EEC Review Practice Exam Questions &
Answers.
An inverter is required on a PV system if:
a. Batteries are used
b. DC power is needed
c. AC power is needed
d. If the load is very large - CORRECT ANSWER AC power is needed
If a PV system is tied to the electric utility grid:
a. It does not have to use batteries
b. It needs batteries
c. It requires power storage
d. It cannot provide AC - CORRECT ANSWER it does not have to use batteries
A stand-alone PV system can provide electricity when no sunlight is present with:
a. Batteries
b. No batteries
c. A battery charge controller
d. a and c - CORRECT ANSWER batteries and a battery charge controller
Wind power depends on air density, wind speed and the size of the area through which
the rotor spins (swept area). Which of the three factors has the largest impact on
producing power?
a. Air density
b. Wind speed
c. Swept area
d. All of them has equal amount of impact - CORRECT ANSWER all of them has equal amount of impact
, If you have a wind turbine with a designed nameplate capacity (system size) of 2 MW in
RI and the capacity factor for RI is 25%, the energy produced in a year amounts to:
a. 4,380 MWh/year
b. 5,750 MWh/year
c. 12,100 kWh/year
d. 20,000 MWh/year - CORRECT ANSWER 4,380 mwh/year
Most research has shown that wind turbines kill only few birds compared to other
human causes such as windows, pesticides and automobiles. However, the birds that
researchers are most concerned being struck by turbine blades are raptors (hawks,
eagles, vultures) because:
a. They have larger populations that other species
b. They are at the top of the food chain
c. They represent a larger percentage of the birds killed annually by turbine blades
d. They are dumber and bump into blades, more than other species
e. They play "chicken" with the blades and lose, more than other species - CORRECT ANSWER they are at
the top of the food chain
Distributed generation refers to :
a. Power generated at a central location
b. Power sent via transmission lines to residential and commercial consumers
c. Power from small, on-site, energy sources located at homes or businesses
d. Power from a very large hydroelectric power plant
e. None of the above - CORRECT ANSWER Power from small, on site, energy sources located at homes or
businesses
Which of the following renewable energy sources has the highest levelized cost of
energy (cents/kWh)?
Answers.
An inverter is required on a PV system if:
a. Batteries are used
b. DC power is needed
c. AC power is needed
d. If the load is very large - CORRECT ANSWER AC power is needed
If a PV system is tied to the electric utility grid:
a. It does not have to use batteries
b. It needs batteries
c. It requires power storage
d. It cannot provide AC - CORRECT ANSWER it does not have to use batteries
A stand-alone PV system can provide electricity when no sunlight is present with:
a. Batteries
b. No batteries
c. A battery charge controller
d. a and c - CORRECT ANSWER batteries and a battery charge controller
Wind power depends on air density, wind speed and the size of the area through which
the rotor spins (swept area). Which of the three factors has the largest impact on
producing power?
a. Air density
b. Wind speed
c. Swept area
d. All of them has equal amount of impact - CORRECT ANSWER all of them has equal amount of impact
, If you have a wind turbine with a designed nameplate capacity (system size) of 2 MW in
RI and the capacity factor for RI is 25%, the energy produced in a year amounts to:
a. 4,380 MWh/year
b. 5,750 MWh/year
c. 12,100 kWh/year
d. 20,000 MWh/year - CORRECT ANSWER 4,380 mwh/year
Most research has shown that wind turbines kill only few birds compared to other
human causes such as windows, pesticides and automobiles. However, the birds that
researchers are most concerned being struck by turbine blades are raptors (hawks,
eagles, vultures) because:
a. They have larger populations that other species
b. They are at the top of the food chain
c. They represent a larger percentage of the birds killed annually by turbine blades
d. They are dumber and bump into blades, more than other species
e. They play "chicken" with the blades and lose, more than other species - CORRECT ANSWER they are at
the top of the food chain
Distributed generation refers to :
a. Power generated at a central location
b. Power sent via transmission lines to residential and commercial consumers
c. Power from small, on-site, energy sources located at homes or businesses
d. Power from a very large hydroelectric power plant
e. None of the above - CORRECT ANSWER Power from small, on site, energy sources located at homes or
businesses
Which of the following renewable energy sources has the highest levelized cost of
energy (cents/kWh)?
