REP - Certified Renewable Energy Professional Geothermal and Hydropower Questions and Answers

Question 1

A project developer is evaluating a high-head, low-flow water resource for a new hydropower plant. Which type of turbine would be most suitable and efficient for this application?

Accepted Answer

Pelton turbine

Answer

Kaplan turbine

Answer

Francis turbine

Answer

Propeller turbine

Question 2

Which of the following geothermal power plant types is best suited for resources with lower water temperatures (107-182°C) and utilizes a secondary fluid with a low boiling point to drive the turbine?

Accepted Answer

Binary cycle plant

Answer

Dry steam plant

Answer

Flash steam plant

Answer

Enhanced geothermal system

Question 3

A major concern during the operational phase of a hydrothermal geothermal power plant is the potential for land subsidence. What is the primary engineering practice used to mitigate this risk?

Accepted Answer

Reinjecting cooled geothermal fluids back into the reservoir

Answer

Installing seismic monitors around the plant

Answer

Using binary cycle technology exclusively

Answer

Drilling production wells to a shallower depth

Question 4

A renewable energy consultant is assessing a potential site for a pumped-storage hydropower facility. What is the primary function of this type of plant in an electrical grid?

Accepted Answer

To serve as a large-scale energy storage solution for grid stability

Answer

To provide baseload power continuously throughout the day

Answer

To desalinize seawater using excess renewable energy

Answer

To generate power with the highest net energy gain

Question 5

During the initial exploration phase for a geothermal resource, which of the following methods would be used to analyze the chemical composition of fluids from hot springs to estimate subsurface temperatures?

Accepted Answer

Geochemical analysis

Answer

Geophysical surveys

Answer

Exploratory drilling

Answer

Geological mapping

Question 6

Which of the following is a significant socio-environmental impact that must be carefully managed when developing large-scale reservoir hydropower projects?

Accepted Answer

Displacement of communities and habitat fragmentation

Answer

Release of hydrogen sulfide gas

Answer

Induced seismic activity from fluid reinjection

Answer

Depletion of the geothermal heat source

A project developer is evaluating a high-head, low-flow water resource for a new hydropower plant.Which type of turbine would be most suitable and efficient for this application?

A project developer is evaluating a high-head, low-flow water resource for a new hydropower plant.
Which type of turbine would be most suitable and efficient for this application?