Answer:
Explanation:
Find the temperature at exit of compressor
Find the work done by the compressor
Find the actual workdone by the compressor
Find the temperature at exit of the turbine
Find the actual workdone by the turbine
Find the temperature of the regeneration
Find the heat supplied
Find the thermal efficiency
60.4%
Find the mass flow rate
Find the actual workdone by the compressor
Find the actual workdone by the turbine
Find the temperature of the compressor exit
Find the temperature at the turbine exit
Find the temperature of regeneration
I think because if you’ve already turned it in they might as well grade asap instead of waiting
Answer:
big bang
Explanation:
the universe began from big bang
Answer:
Revoked
Explanation:
Your driver license will be revoked if you race another driver on a public road, commit a felony using a motor vehicle, or are found guilty of reckless driving three times in one year.
Answer:
B A and C
Explanation:
Given:
Specimen σ
σ
A +450 -150
B +300 -300
C +500 -200
Solution:
Compute the mean stress
σ
= (σ + σ)/2
σ
= (450 + (-150)) / 2
= (450 - 150) / 2
= 300/2
σ = 150 MPa
σ
= (300 + (-300))/2
= (300 - 300) / 2
= 0/2
σ = 0 MPa
σ
= (500 + (-200))/2
= (500 - 200) / 2
= 300/2
σ = 150 MPa
Compute stress amplitude:
σ
= (σ - σ)/2
σ
= (450 - (-150)) / 2
= (450 + 150) / 2
= 600/2
σ = 300 MPa
σ
= (300- (-300)) / 2
= (300 + 300) / 2
= 600/2
σ = 300 MPa
σ
= (500 - (-200))/2
= (500 + 200) / 2
= 700 / 2
σ = 350 MPa
From the above results it is concluded that the longest fatigue lifetime is of specimen B because it has the minimum mean stress.
Next, the specimen A has the fatigue lifetime which is shorter than B but longer than specimen C.
In the last comes specimen C which has the shortest fatigue lifetime because it has the higher mean stress and highest stress amplitude.
