REP Renewable Energy Technologies & Applications 2

Question 1

What is the primary function of a Maximum Power Point Tracker (MPPT) in a PV system?

Accepted Answer

Adjust the operating voltage to maximize power output

Answer

An MPPT continuously adjusts the electrical operating point of PV modules to extract the maximum available power under varying conditions.

Question 2

In a concentrating solar power (CSP) trough system, which fluid is most commonly used as the heat transfer medium?

Accepted Answer

Synthetic oil (therminol)

Answer

Parabolic trough CSP plants most commonly use synthetic oil (such as Therminol VP-1) as the heat transfer fluid between the collectors and the steam generator.

Question 3

Which wind turbine configuration is most commonly deployed in utility-scale onshore wind farms today?

Accepted Answer

Horizontal-axis, upwind, three-blade turbine

Answer

The horizontal-axis upwind three-blade design dominates utility-scale installations due to its high efficiency, structural simplicity, and well-established supply chain.

Question 4

What does the 'capacity factor' of a renewable energy plant represent?

Accepted Answer

Actual energy produced divided by maximum possible energy over a period

Answer

Capacity factor is actual energy generated divided by the energy that would be produced if the plant ran at full nameplate capacity for the entire period.

Question 5

Which geothermal resource type requires no water injection and uses naturally occurring steam directly to drive turbines?

Accepted Answer

Dry steam reservoir

Answer

Dry steam resources, such as The Geysers in California, produce superheated steam directly from the reservoir that can be piped straight to steam turbines.

(REP) Certified Renewable Energy Professional Practice Test

(REP) Certified Renewable Energy Professional Practice Test

REP Renewable Energy Technologies & Applications 2