Compared to furnaces installed at lower altitudes, furnaces installed at higher altitudes
A) Have a higher firing rate B) Require a larger vent
C) Heat up more quickly D) Have a lower firing rate
D
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The minimum water-cement ratio for complete hydration of Portland cement is approximately 0.4. However, we generally need a larger w- c ratio in concrete mixes. Why is that so, and what is the effect of greater-than-minimum w-c ratio?
What will be an ideal response?
Which of the following has to be true based on this process description?
A fresh feed stream contains 50.0mol/s each of A and B and no other compounds. It is mixed with a recycle stream and enters a reactor. The reaction A + B ? C is carried out in the reactor. The reaction reaches equilibrium and 50% of the entering A is converted into C. The reactor effluent is sent to a distillation column. The bottom product from the column is 98.0 mol% pure C and is the product from the process. The top product contains 1.0 mol% C and the entire top product is recycled. The entire process operates at steady state.
Determine the cost to finish the slab in Problem 56 using a productivity of 0.013 labor hours per square foot and an average labor rate of $31.17 per labor hour.
What will be an ideal response?
Slip compensation is used to maintain a constant motor __________.
A. torque B. speed