Engineering, 08.09.2020 14:01 hfyyf259
The atmosphere is divided into different layers, each with a different function. The stratosphere contains the ozone (O3).
a) At what distance from earth is the so-called "ozone layer"? (2)
b) What is the function of the ozone layer? (2)
c) What is responsible for the depletion of the ozone layer? (2)
d) What are the various industrial processes are responsible for the depletion of the ozone layer?
Answers: 1
Engineering, 04.07.2019 18:10
Afour cylinder four-stroke in-line engine has a stroke of 160mm, connecting rod length of 150mm, a reciprocating mass of 3kg and its firing order is 1-3-4-2. the spacing between cylinders is 100mm. i. show that the engine is in balance with regard to the primary inertia forces and primary 3. a and secondary inertia couples. li determine the out of balance secondary inertia force ii. propose ways of balancing this out of balance force and discuss the challenges that will arise
Answers: 3
Engineering, 04.07.2019 18:10
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 18:20
Avolume of 2.65 m3 of air in a rigid, insulated container fitted with a paddle wheel is initially at 264 k, 5.6 bar. the air receives 432 kj by work from the paddle wheel. assuming the ideal gas model with cv = 0.71 kj/kg • k, determine for the air the amount of entropy produced, in kj/k
Answers: 2
The atmosphere is divided into different layers, each with a different function. The stratosphere co...
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