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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. 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
Distribution System
Potential transformers (PTs)
static electricty
Real Power
2. 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
Retail Lines
Retail Substation
Swtichyard
3. Unit's main generator - offsite power via the switchyard - and redundant emergency diesel generators
Distribution System
Real Power
SR Sources of power
insulator
4. 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
transformer
SR Sources of power
Potential transformers (PTs)
5. (analogous to flow) predominantly flows on the surface of the conductor.
electrode
Current
Changes that need to be analyzed to determine impact on voltage - cable and breaker ratings - as well as battery capacity
Load center breakers
6. 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
protons
Distribution System
Fault
Switchgear
7. Used in numerous applications to amplify or perform switching operations.
atom
Load center breakers
Transistors
Typical DC system voltage ratings used in NPPs
8. A solid conductor through which a current enters or exits a medium
cathode
A motor control center (MCC
electrode
Load center
9. A voltage source that does not change polarity such as that delivered from a battery.
Non-segregated Phase Bus
Current transformers (CTs)
Molded case circuit breakers (MCCBs)
DC
10. May be used to power various low voltage loads and are typically used for applications that do not require any form of remote control.
transformer
Panelboard
PSB-1
Disconnect switches
11. Is measured in watts and represents the power consumed by the resistive elements in an AC circuit
Real Power
Apparent Power
Fault
electric generator
12. 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
Kirchoff's Voltage Law
Swtichyard
Disconnect switches
Three Phase Power
13. Used for transmission systems which are used for transporting bulk power from large generators to areas with heavy load concentrations such as cities.
Kirchoff's Voltage Law
Normal Operation
DC system is made up of 3 parts. What are they?
High Voltage Lines
14. The flow of electrons (-) through a material
anode
Swtichyard
open circuit
current electricity
15. 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
Transformer (smaller)
Reactive Power
ion
Power
16. Used to optimize power output. Multiply by root 3.
atom
Kirchoff's Current law
Transmission Substation
Three Phase Power
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
Retail Lines
Current transformers (CTs)
Panelboard
General Design Criterion 17 (GDC-17)
18. Main Generator feeds main transformer - aux transformer (to aux loads) and crosstie to train B
Normal Operation
battery
transformer
Kirchoff's Voltage Law
19. Operate somewhat like check valves such that current only flows in one direction - when the voltage on the input is higher than the output
Changes that need to be analyzed to determine impact on voltage - cable and breaker ratings - as well as battery capacity
Generator off-line
Diodes
protons
20. A circuit with a break in its path
atom
Current transformers (CTs)
Isolated Phase Bus (IPB)
open circuit
21. V=IR.
22. 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.
Swtichyard
Kirchoff's Voltage Law
Load center
electrode
23. 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 -
Battery Rooms
Changes that need to be analyzed to determine impact on voltage - cable and breaker ratings - as well as battery capacity
General Design Criterion 17 (GDC-17)
Generator
24. The product of voltage times current
Power
Load center breakers
ion
PSB-1
25. The flow of electrons
Generator off-line
Generator
High Voltage Lines
electricity
26. 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
reduced voltage
PSB-1
transformer
Transmission Substation
27. A material through which a charge does not move easily
insulator
Generator
reduced voltage
Kirchoff's Current law
28. A material in which charge moves through easily
conductor
Non-segregated Phase Bus
Load center breakers
static electricty
29. Positively charged particles of an atom
electricity
protons
Normal Operation
insulator
30. 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)
insulator
Power
neutrons
31. Is typically used for medium voltage applications where the 3 phase conductors can be mounted within the same enclosure.
electrolyte
Load center breakers
Non-segregated Phase Bus
Circuit Breaker
32. 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.
A motor control center (MCC
Potential transformers (PTs)
Generator off-line
Caution around DC Circuits
33. 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.
circuit
Transients
Transistors
Caution around DC Circuits
34. Voltage is stepped down again to serve smaller industrial and commercial customers as well as residential needs.
orbital
Distribution System
Transformer (smaller)
electricity
35. The path of an electron in an atom or molecule
Battery Rooms
orbital
Isolated Phase Bus (IPB)
Simple Circuite Contains?
36. Analogous to a power plant switchyard but on the load end. Voltage is stepped down to Distribution System voltages.
Current transformers (CTs)
Transmission Substation
open circuit
Swtichyard
37. Changes in voltage caused by motor starts or other loads being switched onto an electrical system
Transients
Distribution System
Panelboard
Kirchoff's Current law
38. 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.
Typical DC system voltage ratings used in NPPs
Three Phase Power
Nuclear energy
Switchgear
39. 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.
Transformer
anode
electrode
A motor control center (MCC
40. Voltage Source - Conductor - Switch - Load
Reactive Power
cathode
Simple Circuite Contains?
Battery Rooms
41. 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.
Nuclear energy
Molded case circuit breakers (MCCBs)
Panelboard
battery
42. A material that is usually insulated but becomes conductive through the addition of an impurity
Ohm's Law
Molded case circuit breakers (MCCBs)
Generator
semiconductor
43. The instantaneous movement from negatively charged atoms to positively charged atoms
Ohm's Law
static electricty
Battery
open circuit
44. Is the vector sum of real and reactive power in an AC circuit and is measured in volt-amperes.
Diodes
Apparent Power
closed circuit
cathode
45. 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
PSB-1
ion
charge
46. 125 and 250 VDC.
Typical DC system voltage ratings used in NPPs
Non-segregated Phase Bus
Distribution System
DC
47. Are used at low voltages rather than medium voltage and they contain CTs and protective devices as part of the assembly.
Load center breakers
Transformer
Retail Substation
electrolyte
48. Voltage is stepped down again to serve smaller industrial and commercial customers as well as residential needs.
DC system is made up of 3 parts. What are they?
Retail Substation
A motor control center (MCC
cathode
49. An electrode where free electrons are produced
electricity
charge
transformer
anode
50. Atoms that have acquired an electrical charge
ion
Battery Rooms
A motor control center (MCC
electrons