A rock - forming crystalline mixed silicate which constitute about 60% of the earth's surface.

A compound rock, a crypto - crystalline form of silica, which is dens, tough, breaking with a conchoidal fracture.

Is the process of using injection wells to bubble air through groundwater.

A popular term used by utilities to mean upgrading existing plant.

A dense, fine grained, light colored igneous rock which is rich in silica.

An opening in lava or in volcanic area through which steam and other hot gases are escaping into the air is called:

Tidal power is the power generated from:

Converts chemical energy directly into electrical energy.

Generates a voltage from incident light, usually light in the visible region.

All of the following terms are synonymous with quanta of electromagnetic theory except:

In geothermal power plants waste water is:

In a liquid-dominated geothermal plant, what process occurs when the saturated steam passes through the turbine?

What do you call a conversion technology that yields electricity straight from sunlight without the aid of a working substance like gas or steam without the use of any mechanical cycle?

Tidal power plant is attractive because it has:

Tidal power is the power generated from:

Converts chemical energy directly into electrical energy.

Generates a voltage from incident light, usually light in visible region.

The statement that the product of the error in the measured determination of a particle's position and its momentum is of the order of Planck's constant h is known as:

The flow process through shock waves is highly irreversible and cannot be approximated as being:

Beaufort scale is used for measuring what?

Betz law is widely used in:

Rocks having excessive internal stresses may produce spalling. These rocks are called as ____

Solar energy arrives at the outside of the earth's atmosphere at an average rate of ________.

How many percent of solar energy survives absorption and reflection?

Solar energy is captured in:

Which of the following solar collectors are essentially wide, flat boxes with clear plastic or glass coverings known as the glazing.

Which of the following collectors use mirrors and/or lenses to focus the suns energy on a small absorber area.

Which of the following collectors are more complex but their efficiencies are higher?

Which of the following collectors are useful when extremely hot transfer fluid is needed and are generally limited to commercial projects?

The shading factor in calculating the heat absorbed by the solar collector has a value of approximately:

The ratio of energy absorbed by the transfer fluid to the original incident energy striking the collector.

As the difference between the ambient air and average plate (or inlet) temperatures increases, what happens to the collector efficiency?

Distributed collector system is also known as:

Central receiver system is also known as:

Which of the following main approaches to solar energy generating systems describes that parabolic tracking trough concentrators focus sunlight on evacuated glass tubes that run along the collectors focal lines.

Trough electric technology is relatively mature but due to the low temperatures, average annual thermal efficiencies are only:

A field of heliostats or tracking mirrors concentrates solar energy onto a receiver on a central tower.

In a power tower system typical thermal efficiencies is in the range:

A dish engine system has an efficiency of

Practical and economic issues limit trough electric systems to about:

Practical and economic issues limit tower electric systems to approximately:

Thermal efficiency of a geothermal power plant is approximately:

A flash steam cycle can be used if the hot water temperature is approximately:

A binary cycle using a separate heat transfer fluid if the temperature of the hot water is between approximately _________.

For every kilometer of depth, the temperature of the earth' s crust increase by:

Multiple wells produce steam at 690 to 820 kPa and temperature of ________.

In a hot rock systems, water is injected through injection wells into artificially made fractured rock beds of how many kilometers below the surface?