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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. Voltage Source - Conductor - Switch - Load
superconductor
Kirchoff's Voltage Law
Simple Circuite Contains?
Nuclear energy
2. 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.
Distribution System
Apparent Power
Nuclear energy
electrons
3. Unit's main generator - offsite power via the switchyard - and redundant emergency diesel generators
SR Sources of power
electric generator
High Voltage Lines
Typical DC system voltage ratings used in NPPs
4. V=IR.
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5. A material that has no resistance to electrical current - this usually occurs near absolute zero
Generator
electrolyte
open circuit
superconductor
6. Changes the voltage of electricity so that it can be transferred over long distances
Load center breakers
Disconnect switches
transformer
Caution around DC Circuits
7. Is the vector sum of real and reactive power in an AC circuit and is measured in volt-amperes.
Apparent Power
Circuit Breaker
current electricity
electric generator
8. 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.
battery
Current transformers (CTs)
electric generator
Molded case circuit breakers (MCCBs)
9. Main Generator feeds main transformer - aux transformer (to aux loads) and crosstie to train B
Normal Operation
General Design Criterion 17 (GDC-17)
DC
Changes that need to be analyzed to determine impact on voltage - cable and breaker ratings - as well as battery capacity
10. A circuit with a complete path - which allows for charges to move
closed circuit
Nuclear energy
Kirchoff's Voltage Law
transformer
11. 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 ****
Apparent Power
Fault
Simple Circuite Contains?
Generator off-line
12. 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.
Swtichyard
Circuit Breaker
SR Sources of power
Distribution System
13. Atoms that have acquired an electrical charge
Simple Circuite Contains?
static electricty
neutrons
ion
14. Used in numerous applications to amplify or perform switching operations.
orbital
Transistors
Real Power
Fault
15. Used for transmission systems which are used for transporting bulk power from large generators to areas with heavy load concentrations such as cities.
Current transformers (CTs)
orbital
Changes that need to be analyzed to determine impact on voltage - cable and breaker ratings - as well as battery capacity
High Voltage Lines
16. Significant impact on the capability of equipment to perform properly since the torque delivered by a motor is proportional to the voltage squared
Retail Lines
reduced voltage
Transmission Substation
SR Sources of power
17. 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
Current
Reactive Power
Load center breakers
Kirchoff's Current law
18. Total Current entering a junction must equal current leaving a junction
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19. 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
Switchgear
Retail Substation
Generator off-line
neutrons
20. Used to convert mechanical energy to electrical energy coupled to the turbine shaft
Generator off-line
open circuit
Simple Circuite Contains?
Generator
21. A material that dissolves in water producing a solution that conducts electricity
electrolyte
Changes that need to be analyzed to determine impact on voltage - cable and breaker ratings - as well as battery capacity
Diodes
Power
22. A material that is usually insulated but becomes conductive through the addition of an impurity
atom
Current transformers (CTs)
ion
semiconductor
23. 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.
General Design Criterion 17 (GDC-17)
Isolated Phase Bus (IPB)
Reactive Power
Molded case circuit breakers (MCCBs)
24. Analogous to a power plant switchyard but on the load end. Voltage is stepped down to Distribution System voltages.
current electricity
Transmission Substation
static electricty
Non-segregated Phase Bus
25. Offsite power comes in via sartup transformer and some sites can backfeed power from grid via the main transformer OR even a crosstie
electrons
anode
Generator off-line
neutrons
26. 125 and 250 VDC.
Transformer (smaller)
Typical DC system voltage ratings used in NPPs
circuit
Transmission Substation
27. Operate somewhat like check valves such that current only flows in one direction - when the voltage on the input is higher than the output
cathode
Real Power
closed circuit
Diodes
28. The flow of electrons
Generator
Circuit Breaker
anode
electricity
29. 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.
electric generator
A motor control center (MCC
Load center
electricity
30. One or more cells connected in series
Caution around DC Circuits
Ohm's Law
Current transformers (CTs)
battery
31. The product of voltage times current
Power
electrode
Ohm's Law
Three Phase Power
32. The path of an electron in an atom or molecule
orbital
Apparent Power
charge
battery
33. Positively charged particles of an atom
Typical DC system voltage ratings used in NPPs
protons
PSB-1
Current
34. 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 -
battery
protons
Changes that need to be analyzed to determine impact on voltage - cable and breaker ratings - as well as battery capacity
electricity
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
Load center
Battery Rooms
Ohm's Law
Potential transformers (PTs)
36. Any path that electrons flow through
SR Sources of power
Current transformers (CTs)
circuit
Kirchoff's Voltage Law
37. The flow of electrons (-) through a material
current electricity
Generator
Reactive Power
Caution around DC Circuits
38. 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)
Transmission Substation
Non-segregated Phase Bus
Changes that need to be analyzed to determine impact on voltage - cable and breaker ratings - as well as battery capacity
39. Temperature Controlled
Battery Rooms
Molded case circuit breakers (MCCBs)
Real Power
Transmission Substation
40. An electrode where reduction occurs
cathode
Generator
protons
ion
41. Building blocks of elements consisting of a positively charged nucleus surrounded by electrons
Real Power
atom
transformer
General Design Criterion 17 (GDC-17)
42. Is measured in watts and represents the power consumed by the resistive elements in an AC circuit
Real Power
electrolyte
Transformer
Distribution System
43. A material through which a charge does not move easily
Kirchoff's Voltage Law
closed circuit
insulator
Ohm's Law
44. An electrode where free electrons are produced
anode
Transformer (smaller)
A motor control center (MCC
insulator
45. Used to optimize power output. Multiply by root 3.
Kirchoff's Voltage Law
cathode
Retail Substation
Three Phase Power
46. (analogous to flow) predominantly flows on the surface of the conductor.
Kirchoff's Current law
electrode
Current
Transients
47. Voltage is stepped down again to serve smaller industrial and commercial customers as well as residential needs.
superconductor
Kirchoff's Voltage Law
Transients
Retail Substation
48. A voltage source that does not change polarity such as that delivered from a battery.
atom
Normal Operation
DC
Transients
49. A material in which charge moves through easily
Retail Lines
conductor
SR Sources of power
Three Phase Power
50. Voltage is stepped down again to serve smaller industrial and commercial customers as well as residential needs.
Transformer (smaller)
electric generator
orbital
protons