SOLUTIONS
Which lay of wire rope has the strand wires in line with the rope axis? -
Answer ✔✔Regular Lay
At what speed should the counterweight safeties be set to trip? - Answer
✔✔Up to 10% higher than the car governor
Which type of safety uses an oil buffer between the car and safety
planks? - Answer ✔✔Type C
What is the purpose of the terminal motion switch? - Answer ✔✔slow
down and stop the car automatically at or near the top or bottom landing
If you have a 3500 lb. car rated at 4000 lbs. capacity, how much should
the counterweight assembly weigh for a normal 40% installation? -
Answer ✔✔5100 lbs.
When the pit directional limit switch is actuated, the normal circuits will
allow the car to run - Answer ✔✔Up
_______should not be disassembled in the field. - Answer ✔✔Oil
Buffers
, The loss of traction between the hoist ropes and the machine driver
when the counterweight lands on its buffer avoids... - Answer ✔✔The
elevator car being pulled into the over head.
Refer to Table 1. With a safety factor of 5, what is the breaking strength
for 1 1/8" nylon rope? - Answer ✔✔52,000 lbs.
Which of the following applies to rope usage? - Answer ✔✔Prevent
manila rope from unraveling by using whipping.
What does the designation 3/8" 6 X 30 improved plow steel mean? -
Answer ✔✔It is a high strength cable with 6 strands composed of 30
wires per strand?
When using Crosby clips, which of the following statements is correct? -
Answer ✔✔To determine the correct minimum spacing multiply the
rope diameter times 6.
When handling and storing a freight platform, what do you need to keep
in mind? - Answer ✔✔With the platform on edge, handle it from the
ends and move on rollers.
Which of the following statements is true concerning capstans? -
Answer ✔✔Both b, and c.
b. Fasten the hoist to a beam or other building structure.
c. To interrupt hoisting ease off on the pulling rope