Q.1 A 20 cm x 10 cm venturimeter is provided in a vertical pipe carrying water flowing in the upward direction. A differential mercury manometer connected to the inlet and throat gives a reading of 200 mm. Find the rate of flow. Assume C = 0.98 (R.G.P.V., Dec. 2013)
![](https://i0.wp.com/mechanic37.com/wp-content/uploads/2020/09/fm3.jpg?resize=720%2C1038&ssl=1)
![](https://i0.wp.com/mechanic37.com/wp-content/uploads/2020/09/fm.jpeg?resize=580%2C789&ssl=1)
Q.2 A trapezoidal channel 2 m wide at bottom and 1.5 m deep has side slopes 1 : 1. Determine (i) Total pressure (ii) Centre of pressure on vertical gate closing the channel when it is full of water.
![](https://i0.wp.com/mechanic37.com/wp-content/uploads/2020/09/fm4.jpeg?resize=720%2C1003&ssl=1)
![](https://i0.wp.com/mechanic37.com/wp-content/uploads/2020/09/fm5.jpeg?resize=720%2C1011&ssl=1)
![](https://i0.wp.com/mechanic37.com/wp-content/uploads/2020/09/fm6.jpeg?resize=720%2C1051&ssl=1)
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