Answer:
Explanation:
Heat engine
Heat engine is a device which produce work while consuming some amount of energy .This engine works in cycle.In other words we can say that Heat engine is a device which covert thermal or chemical energy in to mechanical energy and after that this mechanical energy can be use for producing mechanical work.
Heat engine takes heat from high temperature and rejects heat to lower temperature and producing work.
We know that efficiency given as
From diagram we can say that
So efficiency
Answer:
70,900
Explanation:
Given :
True stress (psi) _____ True strain (psi)
48400 ______________ 0.11
60400 ______________ 0.19
Using ratio simplification :
Let :
s = True stress ; t = true strain
s1 = 48400
s2 = 60400
t1 = 0.11
t2 = 0.19
True stress, s0 ; needed to produce a True plastic strain, tp = 0.26
(s0 - s1) / (s2 - s1) = (tp - t1) / (t2 - t1)
(s0 - 48400)/(60400 - 48400) = (0.26 - 0.11)/(0.19 - 0.11)
(s0 - 48400)/12000 = 0.15/0.08
Cross multiply :
0.08(s0 - 48400) = 0.15 * 12000
0.08s0 - 3872 = 1800
0.08s0 = 1800 + 3872
0.08s0 = 5672
s0 = 5762 / 0.08
s0 = 70,900
The true stress required to produce a true plastic strain of 0.26 is 70,900
Answer:
Air is a gas
Explanation:
i think. beavuse it cant be a liqued or a solid. i dont think a plasma. i would answer gas
Answer:
The pumping power per ft of pipe length required to maintain this flow at the specified rate 0.370 Watts
Explanation:
See calculation attached.
- First obtain the properties of water at 60⁰F. Density of water, dynamic viscosity, roughness value of copper tubing.
- Calculate the cross-sectional flow area.
- Calculate the average velocity of water in the copper tubes.
- Calculate the frictional factor for the copper tubing for turbulent flow using Colebrook equation.
- Calculate the pressure drop in the copper tubes.
- Then finally calculate the power required for pumping.
