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