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
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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?
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
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
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