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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 dissolves in water producing a solution that conducts electricity
Reactive Power
electrolyte
Circuit Breaker
open circuit
2. A material that has no resistance to electrical current - this usually occurs near absolute zero
General Design Criterion 17 (GDC-17)
superconductor
electricity
closed circuit
3. May be used to power various low voltage loads and are typically used for applications that do not require any form of remote control.
Caution around DC Circuits
Battery
reduced voltage
Panelboard
4. An electrode where free electrons are produced
transformer
Panelboard
A motor control center (MCC
anode
5. (analogous to flow) predominantly flows on the surface of the conductor.
Caution around DC Circuits
Current
Non-segregated Phase Bus
Isolated Phase Bus (IPB)
6. One or more cells connected in series
electrons
charge
battery
electricity
7. A material in which charge moves through easily
atom
Typical DC system voltage ratings used in NPPs
conductor
Load center breakers
8. 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
Diodes
closed circuit
Molded case circuit breakers (MCCBs)
Potential transformers (PTs)
9. 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.
Nuclear energy
Isolated Phase Bus (IPB)
General Design Criterion 17 (GDC-17)
Diodes
10. 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.
cathode
Real Power
A motor control center (MCC
Current transformers (CTs)
11. 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
closed circuit
Panelboard
reduced voltage
Disconnect switches
12. A material through which a charge does not move easily
Transformer (smaller)
Ohm's Law
DC system is made up of 3 parts. What are they?
insulator
13. Atoms that have acquired an electrical charge
ion
electrode
High Voltage Lines
Distribution System
14. Total Current entering a junction must equal current leaving a junction
15. Used to optimize power output. Multiply by root 3.
electric generator
Three Phase Power
Reactive Power
Generator off-line
16. Voltage is stepped down again to serve smaller industrial and commercial customers as well as residential needs.
battery
Retail Substation
neutrons
DC
17. 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.
static electricty
High Voltage Lines
closed circuit
Caution around DC Circuits
18. The flow of electrons
Nuclear energy
Current
electricity
PSB-1
19. 125 and 250 VDC.
electrolyte
Typical DC system voltage ratings used in NPPs
open circuit
Potential transformers (PTs)
20. 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.
electrode
ion
electric generator
Nuclear energy
21. 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.
neutrons
Transistors
Ohm's Law
Distribution System
22. 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
ion
conductor
DC
Retail Lines
23. 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.
electric generator
Transformer
Changes that need to be analyzed to determine impact on voltage - cable and breaker ratings - as well as battery capacity
Generator off-line
24. Temperature Controlled
Battery Rooms
Load center breakers
semiconductor
orbital
25. The source voltage is equal to the sum of the voltage drops across the elements of the circuit and the load.
26. A circuit with a complete path - which allows for charges to move
electric generator
protons
reduced voltage
closed circuit
27. 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
battery
SR Sources of power
General Design Criterion 17 (GDC-17)
Disconnect switches
28. Operate somewhat like check valves such that current only flows in one direction - when the voltage on the input is higher than the output
Distribution System
Diodes
Load center breakers
Battery
29. A fundamental quantity in electricity (+ or -)
charge
closed circuit
electrode
neutrons
30. Neutral charged particles of an atom
neutrons
Non-segregated Phase Bus
cathode
protons
31. Building blocks of elements consisting of a positively charged nucleus surrounded by electrons
Disconnect switches
atom
DC system is made up of 3 parts. What are they?
electrolyte
32. Is the vector sum of real and reactive power in an AC circuit and is measured in volt-amperes.
Simple Circuite Contains?
Apparent Power
Transmission Substation
Molded case circuit breakers (MCCBs)
33. 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 ****
Kirchoff's Voltage Law
DC system is made up of 3 parts. What are they?
Fault
Transistors
34. Are used at low voltages rather than medium voltage and they contain CTs and protective devices as part of the assembly.
protons
Load center breakers
High Voltage Lines
Power
35. A voltage source that does not change polarity such as that delivered from a battery.
anode
DC
SR Sources of power
electrolyte
36. Main Generator feeds main transformer - aux transformer (to aux loads) and crosstie to train B
static electricty
Normal Operation
charge
Transformer (smaller)
37. Negatively charged particles of an atom
electrons
Transients
closed circuit
Generator off-line
38. Offsite power comes in via sartup transformer and some sites can backfeed power from grid via the main transformer OR even a crosstie
circuit
Generator off-line
orbital
ion
39. Changes in voltage caused by motor starts or other loads being switched onto an electrical system
Generator off-line
Battery
cathode
Transients
40. 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.
ion
transformer
electric generator
Circuit Breaker
41. 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
DC system is made up of 3 parts. What are they?
conductor
Current transformers (CTs)
Distribution System
42. A circuit with a break in its path
Ohm's Law
circuit
open circuit
Three Phase Power
43. 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
Generator off-line
Transistors
High Voltage Lines
Reactive Power
44. Positively charged particles of an atom
orbital
protons
Load center
DC
45. The instantaneous movement from negatively charged atoms to positively charged atoms
Transformer
static electricty
Current transformers (CTs)
electrons
46. Large battery - a battery charger - and a distribution panel
Caution around DC Circuits
Molded case circuit breakers (MCCBs)
Battery
DC system is made up of 3 parts. What are they?
47. A material that is usually insulated but becomes conductive through the addition of an impurity
Retail Lines
PSB-1
Apparent Power
semiconductor
48. 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
Nuclear energy
Apparent Power
General Design Criterion 17 (GDC-17)
PSB-1
49. 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.
battery
Load center
Transistors
SR Sources of power
50. An energy storage device that converts chemical energy to electricity when power is needed.
electrolyte
Load center breakers
Current
Battery