egee exam 3

WHICH ENERGY SOURCES TYPICALLY DON'T FLUCTUATE DURING POWER GENERATION?

nuclear and hydro

THE REASON HYDROPOWER IS CONSIDERED RENEWABLE IS

the hydrologic cycle

WHAT PROPORTION OF US ELECTRICITY COMES FROM HYDROELECTRIC DAMS?

6%

WHAT IS THE MAIN REASON THAT OUR POWER GRID USES ALTERNATING CURRENT TECHNOLOGY?

AC power is easier to transform to higher/lower voltages

THE CHERNOBYL ACCIDENT WAS A NUCLEAR EXPLOSION

FALSE

WHICH OF THE FOLLOWING STRATEGIES IS USED TO SMOOTH VARIABILITY FROM WIND AND SOLAR?

Interconnecting multiple wind and solar plants and energy storage

WHICH OF THE FOLLOWING IS NOT A CHALLENGE WITH WIND AND SOLAR POWER?

Non-Renewable

THE PROBLEM OF NEEDING TO INSTALL LARGE TRANSMISSION CAPACITY TO MOVE ELECTRONS FROM THE POWER GENERATION SOURCE TO A MARKET IS CALLED WHAT?

location problem

THE SPLITTING OF A LARGER NUCLEUS INTO TWO SMALLER NUCLEI

nuclear fission

WIND ENERGY PRODUCED DEPENDS ON WHICH OF THE FOLLOWING FACTORS

B, C and D

WHAT PIECE OF EQUIPMENT IS NEEDED TO CONNECT A DC POWER GENERATOR TO THE AC POWER GRID?

rectifier

THE CHALLENGE ASSOCIATED WITH A RENEWABLE ENERGY WHERE EXCESS POWER GENERATION CANNOT BE SAVED FOR LATER USE

storage

IF A WIND TURBINE EXTRACTED 100% OF THE KINETIC ENERGY OUT OF THE WIND, WHAT WOULD HAPPEN?

the wind would stop blowing

THE CHALLENGE ASSOCIATED WITH WIND ENERGY THAT FLUCTUATES THROUGHOUT THE DAY

intermittency

NUCLEAR WEAPONS CAN BE CONVERTED TO NUCLEAR REACTORS

TRUE

THE CONSENSUS OF THE SCIENTIFIC COMMUNITY IS THAT DEEP GEOLOGIC STORAGE OF HIGH LEVEL RADIOACTIVE WASTE IS A SAFE LONG TERM SOLUTION

TRUE

THE SUN DELIVERS APPROXIMATELY 10,000 TIMES MORE ENERGY PER SECOND TO THE EARTH THAN THE WHOLE WORLD'S POPULATION USES

TRUE

WIND IS CAUSED BY UNEVEN HEATING OF THE EARTH'S SURFACE

TRUE

WHAT DOES THE DUCK CURVE EXPLAIN?

The rapid change in power demand from the grid when solar output declines at the end of the day

THE CHALLENGE ASSOCIATED WITH WIND ENERGY WHOSE POWER OUTPUT CANNOT BE FORECAST IN ADVANCE

predictability

WHICH DESCRIBES A MAIN DIFFERENCE BETWEEN SOLAR AND WIND?

wind turbines tend to produce more at night, while solar panels to produce more during the day

A 9 VOLT BATTERY DRAWS 2 AMPS OF CURRENT. HOW MUCH POWER IS PRODUCED?

18 Watts

IF A SOLAR FARM GENERATES 10 MW IN ARIZONA (320 SUNNY DAYS PER YEAR) IS MOVED TO PENNSYLVANIA (160 SUNNY DAYS PER YEAR), WHAT IS THE NEW POWER OUTPUT?

5 MW

WHAT ARE THE THREE STAGES OF THE ELECTRICITY SUPPLY CHAIN?

Generation, Transmission and Distribution

WHICH OF THE FOLLOWING PROBABLY PRODUCES DIRECT CURRENT?

Solar photovoltaics

ALTERNATING CURRENT POWER IS BASED ON WHAT PHYSICAL CONCEPT?

The relationship between electricity and magnetism

NUCLEAR, WIND, SOLAR, AND HYDROPOWER ARE ALL RENEWABLE FORMS OF ENERGY

True

WHICH OF THE FOLLOWING DESCRIBES THE MINUTE TO MINUTE VARIABILITY OF WIND ENERGY?

Turbulence

IN AN ALTERNATING CURRENT POWER SYSTEM, IF THE CURRENT IS INCREASED WHILE KEEPING POWER CONSTANT, WHAT MUST HAPPEN TO VOLTAGE?

Voltage decreases

PANELS THAT USE SUNLIGHT TO HEAT UP WATER, SPINNING A TURBINE ARE CALLED WHAT?

concentrated solar

LAYERS OF SILICON THAT DIRECTLY CONVERT SUNLIGHT INTO AN ELECTRIC CURRENT ARE CALLED WHAT?

photovoltaic cells

NUCLEAR, WIND, SOLAR, AND HYDROPOWER ARE ALL ENERGY FORMS THAT DO NOT DIRECTLY EMIT CARBON DIOXIDE INTO THE ATMOSPHERE

True