The lifting capacity of a block and tackle is higher if it has _____
a. more parts of line
b. more hooks
c. bigger hooks
d. more shackles
a
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PROBLEM 3.131 Shafts A and B are made of the same material and have the same length and cross-sectional area, but A has a circular cross section and B has a square cross section. Determine the ratio of the maximum values of the angles and when the two shafts are subjected to the same maximum shearing stress Assume both deformations to be elastic.
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When diagnosing a problem with a hydrostatic system and a technician checks the case drain pressure for a motor an excessive value would indicate:
a. the flushing valve is working good b. there is excessive internal leakage c. the case drain relief valve is stuck open d. the oil viscosity is too high