A forester places a fabric tape around the trunk of a tree at about chest height. What is he or she probably measuring?
What will be an ideal response?
The diameter of the tree trunk.
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Answer the following statement(s) true (T) or false (F)
1. Electric brakes have been in use since the early 1900s. 2. An electric brake consists of three friction surfaces, or shoes. 3. The coil leads of an AC magnetic brake are normally connected directly to the motor terminals. 4. For AC shoe brakes, the operating coils are shunt wound for across-the-line connections and series wound for connecting in series with DC motor armatures. 5. Series-wound brakes may be used for metal processing applications.
The scientist who documented the first successful use of artificial insemination used which of the following?
a. cows c. turkeys b. swine d. dogs
Why must heat from braking be dissipated?
What will be an ideal response?
When is the water coil in a water source heat pump the acting evaporator?
A) in the cooling cycle B) in the heating cycle C) in the defrost cycle D) only when the unit is operating