Engineering, 13.11.2019 23:31, derekmartinez
Acompany issues laptop computers to 100 employees. the value of each laptop including hardware, software, and data is $1,000. on average, employees lose one laptop a month. management determines that it can purchase hardware locks for a total of $1,000 and reduce the number of lost laptops to one per year. should they purchase the locks? a. yes, because the savings is greater than the cost of the control. b.yes, because the cost of the control is greater than the savings. c.no, because the savings is greater than the cost of the control. d.no, because the cost of the control is greater than the savings.
Answers: 2
Engineering, 04.07.2019 18:10, Strick1530
Which of the following components of a pid controlled accumulates the error over time and responds to system error after the error has been accumulated? a)- proportional b)- derivative c)- integral d)- on/off.
Answers: 2
Engineering, 04.07.2019 18:10, mamasbug4285
An air compression refrigeration system is to have an air pressure of 100 psia in the brine tank and an allowable air temperature increase of 60°f for standard vapor compression cycle temperatures of 77 f entering the expansion cylinder and 14 f entering the compression cylinder, calculate the coefficient of performance a. 2.5 b 3.3 c. 4.0 d. 5.0
Answers: 3
Engineering, 04.07.2019 18:20, cxttiemsp021
Atank with constant volume contains 2.27 kg of a mixture of water phases (liquid-vapor). in the initial state the temperature and the quality are 127 °c and 0.6, respectively. the mixture is heated until the temperature of 160 oc is reached. illustrate the process in a t-v diagram. then, determine (1) the mass of the vapor in kg at the initial state, (2) the final pressure in kpa.
Answers: 3
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