three Phase Power
40. (analogous to flow) predominantly flows on the surface of the conductor.
Caution around DC Circuits
Current
electrons
Transients
41. 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.
Disconnect switches
static electricty
Switchgear
Nuclear energy
42. 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.
Disconnect switches
Generator off-line
Kirchoff's Voltage Law
Distribution System
43. A material in which charge moves through easily
closed circuit
superconductor
reduced voltage
conductor
44. Voltage is stepped down again to serve smaller industrial and commercial customers as well as residential needs.
orbital
Retail Substation
Normal Operation
conductor
45. Used in numerous applications to amplify or perform switching operations.
Changes that need to be analyzed to determine impact on voltage - cable and breaker ratings - as well as battery capacity
Transistors
Switchgear
electrolyte
46. 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
High Voltage Lines
Three Phase Power
Transformer
47. 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
cathode
General Design Criterion 17 (GDC-17)
Non-segregated Phase Bus
Typical DC system voltage ratings used in NPPs
48. Main Generator feeds main transformer - aux transformer (to aux loads) and crosstie to train B
Normal Operation
A motor control center (MCC
Generator off-line
Load center
49. The instantaneous movement from negatively charged atoms to positively charged atoms
static electricty
Circuit Breaker
electric generator
orbital
50. A material through which a charge does not move easily
electrolyte
DC system is made up of 3 parts. What are they?
insulator
Retail Lines