Butane C4H10 is burned with stoichiometric air and the products are cooled to 20°C assuming complete combustion at 100 kPa, the air-fuel ratio is nearest:
A) 17.9
B) 15.5
C) 14.1
D) 13.3
B) 15.5
Use the balanced reaction equation
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How does the size of irrigation pipe relate to its upstream or downstream location? Why?
What will be an ideal response?
A(n) ___________ is the intermediate stage between the larva and the adult
Fill in the blank(s) with correct word
Answer the following statement(s) true (T) or false (F)
1. Condition monitoring means monitoring the condition of a machine when it is not running
2. Eddy-current type of transducer produces an output proportional to velocity
3. A capacitance transducer has two plates of area 5 
each, separated by an air gap of 1mm thickness. Value of capacitance is 442pF.
Alfred Home Construction is considering the purchase of five dumpsters and the transport truck to store and transfer construction debris from building sites. The entire rig is estimated to have an initial cost of $125,000, a life of 8 years, a $5000 salvage value, an operating cost of $40 per day, and an annual maintenance cost of $2000. Alternatively, Alfred can obtain the same services from the city as needed at each construction site for an initial delivery cost of $125 per dumpster per site and a daily charge of $20 per day per dumpster. An estimated 45 construction sites will need debris storage throughout the average year. If the minimum attractive rate of return is 12% per year, how many days per year must the equipment be required to justify its purchase?
What will be an ideal response?