Steam and Gas Turbines Questions and Answers – Losses in Impulse Blade Passages

This set of Steam and Gas Turbines Multiple Choice Questions & Answers (MCQs) focuses on “Losses in Impulse Blade Passages”.

1. ____________ is developed when working fluid is passed through blade passage.
a) Internal heat loss
b) External heat loss
c) Heat loss
d) None of the mentioned
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2. Kinetic energy of working fluid is _________ kinetic energy of case lossless flow.
a) Equal to
b) Lesser than
c) Greater than
d) Depends on the situation
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3. Ratio of actual velocity to velocity of case lossless flow is called as _______
a) Velocity coefficient
b) Velocity gradient
c) No specific ratio
d) None of the mentioned
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4. Difference between actual enthalpy of working fluid to case enthalpy of isoentropic flow is called as _______
a) Case lossless flow
b) Entropy change
c) Losses
d) None of the mentioned
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5. The losses occurred due to enthalpy changes is caused due to _________
a) Pressure difference
b) Friction
c) Temperature difference
d) None of the mentioned
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6. Velocity coefficient is applicable for __________
a) Parallel flow passage
b) Counter flow passage
c) All types of flow passages
d) None of the mentioned
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7. Velocity coefficient can be applied for ___________ flow passage.
a) convergent
b) divergent
c) depends on
d) none of the mentioned
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8. Velocity coefficient can be applied for __________ blade passage.
a) none
b) impulse
c) reaction
d) any
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9. Blade profile losses for a diffuser blade depends on ____________
a) Enthalpy
b) Entropy
c) Kinetic energy
d) None of the mentioned
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10. Blade profile losses are ____________ losses of the stages at turbomachine.
a) Greater
b) Smaller
c) Equal
d) None of the mentioned
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Sanfoundry Global Education & Learning Series – Steam and Gas Turbines.

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