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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. Atoms that have acquired an electrical charge
battery
Power
ion
transformer
2. Voltage is stepped down again to serve smaller industrial and commercial customers as well as residential needs.
electrolyte
Swtichyard
Typical DC system voltage ratings used in NPPs
Transformer (smaller)
3. Significant impact on the capability of equipment to perform properly since the torque delivered by a motor is proportional to the voltage squared
circuit
Transformer
reduced voltage
Transformer (smaller)
4. A voltage source that does not change polarity such as that delivered from a battery.
Current transformers (CTs)
electrolyte
Simple Circuite Contains?
DC
5. Offsite power comes in via sartup transformer and some sites can backfeed power from grid via the main transformer OR even a crosstie
DC
Generator off-line
Battery
cathode
6. Temperature Controlled
Battery Rooms
current electricity
ion
reduced voltage
7. Voltage is stepped down again to serve smaller industrial and commercial customers as well as residential needs.
Retail Substation
Apparent Power
circuit
Kirchoff's Current law
8. Changes the voltage of electricity so that it can be transferred over long distances
transformer
DC system is made up of 3 parts. What are they?
Kirchoff's Voltage Law
Transmission Substation
9. A solid conductor through which a current enters or exits a medium
Generator off-line
electrode
current electricity
Panelboard
10. Positively charged particles of an atom
Circuit Breaker
circuit
protons
atom
11. Building blocks of elements consisting of a positively charged nucleus surrounded by electrons
insulator
closed circuit
atom
protons
12. Neutral charged particles of an atom
neutrons
Ohm's Law
Nuclear energy
Apparent Power
13. 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
Potential transformers (PTs)
Battery Rooms
Diodes
charge
14. A fundamental quantity in electricity (+ or -)
Distribution System
protons
static electricty
charge
15. Is typically used for medium voltage applications where the 3 phase conductors can be mounted within the same enclosure.
Transistors
Non-segregated Phase Bus
semiconductor
Normal Operation
16. The path of an electron in an atom or molecule
Generator off-line
Retail Lines
Isolated Phase Bus (IPB)
orbital
17. Used for transmission systems which are used for transporting bulk power from large generators to areas with heavy load concentrations such as cities.
Isolated Phase Bus (IPB)
charge
High Voltage Lines
Diodes
18. Total Current entering a junction must equal current leaving a junction
19. Used to optimize power output. Multiply by root 3.
Normal Operation
A motor control center (MCC
Three Phase Power
Disconnect switches
20. Analogous to a power plant switchyard but on the load end. Voltage is stepped down to Distribution System voltages.
Fault
Transmission Substation
Caution around DC Circuits
SR Sources of power
21. Changes in voltage caused by motor starts or other loads being switched onto an electrical system
Current transformers (CTs)
current electricity
Load center
Transients
22. 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
Non-segregated Phase Bus
Swtichyard
Generator off-line
PSB-1
23. The source voltage is equal to the sum of the voltage drops across the elements of the circuit and the load.
24. Any path that electrons flow through
Ohm's Law
reduced voltage
circuit
Retail Lines
25. 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.
Generator off-line
Load center
Isolated Phase Bus (IPB)
open circuit
26. The flow of electrons
superconductor
Load center breakers
High Voltage Lines
electricity
27. 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.
Current transformers (CTs)
Circuit Breaker
Reactive Power
Isolated Phase Bus (IPB)
28. A material that has no resistance to electrical current - this usually occurs near absolute zero
superconductor
Typical DC system voltage ratings used in NPPs
Retail Substation
Nuclear energy
29. One or more cells connected in series
Molded case circuit breakers (MCCBs)
Generator
battery
Retail Substation
30. Are used at low voltages rather than medium voltage and they contain CTs and protective devices as part of the assembly.
Load center breakers
Disconnect switches
Kirchoff's Current law
General Design Criterion 17 (GDC-17)
31. 125 and 250 VDC.
transformer
Typical DC system voltage ratings used in NPPs
Isolated Phase Bus (IPB)
Load center breakers
32. 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
Swtichyard
Molded case circuit breakers (MCCBs)
Generator off-line
Reactive Power
33. 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
Apparent Power
Load center
Transformer (smaller)
PSB-1
34. 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.
Molded case circuit breakers (MCCBs)
Caution around DC Circuits
electrons
closed circuit
35. 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)
semiconductor
charge
Changes that need to be analyzed to determine impact on voltage - cable and breaker ratings - as well as battery capacity
36. Negatively charged particles of an atom
Panelboard
electrons
battery
Transients
37. A device that changes mechanical energy into electricity
electric generator
anode
protons
Generator
38. Used to convert mechanical energy to electrical energy coupled to the turbine shaft
electrode
Distribution System
current electricity
Generator
39. Is the vector sum of real and reactive power in an AC circuit and is measured in volt-amperes.
Ohm's Law
Power
Apparent Power
anode
40. Voltage Source - Conductor - Switch - Load
Transmission Substation
Kirchoff's Voltage Law
Simple Circuite Contains?
Real Power
41. An energy storage device that converts chemical energy to electricity when power is needed.
Transformer
Battery
circuit
Fault
42. 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
Non-segregated Phase Bus
Ohm's Law
Transients
43. V=IR.
44. Main Generator feeds main transformer - aux transformer (to aux loads) and crosstie to train B
Normal Operation
Diodes
Transistors
Fault
45. 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
PSB-1
Potential transformers (PTs)
Simple Circuite Contains?
46. 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.
Battery
Current
Transformer
Ohm's Law
47. The flow of electrons (-) through a material
Non-segregated Phase Bus
Transformer
current electricity
Molded case circuit breakers (MCCBs)
48. 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.
Three Phase Power
charge
Nuclear energy
General Design Criterion 17 (GDC-17)
49. 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.
closed circuit
Circuit Breaker
Simple Circuite Contains?
circuit
50. 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 -
High Voltage Lines
Switchgear
Caution around DC Circuits
Changes that need to be analyzed to determine impact on voltage - cable and breaker ratings - as well as battery capacity