SUBJECTS
|
BROWSE
|
CAREER CENTER
|
POPULAR
|
JOIN
|
LOGIN
Business Skills
|
Soft Skills
|
Basic Literacy
|
Certifications
About
|
Help
|
Privacy
|
Terms
Search
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. A material that is usually insulated but becomes conductive through the addition of an impurity
Diodes
semiconductor
Normal Operation
Switchgear
2. 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 transformers (CTs)
electricity
Distribution System
Battery
3. Negatively charged particles of an atom
DC system is made up of 3 parts. What are they?
ion
electrons
cathode
4. An electrode where reduction occurs
cathode
electrolyte
Load center breakers
electricity
5. An electrode where free electrons are produced
electricity
anode
battery
Diodes
6. Used in numerous applications to amplify or perform switching operations.
High Voltage Lines
Transients
Transistors
Isolated Phase Bus (IPB)
7. (analogous to flow) predominantly flows on the surface of the conductor.
Generator off-line
Current
Reactive Power
Load center
8. 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
neutrons
Retail Lines
electrode
9. The instantaneous movement from negatively charged atoms to positively charged atoms
Distribution System
orbital
Potential transformers (PTs)
static electricty
10. A material that has no resistance to electrical current - this usually occurs near absolute zero
superconductor
insulator
General Design Criterion 17 (GDC-17)
Ohm's Law
11. 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.
Battery
Reactive Power
Diodes
A motor control center (MCC
12. 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
atom
Transients
Power
13. 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
conductor
Load center breakers
14. Unit's main generator - offsite power via the switchyard - and redundant emergency diesel generators
anode
SR Sources of power
Nuclear energy
Real Power
15. Changes in voltage caused by motor starts or other loads being switched onto an electrical system
electrons
Caution around DC Circuits
Transients
Battery Rooms
16. A device that changes mechanical energy into electricity
electric generator
Isolated Phase Bus (IPB)
Typical DC system voltage ratings used in NPPs
orbital
17. 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
conductor
Nuclear energy
Retail Lines
Circuit Breaker
18. 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
Kirchoff's Current law
Disconnect switches
Apparent Power
SR Sources of power
19. A solid conductor through which a current enters or exits a medium
Distribution System
electrode
current electricity
Power
20. 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
electrolyte
ion
Kirchoff's Voltage Law
21. Is the vector sum of real and reactive power in an AC circuit and is measured in volt-amperes.
Non-segregated Phase Bus
Real Power
Apparent Power
current electricity
22. Main Generator feeds main transformer - aux transformer (to aux loads) and crosstie to train B
electrolyte
charge
Transformer
Normal Operation
23. The flow of electrons (-) through a material
current electricity
Non-segregated Phase Bus
Generator
Distribution System
24. May be used to power various low voltage loads and are typically used for applications that do not require any form of remote control.
current electricity
transformer
Panelboard
Load center breakers
25. Analogous to a power plant switchyard but on the load end. Voltage is stepped down to Distribution System voltages.
Transmission Substation
Transients
SR Sources of power
Load center breakers
26. 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
Diodes
orbital
PSB-1
27. A circuit with a break in its path
open circuit
electrode
Current transformers (CTs)
High Voltage Lines
28. Voltage is stepped down again to serve smaller industrial and commercial customers as well as residential needs.
Transformer (smaller)
Battery
Panelboard
Typical DC system voltage ratings used in NPPs
29. 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.
Current
A motor control center (MCC
Circuit Breaker
Battery Rooms
30. 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
semiconductor
closed circuit
Current transformers (CTs)
31. 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
Potential transformers (PTs)
PSB-1
Battery Rooms
Fault
32. The source voltage is equal to the sum of the voltage drops across the elements of the circuit and the load.
33. 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
electrons
PSB-1
current electricity
Ohm's Law
34. Used for transmission systems which are used for transporting bulk power from large generators to areas with heavy load concentrations such as cities.
reduced voltage
High Voltage Lines
Current transformers (CTs)
Potential transformers (PTs)
35. Atoms that have acquired an electrical charge
DC system is made up of 3 parts. What are they?
General Design Criterion 17 (GDC-17)
ion
Power
36. 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
electrolyte
Switchgear
Real Power
battery
37. One or more cells connected in series
Potential transformers (PTs)
Fault
battery
Generator off-line
38. A fundamental quantity in electricity (+ or -)
Potential transformers (PTs)
electricity
charge
Typical DC system voltage ratings used in NPPs
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.
Isolated Phase Bus (IPB)
DC
open circuit
Molded case circuit breakers (MCCBs)
40. Voltage Source - Conductor - Switch - Load
DC
Distribution System
Simple Circuite Contains?
SR Sources of power
41. A material that dissolves in water producing a solution that conducts electricity
electrolyte
Diodes
Transmission Substation
orbital
42. Total Current entering a junction must equal current leaving a junction
43. 125 and 250 VDC.
Typical DC system voltage ratings used in NPPs
Load center
static electricty
atom
44. Used to optimize power output. Multiply by root 3.
Three Phase Power
orbital
anode
Switchgear
45. The flow of electrons
Generator
Panelboard
Isolated Phase Bus (IPB)
electricity
46. 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.
Ohm's Law
Kirchoff's Current law
closed circuit
Nuclear energy
47. 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
orbital
electricity
Ohm's Law
48. Is measured in watts and represents the power consumed by the resistive elements in an AC circuit
Simple Circuite Contains?
battery
Ohm's Law
Real Power
49. A circuit with a complete path - which allows for charges to move
Power
closed circuit
Molded case circuit breakers (MCCBs)
Simple Circuite Contains?
50. Used to convert mechanical energy to electrical energy coupled to the turbine shaft
Generator
Potential transformers (PTs)
Reactive Power
Changes that need to be analyzed to determine impact on voltage - cable and breaker ratings - as well as battery capacity