Q. _______ is provided at the entrance of suction pipe during centrifugal pump installation.

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Q. Which part of centrifugal well pumps act as a self priming device?

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Q. Which part of centrifugal well pumps prevents the back flow through the pump?

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Q. __________ is defined as the speed at which a pump will discharge a unit flow under a unit head at maximum efficiency.

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Q. The unit of specific speed is _____________

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Q. The specific speed of the pump is 8000. What is the type of pump?

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Q. The plot of total dynamic head and discharge of a pump is called ____________

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Q. _______ is the point of intersection of system head curve with the characteristic curve of the pump.

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Q. Which of the following is not included in the friction head?

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Q. When the pumps are in parallel operation?

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Q. When the pumps are in series operation?

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Q. The efficiency of the pump at half load is ____________

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Q. The efficiency of the pump at quarter load is ____________

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Q. The installed capacity of the pump does not depend on which of the following?

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Q. If the diameter of pumping mains decreases, then the total dynamic head will increase.

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Q. Which of the following is incorrect regarding cast iron pipes?

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Q. Horizontally cast iron pipes are called _________

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Q. Mcwane pipes are ___ stronger in tension than Pit cast pipes.

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Q. The enlarged end of a cast iron pipe is called ________

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Q. What is the quantity of lead required for a 15cm diameter cast iron pipe?

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