After a non-drive wheel bearing has been properly adjusted, the wheel should have how much end play?
A) Zero B) 1/16 to 3/32 in. C) 0.001 to 0.005 in. D) 0.10 to 0.30 in.
C
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You are asked to calculate ?H when 0.1 kg of steam is heated at a constant pressure of 0.1 MPa from 373.15 K to 423.15 K. You remember learning that the heat capacity of water is about 4.19 kJ/kg•K, so you multiply 0.1 kg by 50 K by 4.19 kJ/kg•K and get an answer of 20,950 joules. Which of the following is the best assessment of your answer?
A. Your calculation is accurate, but you should round the answer to 21,000 joules, since your heat capacity only had three significant figures and 20,950 joules has four. B. This is a reasonable estimate of ?H, but it would have been more accurate to use the data in the steam tables than to use MCP?T. C. This is a reasonable estimate of ?H, but it assumes CP is constant with respect to temperature. You can get a more accurate answer by accounting for the temperature dependence of CP. D. This is not a reasonable estimate of ?H. 4.19 kJ/kg•K is a heat capacity of liquid water and you cannot assume water vapor has the same heat capacity. E. This is not a reasonable estimate of ?H. You should have used CP* = (5/2)R.
In order to expand into foreign markets, middle-sized organizations should
a. expand rapidly into many different markets. b. locate international specialists to help them. c. move production to another country. d. buy a foreign company. e. hire top managers who have international expertise.
Jensen Systems purchases several parts for the instruments it makes via a fixed-price contract of $155,000 per year from a local supplier. The new president of Jensen wants to make the parts in-house through the purchase of equipment that will have a first cost of $240,000 with an estimated salvage value of $30,000 after 5 years. The AOC is difficult to estimate, but company engineers have made optimistic, most likely, and pessimistic estimates of $70,000, $85,000, and $120,000 per year, respectively. Determine if the company should purchase the equipment under any of the operating cost scenarios. The MARR is 20% per year.
What will be an ideal response?
When a control is required to control space or product temperature, it is called a ____.
A. safety device B. thermostat C. pressure control D. speed control