Which of the following situations will produce an effective load weight larger than the load’s actual weight?
a. Quickly lowering the load with the boom
b. Snubbing a falling load with the hoist drum brake
c. Lifting a fully-submerged object
d. Lifting one end of a girder when the other end is still on the ground
b. Snubbing a falling load with the hoist drum brake
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Metal expands when heated. The amount of expansion is proportional to what two factors?
What will be an ideal response?
Main caps must be installed in one direction only.
Answer the following statement true (T) or false (F)
A joint with flattened or slightly curved articulating surfaces is called a ________ joint.
A) hinge B) saddle C) gliding D) pivot E) condylar
The two metals used in a type K thermocouple are:
A) Chromel and alumel. B) Aluminum and copper. C) Copper and antimony. D) Iron and steel.