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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. Negatively charged particles of an atom
electrons
Three Phase Power
charge
circuit
2. Used to optimize power output. Multiply by root 3.
conductor
Isolated Phase Bus (IPB)
Three Phase Power
closed circuit
3. Used in numerous applications to amplify or perform switching operations.
Transistors
SR Sources of power
Potential transformers (PTs)
Retail Substation
4. A material that is usually insulated but becomes conductive through the addition of an impurity
Apparent Power
static electricty
PSB-1
semiconductor
5. One or more cells connected in series
Battery Rooms
Non-segregated Phase Bus
Swtichyard
battery
6. A voltage source that does not change polarity such as that delivered from a battery.
General Design Criterion 17 (GDC-17)
DC
electrode
electricity
7. 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.
Retail Lines
Circuit Breaker
Transmission Substation
Typical DC system voltage ratings used in NPPs
8. Operate somewhat like check valves such that current only flows in one direction - when the voltage on the input is higher than the output
neutrons
cathode
Diodes
Reactive Power
9. Significant impact on the capability of equipment to perform properly since the torque delivered by a motor is proportional to the voltage squared
reduced voltage
Current
conductor
Transients
10. Building blocks of elements consisting of a positively charged nucleus surrounded by electrons
Simple Circuite Contains?
orbital
atom
Normal Operation
11. V=IR.
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12. Changes the voltage of electricity so that it can be transferred over long distances
static electricty
transformer
Three Phase Power
current electricity
13. A fundamental quantity in electricity (+ or -)
electric generator
anode
Real Power
charge
14. Are used at low voltages rather than medium voltage and they contain CTs and protective devices as part of the assembly.
Diodes
Potential transformers (PTs)
Load center breakers
atom
15. 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
electric generator
Switchgear
static electricty
16. Total Current entering a junction must equal current leaving a junction
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17. 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.
current electricity
neutrons
Caution around DC Circuits
A motor control center (MCC
18. A circuit with a break in its path
Ohm's Law
open circuit
Generator
Switchgear
19. The flow of electrons
electricity
current electricity
Transformer (smaller)
reduced voltage
20. 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.
PSB-1
Potential transformers (PTs)
Molded case circuit breakers (MCCBs)
Kirchoff's Voltage Law
21. 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 ****
Caution around DC Circuits
DC system is made up of 3 parts. What are they?
superconductor
Fault
22. Used to convert mechanical energy to electrical energy coupled to the turbine shaft
Battery Rooms
Generator
superconductor
Real Power
23. Unit's main generator - offsite power via the switchyard - and redundant emergency diesel generators
PSB-1
Transformer (smaller)
battery
SR Sources of power
24. 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
orbital
Transformer
electrode
25. Voltage is stepped down again to serve smaller industrial and commercial customers as well as residential needs.
conductor
Changes that need to be analyzed to determine impact on voltage - cable and breaker ratings - as well as battery capacity
Load center
Retail Substation
26. 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
Typical DC system voltage ratings used in NPPs
Reactive Power
Distribution System
Changes that need to be analyzed to determine impact on voltage - cable and breaker ratings - as well as battery capacity
27. A circuit with a complete path - which allows for charges to move
Ohm's Law
closed circuit
cathode
anode
28. An electrode where reduction occurs
cathode
Changes that need to be analyzed to determine impact on voltage - cable and breaker ratings - as well as battery capacity
Panelboard
Power
29. Temperature Controlled
Power
Normal Operation
Battery Rooms
DC system is made up of 3 parts. What are they?
30. Analogous to a power plant switchyard but on the load end. Voltage is stepped down to Distribution System voltages.
Real Power
Retail Substation
Swtichyard
Transmission Substation
31. Atoms that have acquired an electrical charge
Kirchoff's Voltage Law
cathode
electrons
ion
32. Is typically used for medium voltage applications where the 3 phase conductors can be mounted within the same enclosure.
Transformer
Non-segregated Phase Bus
atom
Swtichyard
33. An energy storage device that converts chemical energy to electricity when power is needed.
Battery
Transients
Panelboard
Circuit Breaker
34. A material through which a charge does not move easily
ion
conductor
circuit
insulator
35. 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
orbital
circuit
Switchgear
Battery Rooms
36. 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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37. A device that changes mechanical energy into electricity
Transients
Kirchoff's Voltage Law
neutrons
electric generator
38. 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.
Load center
Diodes
Kirchoff's Current law
Generator off-line
39. 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.
Transients
Distribution System
battery
Simple Circuite Contains?
40. 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
Normal Operation
semiconductor
PSB-1
Real Power
41. 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 -
insulator
Changes that need to be analyzed to determine impact on voltage - cable and breaker ratings - as well as battery capacity
Isolated Phase Bus (IPB)
DC
42. A material that dissolves in water producing a solution that conducts electricity
Retail Lines
electrolyte
DC system is made up of 3 parts. What are they?
Circuit Breaker
43. The flow of electrons (-) through a material
current electricity
Potential transformers (PTs)
insulator
electrons
44. Voltage Source - Conductor - Switch - Load
Simple Circuite Contains?
Isolated Phase Bus (IPB)
SR Sources of power
DC system is made up of 3 parts. What are they?
45. 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.
A motor control center (MCC
High Voltage Lines
Nuclear energy
Molded case circuit breakers (MCCBs)
46. A material in which charge moves through easily
DC
Non-segregated Phase Bus
Disconnect switches
conductor
47. Main Generator feeds main transformer - aux transformer (to aux loads) and crosstie to train B
High Voltage Lines
Real Power
Non-segregated Phase Bus
Normal Operation
48. 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.
Caution around DC Circuits
Changes that need to be analyzed to determine impact on voltage - cable and breaker ratings - as well as battery capacity
Transformer
Real Power
49. Any path that electrons flow through
ion
Disconnect switches
Distribution System
circuit
50. Positively charged particles of an atom
protons
atom
A motor control center (MCC
cathode