The baseplates at the bottoms of the columns are connected to the foundations at points A and D by bolts and may be assumed to act as pin supports. Joint B is rigid. At C where the bottom flange of the girder is bolted to a cap plate welded to the end of the column, the joint can be assumed to act as a hinge (it has no significant capacity to transmit moment). Compute the reactions at A and D.
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A three-phase motor contains six poles per phase. The synchronous speed of this motor is ____ RPM when connected to 60 Hz.
A. 1200 B. 900 C. 1800 D. 720
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One of the oldest and most popular methods of performance appraisal used to assess factors such as quantity and quality of work, job knowledge, cooperation, loyalty, dependability,and so on is the:
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Structural steels fall into ____ major classifications.
A. three B. four C. five D. six
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