Answer:
YES
Explanation:
Entropy is an extensive property of the system entropy change that value of entropy change can be determined for any process between the states whether reversible or not. i have attached the formula to calculate entropy change which is independent of whether the system is reversible or not and can be determined for any process.
Answer:
(d) Spheroidizing
Explanation:
Spheroidizing
This is the heat treatment process for steel which having carbon percentage more than 0.8 %.As we know that a hard and brittle material is having carbon percentage more than 0.8 %.That is why this process is suitable for the hard materials.
In this process a hard and brittle materials convert into soft and ductile after this it improve the machine ability as well as improve the tool life.
In this process grain become spheroidal and these grains are ductile.
Answer:
The required heat flux = 12682.268 W/m²
Explanation:
From the given information:
The initial = 25°C
The final = 75°C
The volume of the fluid = 0.2 m/s
The diameter of the steel tube = 12.7 mm = 0.0127 m
The fluid properties for density 
= 1000 kg/m³
The mass flow rate of the fluid can be calculated as:
To estimate the amount of the heat by using the expression:
q = 0.0253 × 4000(75-25)
q = 101.2 (50)
q = 5060 W
Finally, the required heat of the flux is determined by using the formula:
q" = 12682.268 W/m²
The required heat flux = 12682.268 W/m²
Answer:
a) V_2 = 82.1 m/s
b) m = 0.298 Kg/s
Explanation:
from A-11 to A-13 we have the following data
P_1 = 600 kpa
V_1 = 0.033925 m^3/kg
h_1 = 262.52 kJ/kg
P_2 = 700 kpa
V_2 = 0.0313 m^3/kg
T_2 = 40°C = 313K
h_2 = 278.66 kJ/kg
Now, from the conversation of mass,
A_2*V_2/u_2 = A_1*V_1/u_1
V_2 = A_1/A_2*u_2/u_1*V_1
V_2 = A_1/1.8*A_1 * 0.0313 /0.033925*160
V_2 = 82.1 m/s
now from the energy balance equation
E_in = E_out
Q_in + m(h_1 + V_1^2/2) = m(h_2 + V_2^2/2)
m = 0.298 Kg/s
