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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.
Current transformers (CTs)
Transformer (smaller)
Transformer
Transmission Substation
2. 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
electricity
anode
Retail Lines
Apparent Power
3. Voltage is stepped down again to serve smaller industrial and commercial customers as well as residential needs.
Retail Substation
Transmission Substation
PSB-1
Transformer (smaller)
4. Significant impact on the capability of equipment to perform properly since the torque delivered by a motor is proportional to the voltage squared
Molded case circuit breakers (MCCBs)
Switchgear
reduced voltage
static electricty
5. Changes in voltage caused by motor starts or other loads being switched onto an electrical system
Ohm's Law
PSB-1
Transients
Typical DC system voltage ratings used in NPPs
6. Main Generator feeds main transformer - aux transformer (to aux loads) and crosstie to train B
electrode
insulator
Distribution System
Normal Operation
7. Large battery - a battery charger - and a distribution panel
DC system is made up of 3 parts. What are they?
electric generator
Transformer (smaller)
Switchgear
8. An electrode where reduction occurs
Battery Rooms
Changes that need to be analyzed to determine impact on voltage - cable and breaker ratings - as well as battery capacity
Nuclear energy
cathode
9. Operate somewhat like check valves such that current only flows in one direction - when the voltage on the input is higher than the output
Isolated Phase Bus (IPB)
Transients
Diodes
Non-segregated Phase Bus
10. 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
Apparent Power
Reactive Power
Retail Lines
11. 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
Changes that need to be analyzed to determine impact on voltage - cable and breaker ratings - as well as battery capacity
Kirchoff's Voltage Law
electrolyte
12. 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
Power
Disconnect switches
current electricity
Fault
13. The flow of electrons
Generator
open circuit
electricity
DC
14. Used in numerous applications to amplify or perform switching operations.
High Voltage Lines
Power
atom
Transistors
15. 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
Circuit Breaker
Apparent Power
Transistors
16. The flow of electrons (-) through a material
neutrons
orbital
Diodes
current electricity
17. Is the vector sum of real and reactive power in an AC circuit and is measured in volt-amperes.
anode
neutrons
battery
Apparent Power
18. 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.
SR Sources of power
electrons
Distribution System
Transformer
19. A circuit with a complete path - which allows for charges to move
Switchgear
closed circuit
Changes that need to be analyzed to determine impact on voltage - cable and breaker ratings - as well as battery capacity
Retail Lines
20. Is typically used for medium voltage applications where the 3 phase conductors can be mounted within the same enclosure.
Non-segregated Phase Bus
current electricity
Distribution System
transformer
21. A material that is usually insulated but becomes conductive through the addition of an impurity
static electricty
transformer
semiconductor
DC
22. Atoms that have acquired an electrical charge
ion
insulator
Battery
Reactive Power
23. A material that has no resistance to electrical current - this usually occurs near absolute zero
Load center breakers
superconductor
Typical DC system voltage ratings used in NPPs
closed circuit
24. 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.
semiconductor
Current
Nuclear energy
Caution around DC Circuits
25. Voltage Source - Conductor - Switch - Load
Simple Circuite Contains?
PSB-1
Circuit Breaker
transformer
26. An electrode where free electrons are produced
SR Sources of power
orbital
Load center breakers
anode
27. A material in which charge moves through easily
Simple Circuite Contains?
protons
conductor
electrode
28. A voltage source that does not change polarity such as that delivered from a battery.
DC
electrons
PSB-1
Apparent Power
29. (analogous to flow) predominantly flows on the surface of the conductor.
Circuit Breaker
Current
electrons
battery
30. 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
Power
Transients
Switchgear
closed circuit
31. 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
Load center breakers
Diodes
32. 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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33. Offsite power comes in via sartup transformer and some sites can backfeed power from grid via the main transformer OR even a crosstie
Caution around DC Circuits
Diodes
Generator off-line
reduced voltage
34. Is measured in watts and represents the power consumed by the resistive elements in an AC circuit
Real Power
cathode
closed circuit
Apparent Power
35. 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
Panelboard
General Design Criterion 17 (GDC-17)
Generator
Apparent Power
36. One or more cells connected in series
Current transformers (CTs)
circuit
battery
electrode
37. 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.
Transmission Substation
Nuclear energy
Caution around DC Circuits
Distribution System
38. 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
Normal Operation
insulator
Potential transformers (PTs)
Generator
39. Temperature Controlled
Current transformers (CTs)
electricity
Battery Rooms
Potential transformers (PTs)
40. May be used to power various low voltage loads and are typically used for applications that do not require any form of remote control.
closed circuit
Panelboard
General Design Criterion 17 (GDC-17)
current electricity
41. The product of voltage times current
Power
Current
Swtichyard
Caution around DC Circuits
42. 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
closed circuit
Battery
Typical DC system voltage ratings used in NPPs
Swtichyard
43. V=IR.
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44. A material that dissolves in water producing a solution that conducts electricity
Battery Rooms
charge
electrolyte
Retail Lines
45. 125 and 250 VDC.
Typical DC system voltage ratings used in NPPs
DC system is made up of 3 parts. What are they?
transformer
Panelboard
46. Neutral charged particles of an atom
neutrons
Simple Circuite Contains?
Generator
charge
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
PSB-1
Reactive Power
Generator
electrons
48. Unit's main generator - offsite power via the switchyard - and redundant emergency diesel generators
electric generator
electricity
SR Sources of power
Disconnect switches
49. 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.
conductor
Molded case circuit breakers (MCCBs)
atom
superconductor
50. A solid conductor through which a current enters or exits a medium
DC
electrons
Retail Lines
electrode