(a) Construct the influence lines for the moment and the vertical reaction R A at support A for the beam in Figure P12.51. Evaluate the influence line ordinates at the quarter points of the span. (b) Using the influence lines for reactions, construct the influence line for moment at point B. Compute the maximum value of R A produced by the set of wheel loads. EI is constant.
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Technician A says installing straight seam cam bearings is best accomplished using an expanding mandrel. Technician B says lubricating the outside of the bearing with 90- or 140-weight oil makes installation much easier. Who is right?
A. Technician A B. Technician B C. Both technicians D. Neither technician
Very few domesticated crop plant species have been genetically altered from their original, natural form
Indicate whether the statement is true or false
Which of the following best represents the position of agriculture regarding pollution control policy?
a. Agriculture is treated the same as industry. b. Confined animal feeding operations are treated as non point source pollution. c. The costs of pollution from agriculture can readily be passed through to consumers. d. Agriculture has few well-defined points of pollution discharge and, therefore, is treated as non point source pollution. e. c and d above.
Which of the following types of grinding cannot be done on a universal cylindrical grinder?
A) Reciprocating surface grinding B) Traverse grinding C) Rotary surface grinding D) Internal grinding