Explanation:
Specific cutting energy:
It the ratio of power required to cut the material to metal removal rate of material.If we take the force required to cut the material is F and velocity of cutting tool is V then cutting power will be the product of force and the cutting tool velocity.
Power P = F x V
Lets take the metal removal rate =MRR
Then the specific energy will be
If we consider that metal removal rate and cutting tool velocity is constant then when we increases the cutting force then specific energy will also increase.
—By the maximum shear stress is then calculated by: where b = 2 (ro − ri) is the effective width of the cross section, Ic = π (ro4 − ri4) / 4 is the centroidal moment of inertia, and A = π (ro2 − ri2) is the area of the cross section.
Answer:
Answer is attached.
Explanation:
A NMOS is a n-channel MOSFET or Metal Oxide
Semiconductor Field Effect Transistor. This type
of transistor might be an enhancement or
depletion type nMOS transistor designed using
layers of Metal-oxide, Silicon-oxide and Silicon
fabricated on a substrate.
Answer:
Ammonia enters the expansion valve of a refrigeration system at a pressure of 10 bar and a temperature of 20 o C and exits at 5.0 bar. The refrigerant undergoes a throttling process. Determine the temperature, in o C, and the quality of the refrigerant at the exit of the expansion valve.
Explanation:
Answer:44.61 KJ
Explanation:
Let h_1,V_1,Z_1 be the initial specific enthalpy,velocity&elevation of the system
and h_2,V_2,Z_2 be the Final specific enthalpy,velocity&elevation of the system
mass(m)=7kg
Applying Steady Flow Energy Equation
![m\left [ h_1+\frac{v_1^2}{2g}+gZ_1\right ]](https://tex.z-dn.net/?f=m%5Cleft%20%5B%20h_1%2B%5Cfrac%7Bv_1%5E2%7D%7B2g%7D%2BgZ_1%5Cright%20%5D)
+Q=![\left [ h_2+\frac{v_2^2}{2g}+gZ_2\right ]](https://tex.z-dn.net/?f=%5Cleft%20%5B%20h_2%2B%5Cfrac%7Bv_2%5E2%7D%7B2g%7D%2BgZ_2%5Cright%20%5D)
+W
substituting values
![7\left [ h_1+\frac{13^{2}}{2g}+gZ_1\right ]+7\times2](https://tex.z-dn.net/?f=7%5Cleft%20%5B%20h_1%2B%5Cfrac%7B13%5E%7B2%7D%7D%7B2g%7D%2BgZ_1%5Cright%20%5D%2B7%5Ctimes2)
= ![\left [ h_2+\frac{23^2}{2g}+gZ_2\right ]](https://tex.z-dn.net/?f=%5Cleft%20%5B%20h_2%2B%5Cfrac%7B23%5E2%7D%7B2g%7D%2BgZ_2%5Cright%20%5D)
+W
W=![7\left [h_1-h_2+\frac{V_1^2-V_2^2}{2000g}+g\frac{\left (Z_1-Z_2 \right )}{1000}\right ]](https://tex.z-dn.net/?f=7%5Cleft%20%5Bh_1-h_2%2B%5Cfrac%7BV_1%5E2-V_2%5E2%7D%7B2000g%7D%2Bg%5Cfrac%7B%5Cleft%20%28Z_1-Z_2%20%5Cright%20%29%7D%7B1000%7D%5Cright%20%5D)
+Q
W=![7\left [4+\frac{13^2-23^2}{2000g}+g\frac{\left (40 \right )}{1000}[\right ]](https://tex.z-dn.net/?f=7%5Cleft%20%5B4%2B%5Cfrac%7B13%5E2-23%5E2%7D%7B2000g%7D%2Bg%5Cfrac%7B%5Cleft%20%2840%20%5Cright%20%29%7D%7B1000%7D%5B%5Cright%20%5D)
+
W=44.61KJ
