Answer:
a) 0.84
b) 0.643
c) 0.931
Explanation:
Given:
The complete missing question is as follows.
" The maintenance firm has gathered the following information regarding the failure mechanism for 100 air conditioning systems:
Evidence of Gas Leaks
Yes No
Evidence of Electrical Failure Yes 54 4
No 30 12
Find:
a)The failure involves a gas leak
b)That there is evidence of electrical failure given that there was a gas leak.
c)That there is evidence of a gas leak given that there is evidence of electrical failure.
Solution:
"Refer to the attachment for the solution"
Answer:
5.833
Explanation:
Coefficient of Perfomance (COP) is the ratio of refrigeration effect to power input.
where RE is refrigeration effect and P is power input
Here, the power input is given as 30 kW
We also know that 1 ton cooling is equivalent to 3.5 kW hence for 50 tons, RE=50*3.5=175 kW
Now the
Answer:
8 mm
Explanation:
Given:
Diameter, D = 800 mm
Pressure, P = 2 N/mm²
Permissible tensile stress, σ = 100 N/mm²
Now,
for the pipes, we have the relation as:
where, t is the thickness
on substituting the respective values, we get
or
t = 8 mm
Hence, the minimum thickness of pipe is 8 mm
Answer:
The answer is below
Explanation:
a) The weight of the combined system is the sum of the weight of the water and the weight of the tank
b) Since the weight of a system can be divided into smaller portions, hence weight is an extensive property.
c) When analyzing the acceleration of gases as they flow through a nozzle, the geometry of the nozzle which is an open system can be chosen as our system.
d) Given that:
