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GATE 2022 ME: RAC, PPE & IC Engines Quiz - 8

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Question 1

Consider the following statements in respect of impulse steam turbine
1) Blade passages are of constant cross-section.
2) Partial admission of steam is permissible.
3) Axial thrust is only due to change in flow velocity of steam at inlet and outlet of moving blade.
Which of these statement are correct _______?

Question 2

The degree of reaction of an impulse turbine

Question 3

The entry nozzle angle of an elementary Impulse turbine is . For maximal diagram efficiency, calculate the  ratio

Question 4

A 4-row velocity compounded steam turbine develops total 6400 kW. What is the power developed by the last row?

Question 5

Consider the following statements for an incompressible fluid flowing through a convergent-divergent duct
1) The convergent part acts as a nozzle.
2) The divergent part act as a diffuser.
3) The maximum limiting speed of the fluid is the sonic velocity.
Which of these statements are correct?

Question 6

Calculate the work done by of steam when it is made to enter a steam turbine with inlet velocity of  & goes out with exit velocity of .
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