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UPSC ESE 2018 Mechanical Engineering Paper

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Question : 114 of 148

Marks: +1, -0

Consider the following statements:
1. The distinguishing features of a radial flow reaction turbine are - (i) only a part of the total head of water is converted into velocity head before it reaches the runner and (ii) the flow through water completely fills all the passages in the runner.
2. Kaplan turbine is essentially a propeller working in reverse, and its blades are so mounted that all the blade angles can be adjusted simultaneously by means of suitable gearing even as the machine is in operation.
3. ipe of gradually increasing cross-sectional area which must be airtight, and under all conditions of operation, its lower end must be submerged below the level of the discharged water in the tailrace.
Which of the above statements are correct?

1 and 2 only
1 and 3 only
2 and 3 only
1, 2 and 3

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