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