kindly write the answer letter too Question 6 Which of the following is correct

Question

kindly write the answer letter too

Question 6 Which of the following is correct about the working principles of axial flow turbomachines? The working fluid enters to the eye and exit radially Axial flow turbomachines can have multiple stages The working fluid always exits the machine at higher pressure than it inters the machine The working fluid enters axially and exit radially Question 7 A thermodynamics process is said to be isentropic if The process is ideal and reversible The process is ideal and adiabatic There is no work done in the process The process is ideal and irreversible Question 8 Which of the following statement is correct about nozzles and diffusers? Diffusers are usually located at the exit of turbines blades Nozzles are usually located at the inlet of compressor blades Nozzles are usually located at the inlet of turbine blades Diffusers are usually located at the inlet of turbines blades Question 9 When the high pressure and high temperature gas flows through the nozzle: The temperature increases The Mach number decreases The Mach number increases The pressure increases

Explanation / Answer

Q:6.ans: D

for the axial flow turbine the fliud enters axially and leaves radially.

Q:7.ans: B

a thermodynamic process is said to be isentropic if the process is ideal and adiabatic.means here the entropy is same. and no heat transfer . isentropic means it is a reversible adiabatic proess.

Q8: ANS : D

the diffusers are usually located at the inlet of the turbine blades.( in the case of centrifugal compressors)

Q 9:ANS :B

for the high pressure and high temperature gases flow through the nozzle the mach number decreases.

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