An operating system is the software that a computer's basic functions such as scheduling test applications and controlling
A non-trivial or predictable classification system is preferred in systematics for the reason that, it is <span> repeatable, objective, testable and </span>predictable. Predictable in a way that you <span>get more out of it than what you put in it. Hope this answers your question.</span>
When there is a need to make an unpopular decision such that your boss is asking to implement or do something but you were confused on his first instructions. It either for to proceed based on your initial evaluation. Then, you decided to proceed but the result is not your boss was expecting. The outcome was unsuccessful. Your boss nagged on you, what is the best thing you can do is to accept your mistake, learn from it and avoid recurrence of the same problem.
Given Information:
Qin = 8*10 = 80 W
Win = 25 W
Temperature = T2-T1 = 10°C
Required Information:
(a) flow rate of the air = m = ?
(b) fraction of the temperature rise of air = f = ?
Answer:
(a) flow rate of the air m = 0.01044 kg/s
(b) fraction of the temperature rise of air f = 23.8 %
Solution:
(a) The flow rate of the air that fan needs to deliver can be found by
Where the value of specific heat of air is 1005 j/kg.C
m = (80 + 25)/1005*10
m = 0.01044 kg/s
(b) fraction of the temperature rise of air due to fan
ΔT = Q/mCp
ΔT = 25/0.01044*1005
ΔT = 2.38°C
So the fan causes a temperature rise of 2.38°C
f = ΔT/T2-T1
f = 2.38/10
f = 0.238 = 23.8 %