Manufacturers of solar panels and complete systems appeared in the ____ in response to energy shortages and government incentives for installing renewable energy systems.

A. 1950s
B. 1960s
C. 1970s
D. 1980s


Answer: C

Trades & Technology

You might also like to view...

An aggressive stockbroker claims an ability to consistently earn 12% per year on an investor’s money. A client invests $10,000 now, $30,000 three years from now, and $8000 per year for 5 years starting 4 years from now. (a) How much money can the client withdraw every year forever, beginning 20 years from now? (b) What is the cap­italized cost of the client’s investments if the $8000 per year is expected to continue for an unspecified time into the future?

What will be an ideal response?

Trades & Technology

This kind of pressure relief valve has a closer range between cracking and being fully open:

a. pressure reducing b. pilot operated c. simple relief d. flow reducing

Trades & Technology

An R22 system specifies a subcooling of 10°F at the current operating conditions. The technician measures a liquid pressure of 226 psig and a liquid line temperature of 90°F. The system is

A) undercharged B) overcharged C) charged correctly

Trades & Technology

The accuracy of many volumetric flow meters is influenced by changes in the pressure and/or temperature of the measurement fluid. This is because changes in pressure and temperature can change product __________.

A. time constant B. density C. integrity D. pH

Trades & Technology