Q. In “two way ball valves” the flow can be switched and controlled by rotating the ball in 90 degrees.

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Q. In “Butterfly valves” the flow can be switched and controlled by rotating the obstructer in 90 degrees.

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Q. Which type of valves contains tapered cylindrical obstructer?

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Q. What is the velocity of water from a cylindrical valve if the cylindrical valve has a diameter of 10 cm and rate of flow of water in Litres per second is 157 L/s?

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Q. Which type of valves contains a flat disc obstructer?

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Q. How many ports does a 3 way valve have?

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Q. What is the percentage change in amount of water flowing through a valve in one hour when originally the rate of flow from the valve was 10 m³/hr which was reduced to 8 m³/hr?

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Q. How many exit ports does a 2 way valve have?

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Q. Pneumatic actuator based valves use air to generate rotational force.

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Q. What is the rate of flow of water from a cylindrical valve if the cylindrical valve has a diameter of 10 cm and velocity of water is 10m/s?

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Q. What is the final amount of water flowing through a valve in one hour when originally the rate of flow from the valve was 10 m³/hr which was reduced by 80%?

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