Buffers are used to ensure that the power dissipation of a device driving multiple loads is not exceeded
Indicate whether the statement is true or false
FALSE
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What describes a chemical that kills some plants and not others?
a. discriminating c. nonselective b. selective d. weak
Sound is transmitted by __________ in any material: solid, liquid, or gas.
A. waves B. vibrations C. noise D. energy
The temperature measurement of the air outside around the unit is called:
A) Supply-air temperature. B) Return-air temperature. C) Ambient temperature. D) Approach temperature.
What is an oil lift?
A) An oil lift helps return oil up a vertical riser using an integral orifice tube which creates a Bernoulli effect, forcing oil up the line. B) An oil lift is the increase in pressure created in the suction line due to the presence of refrigerant oil. C) An oil lift is a trap at the bottom of a vertical suction riser. D) An oil lift is an electric oil pump that moves collected refrigerant oil up against gravity.