In a beam bridge, the end supports of a single span are called _____.
a. amendments
b. trusses
c. abutments
d. piers
c. abutments
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Inverters are used not only to vary the speed of the squirrel-cage motor, but also to vary its ____, start the motor slowly and smoothly, and increase the motor's efficiency.
A. current B. torque C. horsepower rating D. voltage rating
Elements are:
A) Pressure and temperature. B) Force and pressure. C) The forces of velocity pressure and density upon a substance. D) Naturally occurring chemicals.
Idler sprockets should be placed:
A. on the slack side of the drive. B. on the tension side of the drive. C. either side of the drive. D. on all drives.
These lines are used to identify alternate positions of moving parts.
A. section lines B. break lines C. chain lines D. phantom lines E. stitch lines