When metering in zeotropes, why must the liquid flash off to vapor before entering the compressor?
A) To ensure maximum efficiency throughout the system
B) To prevent too much liquid from damaging the compressor
C) To ensure the unit and cylinder remain in a saturated state
D) To prevent the system from freezing solid
B
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Technician A says the sun gear always rotates in the opposite direction to the rotation of the pinion gears. Technician B says the pinion gears will always follow the same direction as the ring gear when the ring gear and carrier pinions are free to rotate at the same time. Who is correct?
A. A only B. B only C. Both A and B D. Neither A nor B
When you visit your 85-year-old grandmother, you always wonder why she keeps the temperature of her apartment so high. You sweat the entire time you are there while she wears a sweater. In addition, you notice that she seems to have no energy and never wants to go out with you. You know that it is not because she is not getting enough food because she seems to be gaining weight. What is the likely endocrinological problem that she has? Explain why each symptom is occurring, relative to the hormone that is related to the disorder.
What will be an ideal response?
Lugging an engine means ________
A) Wide-open throttle in low gear above 25 miles per hour B) That engine speed does not increase when the throttle is opened wider C) Starting a cold engine and allowing it to idle for longer than five minutes D) Both A and B
In a radiant floor-heating system, the terminal device(s) is commonly _____
a. a convector b. a unit heater c. a radiator d. plastic tubing