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