Answer:
Zero.
Explanation:
Lets take velocity V is given as in 2 dimensional flow
V=u i +v j
V=f(x,y)
u=f(x,y)
v=f(x,y)
Rotational ability ω given as
If
ω=0 ,then flow will be irrotational.
ω ≠0 ,then flow will be rotational.
So we can say that , ω will be zero every where for irrotational two dimensional flow .
Answer:
P=- 88.41 KW
Negative sign indicates that power is given to the system.
Explanation:
Given that
P₂=500 KPa
T₂=130°C
V₂=100 m/s
mass flow rate ,m= 0.8 kg/s
Lets take inlet condition for air
T₁=25°C
P₁=100 KPa
V₁=0 m/s
We know that
Heat capacity for air Cp=1.005 KJ/kg.k
We know that for air change in enthalpy only depends only on temperature
Now from first law for open system
W=-110.52 KJ/kg
Shaft power P = m .W
P = -110.52 x 0.8
P=- 88.41 KW
Negative sign indicates that power is given to the system.
Answer: hello your question is incomplete attached below is the complete question
answer : Ac = 5° , A = 2.5°
Explanation:
Bandgap energy for material A = 0.90 eV
Bandgap energy for material B = 1.10 eV
<u>Calculate the ratio of ni for Material B to Material B </u>
Total derivation ( d ) = d1 + d2
d = A ( μ
- 1 ) + A
( μ
- 1 ) ---- ( 1 )
where : d = 1° , μ = 1.5 , μ
= 1.6
Input values into equation 1 above
1° = 0.5Ac + 0.6Af ---- ( 2 )
also d = d1 [ 1 - w/ w1 ] ------ ( 3 )
∴ d = Ac ( μ - 1 ) ( 1 - w/w1 )
1° = Ac ( 1.5 - 1 ) ( 1 - 0.06/0.1 ) --- ( 4 )
resolving equation ( 4 )
Ac = 5°
resolving equation ( 2 )
A = 2.5°
