b)

12 a)

b)

13 a)

14 ஐ

03000 ME364052101

Explain the variation of stage loading coefficient y with flow coefficient in
an axial flow compressor.
Draw the velocity triangles of an axial flow turbines for degree of reaction R=0,
R=1, R=0.5 respectively.
Name the sources of losses in an axial turbine rotor
Derive the expression for Degree of Reaction for axial turbine stage

2

R=1- 2 (यय - 11201)

Hence derive ४ = 2)1 - ९ + 4 811 61 )
Comment on the utility of this equation

The rotor of a 90° IFR turbine, which is designed to operate at the nominal
condition, is 23.76 cm in diameter and rotates at 38,140 rev/min. At the design
point, the absolute flow angle at rotor entry is 72°. The rotor mean exit diameter
is one-half of the rotor diameter and the relative velocity at rotor exit is twice
the relative velocity at rotor inlet. Draw the velocity triangle. Determine the
contributions of each component of energy transfer in the rotor to the specific
work

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