Answer:
a)
, b)
, c) Irreversible.
Explanation:
a) The power input required by the refrigerator is:



b) The Coefficient of Performance of the refrigerator is:



c) The maximum ideal Coefficient of Performance of the refrigeration is given by the inverse Carnot's Cycle:



The refrigeration cycle is irreversible, as
.
Answer:
The minimum value of wall thickness t=3.63 mm.
Explanation:
Given:
D=200 mm
P=4 MPa
t= Wall thickness
maximum shear stress=27.5 MPa
We know that
hoop stress 
Longitudinal stress
So maximum shear tress in plane

Now by putting the value

So t=3.36 mm
The minimum value of wall thickness t=3.63 mm.
Answer:
0.05 J/K
Explanation:
Given data in question
heat (Q) = 10 J
temperature (T) = 200 K
to find out
the change in entropy of the system
Solution
we will solve this by the entropy change equation
i.e ΔS = ΔQ/T ...................1
put the value of heat Q and Temperature T in equation 1
ΔS is the enthalpy change and T is the temperature
so ΔS = 10/200
ΔS = 0.05 J/K
Answer:
<h2>False </h2>
Explanation:
The noun form of organize is just adding letter r