A 100-hp three-phase squirrel-cage induction motor is connected to a 240-volt line. The motor does not contain a NEMA design code. A dual-element time delay fuse is to be used as the short-circuit protective device. Use the accompanying figure to determine the size needed.
a. 350 A
b. 400 A
c. 450 A
d. 500 A
c. 450 A
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Ms. Johns has a storage building measuring 32 feet long, 24 feet wide, and 12 feet high on her farm.
a. What is the storage capacity of the building in cubic feet? b. If she fills the building to 82 percent capacity, how many bushels of corn can be stored in the building?
For the best working position, the work should be ________
A) At neck or head level B) Overhead by about 1 foot C) At chest or elbow level D) At knee or ankle level
The strength to weight ratio is defined as
a. the ratio of the strength of the material to its weight b. the ratio of the strength of the material to its specific weight c. the ratio of the strength of the material to its mass d. the ratio of the strength of the material to its modulus of elasticity