Why is a defrost cycle rarely needed for a dual-fuel heat pump system?
a. Electric heaters are used to melt the frost.
b. Dual defrost thermostats are used.
c. The balance point, where the heat pump shuts down, is generally above freezing.
d. The furnace keeps the frost from forming on the outdoor coil.
c. The balance point, where the heat pump shuts down, is generally above freezing.
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Answer the following statement(s) true (T) or false (F)
1. An older ewe will probably give more milk than a younger one. 2. Usually, lambs that are born on the range are weaned at 60 days. 3. Yearling weight is a more accurate indicator of growth in an animal than weaning weight. 4. Grease weight includes all material in wool before it is washed or scoured. 5. Clean weight is rounded to the nearest tenth of a pound.
A typical tapered pipe reamer can usually handle pipe sizes as large as _____
a. 1" b. 2" c. 3-1/2" d. 4"
With the ignition off and the key out of the ignition, what should happen if a technician uses a screwdriver to gently push on the throttle plate in an attempt to open the valve?
A) The throttle should move, and then spring back to the home position when released. B) Nothing. The throttle should be kept from moving by the motor, which is not energized with the key off. C) The throttle should move closed, but not open further than the default position. D) The throttle should move and stay where it is moved and not go back unless moved back.
Good dimensioning practice requires the student to:
a. Learn correct technique b. Learn the rules of placement c. Learn the choice of dimension d. All of the above