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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. Used to optimize power output. Multiply by root 3.
Three Phase Power
Panelboard
superconductor
Typical DC system voltage ratings used in NPPs
2. The flow of electrons (-) through a material
Reactive Power
current electricity
orbital
Ohm's Law
3. 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
electricity
PSB-1
Normal Operation
circuit
4. A solid conductor through which a current enters or exits a medium
electrode
Power
Molded case circuit breakers (MCCBs)
General Design Criterion 17 (GDC-17)
5. Main Generator feeds main transformer - aux transformer (to aux loads) and crosstie to train B
Normal Operation
Circuit Breaker
Kirchoff's Voltage Law
battery
6. The product of voltage times current
charge
cathode
Nuclear energy
Power
7. 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
Transistors
Battery Rooms
DC
Swtichyard
8. 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 -
Apparent Power
reduced voltage
cathode
Changes that need to be analyzed to determine impact on voltage - cable and breaker ratings - as well as battery capacity
9. Used to convert mechanical energy to electrical energy coupled to the turbine shaft
Generator
DC
Battery
superconductor
10. May be used to power various low voltage loads and are typically used for applications that do not require any form of remote control.
electrode
Panelboard
Kirchoff's Voltage Law
protons
11. Voltage is stepped down again to serve smaller industrial and commercial customers as well as residential needs.
Transformer (smaller)
electrons
Three Phase Power
orbital
12. 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
Load center
Simple Circuite Contains?
Current transformers (CTs)
13. A material in which charge moves through easily
insulator
conductor
Generator off-line
Generator
14. A voltage source that does not change polarity such as that delivered from a battery.
DC
current electricity
Load center breakers
electrons
15. A fundamental quantity in electricity (+ or -)
Transformer
battery
A motor control center (MCC
charge
16. A material through which a charge does not move easily
Nuclear energy
Three Phase Power
electricity
insulator
17. Operate somewhat like check valves such that current only flows in one direction - when the voltage on the input is higher than the output
charge
Transformer
Current
Diodes
18. Voltage Source - Conductor - Switch - Load
PSB-1
Kirchoff's Current law
Simple Circuite Contains?
General Design Criterion 17 (GDC-17)
19. Atoms that have acquired an electrical charge
Retail Substation
closed circuit
Transmission Substation
ion
20. 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
Swtichyard
electricity
Transients
Retail Lines
21. 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.
Load center breakers
Molded case circuit breakers (MCCBs)
electrode
Three Phase Power
22. Negatively charged particles of an atom
electrons
semiconductor
Isolated Phase Bus (IPB)
neutrons
23. 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.
current electricity
PSB-1
Load center
Caution around DC Circuits
24. Significant impact on the capability of equipment to perform properly since the torque delivered by a motor is proportional to the voltage squared
Generator off-line
DC system is made up of 3 parts. What are they?
insulator
reduced voltage
25. Positively charged particles of an atom
Normal Operation
Isolated Phase Bus (IPB)
Power
protons
26. 125 and 250 VDC.
Typical DC system voltage ratings used in NPPs
static electricty
Real Power
Switchgear
27. 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
electrolyte
Switchgear
Kirchoff's Current law
Molded case circuit breakers (MCCBs)
28. 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
Generator off-line
General Design Criterion 17 (GDC-17)
DC
29. Used in numerous applications to amplify or perform switching operations.
Transistors
cathode
Normal Operation
Caution around DC Circuits
30. Changes in voltage caused by motor starts or other loads being switched onto an electrical system
electricity
Transformer (smaller)
Transients
Changes that need to be analyzed to determine impact on voltage - cable and breaker ratings - as well as battery capacity
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
Reactive Power
superconductor
electrode
32. One or more cells connected in series
Kirchoff's Voltage Law
Nuclear energy
Disconnect switches
battery
33. A circuit with a complete path - which allows for charges to move
Real Power
closed circuit
Transformer (smaller)
Retail Substation
34. Is typically used for medium voltage applications where the 3 phase conductors can be mounted within the same enclosure.
DC
reduced voltage
closed circuit
Non-segregated Phase Bus
35. 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
charge
Potential transformers (PTs)
Transients
insulator
36. Any path that electrons flow through
closed circuit
electrode
circuit
electrolyte
37. The source voltage is equal to the sum of the voltage drops across the elements of the circuit and the load.
38. The flow of electrons
electricity
Retail Substation
protons
Circuit Breaker
39. 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
orbital
Disconnect switches
insulator
40. Building blocks of elements consisting of a positively charged nucleus surrounded by electrons
insulator
cathode
conductor
atom
41. 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.
DC
Isolated Phase Bus (IPB)
Transformer (smaller)
reduced voltage
42. 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.
A motor control center (MCC
battery
Retail Lines
static electricty
43. Used for transmission systems which are used for transporting bulk power from large generators to areas with heavy load concentrations such as cities.
atom
Non-segregated Phase Bus
High Voltage Lines
ion
44. A material that dissolves in water producing a solution that conducts electricity
current electricity
Swtichyard
Disconnect switches
electrolyte
45. Neutral charged particles of an atom
General Design Criterion 17 (GDC-17)
transformer
neutrons
charge
46. Changes the voltage of electricity so that it can be transferred over long distances
current electricity
transformer
Disconnect switches
closed circuit
47. A device that changes mechanical energy into electricity
Diodes
electric generator
Load center breakers
charge
48. Offsite power comes in via sartup transformer and some sites can backfeed power from grid via the main transformer OR even a crosstie
transformer
Current
Circuit Breaker
Generator off-line
49. Is the vector sum of real and reactive power in an AC circuit and is measured in volt-amperes.
Apparent Power
Retail Substation
Generator off-line
Swtichyard
50. An electrode where free electrons are produced
anode
Disconnect switches
open circuit
Current