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Alenkasestr [34]
3 years ago
5

A fluid should be changed a. when its viscosity changes b. when it becomes contaminated c. at operating temperature d. when its

acidity increases e. all of the above
Engineering
1 answer:
katovenus [111]3 years ago
8 0

Answer:

e.All of the above

Explanation:

A fluid should be change

a.When its acidity increase

b.When its become contaminated

c.At operating temperature

Generally fluid is used in fluid power.Fluid power means transmission of power by using pressurized fluids.

Fluid power works on Pascal's and Bernoulli law.

From the above option we can say that all option is right for fluid  .

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(C) ln [Bi]

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3 0
3 years ago
Read 2 more answers
A cold air standard gas turbine engine with a thermal efficiency of 56.9 % has a minimum pressure of 100 kP
Aleks04 [339]

Answer:

a) 5.2 kPa

b) 49.3%

Explanation:

Given data:

Thermal efficiency ( л ) = 56.9% = 0.569

minimum pressure ( P1 ) = 100 kpa

<u>a) Determine the pressure at inlet to expansion process</u>

P2 = ?

r = 1.4

efficiency = 1 - [ 1 / (rp)\frac{r-1}{r} ]

   0.569   = 1 - [ 1 / (rp)^0.4/1.4

1 - 0.569  = 1 / (rp)^0.285

∴ (rp)^0.285 = 0.431

rp = 0.0522

note : rp = P2 / P1

therefore P2 = rp * P1 = 0.0522 * 100 kpa

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b) Thermal efficiency

Л = 1 - [ 1 / ( 10.9 )^0.285 ]

   = 0.493 = 49.3%

4 0
3 years ago
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