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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. Is measured in watts and represents the power consumed by the resistive elements in an AC circuit
transformer
Real Power
Kirchoff's Current law
Normal Operation
2. Voltage is stepped down again to serve smaller industrial and commercial customers as well as residential needs.
Transformer (smaller)
neutrons
Transmission Substation
Kirchoff's Current law
3. 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
Simple Circuite Contains?
PSB-1
Load center breakers
4. Is a configuration used for very high current bus assemblies typically operating at generator voltage levels of 20 to 24 kV where each conductor is mounted within its own enclosure.
A motor control center (MCC
Switchgear
orbital
Isolated Phase Bus (IPB)
5. An electrode where reduction occurs
anode
cathode
Ohm's Law
Generator
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.
semiconductor
Apparent Power
Distribution System
A motor control center (MCC
7. An electrode where free electrons are produced
anode
High Voltage Lines
electricity
orbital
8. A material that dissolves in water producing a solution that conducts electricity
Nuclear energy
Battery
electrolyte
Transformer (smaller)
9. A voltage source that does not change polarity such as that delivered from a battery.
insulator
DC
Transistors
ion
10. 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.
Load center breakers
Kirchoff's Current law
High Voltage Lines
Transformer
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
ion
Panelboard
Current
12. 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.
electrons
General Design Criterion 17 (GDC-17)
cathode
Nuclear energy
13. The product of voltage times current
Power
Kirchoff's Voltage Law
General Design Criterion 17 (GDC-17)
Reactive Power
14. (analogous to flow) predominantly flows on the surface of the conductor.
General Design Criterion 17 (GDC-17)
Transistors
electrons
Current
15. Voltage Source - Conductor - Switch - Load
Swtichyard
Simple Circuite Contains?
SR Sources of power
Generator
16. Unit's main generator - offsite power via the switchyard - and redundant emergency diesel generators
High Voltage Lines
insulator
SR Sources of power
static electricty
17. A material that has no resistance to electrical current - this usually occurs near absolute zero
Switchgear
Load center
static electricty
superconductor
18. Used to optimize power output. Multiply by root 3.
Three Phase Power
circuit
Apparent Power
current electricity
19. Changes in voltage caused by motor starts or other loads being switched onto an electrical system
PSB-1
Switchgear
Transients
DC system is made up of 3 parts. What are they?
20. 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
Molded case circuit breakers (MCCBs)
General Design Criterion 17 (GDC-17)
electrode
21. 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
Caution around DC Circuits
Swtichyard
ion
current electricity
22. Used in numerous applications to amplify or perform switching operations.
Transistors
Circuit Breaker
electricity
current electricity
23. Changes the voltage of electricity so that it can be transferred over long distances
transformer
High Voltage Lines
protons
closed circuit
24. A fundamental quantity in electricity (+ or -)
transformer
charge
Current transformers (CTs)
Circuit Breaker
25. One or more cells connected in series
battery
Disconnect switches
anode
Simple Circuite Contains?
26. A material in which charge moves through easily
Transmission Substation
reduced voltage
conductor
Transformer (smaller)
27. Significant impact on the capability of equipment to perform properly since the torque delivered by a motor is proportional to the voltage squared
PSB-1
reduced voltage
charge
Retail Substation
28. Temperature Controlled
Battery Rooms
Transistors
closed circuit
electricity
29. 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
closed circuit
Non-segregated Phase Bus
Potential transformers (PTs)
Battery Rooms
30. Atoms that have acquired an electrical charge
ion
static electricty
Apparent Power
Panelboard
31. A circuit with a break in its path
open circuit
orbital
charge
circuit
32. A device that changes mechanical energy into electricity
Battery
ion
electric generator
Transients
33. Building blocks of elements consisting of a positively charged nucleus surrounded by electrons
Power
atom
protons
Three Phase Power
34. A circuit with a complete path - which allows for charges to move
charge
closed circuit
electrolyte
PSB-1
35. 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 -
static electricty
Fault
Changes that need to be analyzed to determine impact on voltage - cable and breaker ratings - as well as battery capacity
SR Sources of power
36. An energy storage device that converts chemical energy to electricity when power is needed.
Typical DC system voltage ratings used in NPPs
Battery
Load center breakers
protons
37. Main Generator feeds main transformer - aux transformer (to aux loads) and crosstie to train B
Normal Operation
Generator
Reactive Power
ion
38. Any path that electrons flow through
Retail Substation
circuit
atom
electrode
39. Used to convert mechanical energy to electrical energy coupled to the turbine shaft
Diodes
Generator
Battery Rooms
electrode
40. 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.
semiconductor
atom
Kirchoff's Voltage Law
A motor control center (MCC
41. The instantaneous movement from negatively charged atoms to positively charged atoms
transformer
Battery
Circuit Breaker
static electricty
42. Is typically used for medium voltage applications where the 3 phase conductors can be mounted within the same enclosure.
electric generator
Non-segregated Phase Bus
transformer
Changes that need to be analyzed to determine impact on voltage - cable and breaker ratings - as well as battery capacity
43. 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.
electrolyte
Transistors
electric generator
Caution around DC Circuits
44. 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
Disconnect switches
Generator off-line
General Design Criterion 17 (GDC-17)
Generator
45. The source voltage is equal to the sum of the voltage drops across the elements of the circuit and the load.
46. Positively charged particles of an atom
PSB-1
Transformer
protons
DC
47. 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 ****
Fault
Current
reduced voltage
Simple Circuite Contains?
48. 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
Changes that need to be analyzed to determine impact on voltage - cable and breaker ratings - as well as battery capacity
charge
Current transformers (CTs)
atom
49. The path of an electron in an atom or molecule
orbital
protons
Normal Operation
conductor
50. 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
General Design Criterion 17 (GDC-17)
Changes that need to be analyzed to determine impact on voltage - cable and breaker ratings - as well as battery capacity
Generator
Ohm's Law