Using oxyacetylene welding method to weld a 3 ft. long seam in a 3/8 in. thick plate at a consumption rate of 9 cu. ft. /ft. of weld for oxygen and 7 cu. ft./ft. for acetylene. What is the total combined gas consumption in cu. ft.?

 

 

Inventory costing methods place primary reliance on assumptions about the flow of

A) goods

B) cost

C) resale prices

D) values

A double-notched specimen with dimensions of h = 10cm, w = 3cm, and a thickness of t = 2mm is subjected to a load of P = 32kN. The material has a Young’s modulus of 180 GPa and Poisson’s ratio of v = 0.42

1. a) Determine the energy release rate for a crack length of a = 4mm

2. b) Does this satisfy the conditions for plane strain? Is the assumption of LEFM valid?

   [4 Marks]

3. c) Determine the minimum dimensions and crack length to satisfy the conditions of both plane

strain and LEFM.

In the figure shown below there are 125 ft of 2 -in pipe, 75ft of 6 -in pipe, and 150 \mathrm{ft} of 3 -in pipe, all cast iron. There are two 90 elbows and an open globe valve, all flanged. If the exit elevation is zero and the elevation at A is 100 ft, what horsepower is extracted by the turbine when the flow rate is 0.16 of water at ? For water at , take and slug/ft.s. For cast iron, . For Re=113500,37800, and 75600 , take f 0.0314,0.0266, and 0.0287 respectively.

sharp 2" entrance: K=0.5; two 2" 90 elbows: K=2(0.39)

2" sudden expansion: K 0.79 ; 3" open globe valve: K 8.5