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## Hydraulics & Hydraulic Machinery Important Questions Pdf file – HHM Imp Qusts

Please find the attached pdf file of Hydraulics & Hydraulic Machinery Important Questions Bank – HHM Imp Qusts

Link – HHM Question Bank

**UNIT – I**

- What do you understand by flow in open channel?
- Differentiate between critical , sub critical and super critical flow in open channel.
- Explain the terms : i) rapidly varying flow ii)gradually varying flow.

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**UNIT – II**

- Define the terms dimensional analysis and model analysis.
- What do you mean by fundamental and derived units ?give examples
- Explain the term “dimensionally homogeneous equation”.

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**UNIT – III**

- Define the term impact of jets
- Obtain an expression for the force exerted by a jet of water on a fixed vertical plate in the direction of jet.
- Water is flowing through a pipe at the end of which a nozzle is fitted .the diameter of the nozzle 100mm and the head of water at the centre of nozzle is 100 m .find the force exerted by the jet of water on a fixed vertical plate .the coefficient of velocity is given as 0.95.

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**UNIT – IV**

- What is meant by turbine?
- Discuss about following efficiencies : i)hydraulic efficiency ii) mechanical efficiency iii)volumetric efficiency iv)over all efficiency.
- Discuss about classification of hydraulic turbines.

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**UNIT – V**

- What is meant by pump and discuss about pump installation?
- Discuss about classification of pumps?
- Define the following :i) suction head ii) delivery head iii)static head

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