Renewable Energy Practice Test 4

1. Which of the following is a problem with evacuated tubes?

Poor absorption of sunlight

Overheating

Poor reception of sunlight

Underheating

2. How does a photovoltaic refrigeration system work?

By converting sunlight into DC current which is used to drive an AC motor coupled to a compressor of a vapour compression system

By converting sunlight into DC current to drive a DC motor which is coupled to a compressor of a vapour compression system

By converting sun’s thermal energy into electricity which is used to drive an AC motor coupled to a compressor of a vapour compression system

By converting sun’s thermal energy into electricity which is used to drive a motor coupled to a compressor

3. Which application is best suited for a solar water system?

Residential applications

Food industry

Semiconductor industry

Liquid adsorption

4. Which of the following groups are types of solar drying technology?

Photovoltaic, direct and indirect, active

Indirect, direct and active, photovoltaic

Indirect, direct and active, passive

Indirect, passive and active, direct

5. What is refrigeration?

A process where is work is done is to add heat from one system to another

A process where heat is used by the system to do work

A process where work is done to move heat from one system to another

A process where work is done to add cold air into the system

6. Which of the following determines complexity and size of solar water heating system?

Chemicals

Changes in ambient temperature

Solar radiation constant

Food

7. Bowl collectors use a fixed curved receiver.

False

True

8. A building with excessive glass cover ______

results in freezing

results in a pleasant temperature within the building

results in overheating

damages the building material

9. Solar heat industrial systems are used for desalination.

True

False

10. What does a refrigerant do in a vapour compression refrigeration system?

Absorbs heat continuously

Converts thermal energy into electrical energy

Removes heat from one system and empties it into another system

Adds heat to the system