Answer:
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Explanation:
Given that; The average grain diameter of an aluminum alloy is 14 mu m with a strength of 185 MPa. The same alloy with an average grain diameter of 50 mu m has a strength of 140 MPa. (a) Determine the constants for the Hall-Patch equation for this alloy, (b) How much more should you reduce the grain size if you desired a strength of 220 MPa
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Answer:
Maybe your answer is B
Answer:
B
Explanation:
Keep only what is used. Remove all unnecessary items. Red tag these items for review.
Answer:
The generator delivers current of 500.11 A
Explanation:
Given the data in the question;
mechanical energy delivered to the generator = 1500 hp
efficiency η = 80.0 %
terminal potential difference of the generator = 1790 V
we know that;
1 hp = 746 W
so
the mechanical energy delivered to the generator will be
Generator Input = ( 1500 × 746 )W = 1119000 W
So the generator output will be;
Generator Output = Generator Input × η
we substitute
Generator Output = 1119000 W × 80.0 %
Generator Output = 1119000 W × 0.8
Generator Output = 895200 W
So the Current will be;
= Generator Output / terminal potential difference of the generator
we substitute
= 895200 W / 1790 V
= 500.11 A
Therefore, The generator delivers current of 500.11 A
Answer:
a)True
Explanation:
Yes we can be measured Poisson ratio by using experimental tests.Poisson ratio is a property of material.Poisson ratio is used to predict stresses in the materials.It values ranges from 0 to 1.By using different type of test Poisson ratio can be measured.The most frequently method to measure Poisson ratio by using the strain measuring devices.