314) The pressure at a point 4 m below the free surface of water is

315) A structure used to dam up a stream or river over which the water flows is called

316) The coefficient of discharge for an external mouthpiece depends upon

317) The highest efficiency is obtained with a channel of __________ section.

318) A vessel of 4 m³ contains an oil which weighs 30 kN. The specific weight of the oil is