How do rating problems in heat transfer differ from the sizing problems?
What will be an ideal response?
The rating problems deal with the determination of the heat transfer rate for an existing system at a specified temperature difference. The sizing problems deal with the determination of the size of a system in order to transfer heat at a specified rate for a specified temperature difference.
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Row crops are simply those plants that are planted and cultivated in ____________________
Fill in the blank(s) with correct word
Technician A says that a vacuum gauge measures the difference between intake manifold vacuum and atmospheric pressure. Technician B says that a vacuum gauge can help to diagnose worn piston rings. Who is correct?
A. A only B. B only C. Both A and B D. Neither A nor B
Answer the following statement(s) true (T) or false (F)
1. Good engineers don’t need good “people and team-work skills” since most of their work is done independently in their offices or labs. 2. Engineers often use computers to model and analyze problems. 3. Mechanical engineers are involved in the design, development, testing, and manufacturing machines, robots, tools, gas turbines, internal combustion engines. 4. Manufacturing engineers develop, coordinate, and supervise the process of manufacturing all types of products. 5. Biomedical engineering combines biology, chemistry, medicine, and engineering to solve a wide range of medical and health-related problems.
What is the additional charge required for a system with a factory charge of 56 oz of R-410A, an assumed length of 15 ft, and a3/8 in liquid line that is 35 ft long?
A) (35 - 15 ) × 0.6 = 12 oz B) 56 oz + 21 oz = 77 oz C) 56 oz + 12 oz = 68 oz D) 35 × 0.6 = 21 oz