Engineering, 12.02.2020 02:25 chambersjamal05
Problem 1: Consider the following ambiguous BNF grammar: β ? : | = β && | || | ! | | true 0 false | () β x y z Rewrite the grammar so that it is no longer ambiguous and has the following properties: The operators have the following precedence, from highest to lowest: ( ), !, &&, 11, ?:, =. The !, ?:, and = operators are right associative, and the && and || operators are left associative
Answers: 2
Engineering, 04.07.2019 18:10
Water at 55c flows across a flat plate whose surface temperature is held constant at 95c. if the temperature gradient at the plate's surface for a given value of x is 18 c/mm, find a) local heat transfer coefficient. b) heat flux
Answers: 3
Engineering, 04.07.2019 18:10
Shafts are machine elements that are used to a) carry axial loads b) direct shear loads c) transmit power d) rotate at constant speed e) none of the above circular and square shafts subjected to the same torque under the same circum behave a) the same way b) almost the same way
Answers: 2
Engineering, 04.07.2019 18:10
Aturning operation is performed with following conditions: rake angle of 12Β°, a feed of 0.35 mm/rev, and a depth of cut of 1.1 mm. the work piece is aluminum alloy 6061 with t6 heat treatment (a16061-t6). the resultant chip thickness was measured to be 1.0 mm. estimate the cutting force, fc. use shear stress of 207 mpa and coefficient of friction on the tool face of 0.6.
Answers: 1
Engineering, 06.07.2019 04:20
Assume that you are asked to perform a boring operation on a large-diameter hollow workpiece. would you use a horizontal or a vertical boring mill?
Answers: 3
Problem 1: Consider the following ambiguous BNF grammar: β ? : | = β && | || | ! | | true 0...
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