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Test: Net Positive Suction Head - Civil Engineering (CE) MCQ


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10 Questions MCQ Test Fluid Mechanics for Civil Engineering - Test: Net Positive Suction Head

Test: Net Positive Suction Head for Civil Engineering (CE) 2024 is part of Fluid Mechanics for Civil Engineering preparation. The Test: Net Positive Suction Head questions and answers have been prepared according to the Civil Engineering (CE) exam syllabus.The Test: Net Positive Suction Head MCQs are made for Civil Engineering (CE) 2024 Exam. Find important definitions, questions, notes, meanings, examples, exercises, MCQs and online tests for Test: Net Positive Suction Head below.
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Test: Net Positive Suction Head - Question 1

In hydraulic head, NPSH is used for the analysis of __________

Detailed Solution for Test: Net Positive Suction Head - Question 1

In hydraulic head, net positive circuit is used for the analysis of cavitation. It determines the cavitation present in the centrifugal pump by different methods.

Test: Net Positive Suction Head - Question 2

What can NPSH be used to determine _______

Detailed Solution for Test: Net Positive Suction Head - Question 2

NPSH is used to determine the cavitation in pumps. NPSH is defined as the difference suction pressure and vapour pressure. It is called as the net positive suction head.

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Test: Net Positive Suction Head - Question 3

What is the dimension for Darcy’s friction factor?

Detailed Solution for Test: Net Positive Suction Head - Question 3

Darcy’s friction factor is dimensionless. It is one of the major applications in Fluid dynamics. The energy usage in pumping installation is determined by Friction characteristics. Thus, it is dimensionless.

Test: Net Positive Suction Head - Question 4

With the increase in cavitation, the drag coefficient of the impeller ______

Detailed Solution for Test: Net Positive Suction Head - Question 4

With the increase in cavitation, the drag coefficient of the impeller increases. When the flow output is higher, impellers are connected in parallel. The impeller is mounted on one shaft or different shaft.

Test: Net Positive Suction Head - Question 5

When the NPSH is low, it leads to ________

Detailed Solution for Test: Net Positive Suction Head - Question 5

When the NPSH is low, it leads to cavitation. Cavitation is one of the major drawbacks that are seen in a centrifugal pump. There are various other problems as well. But, cavitation is due to low NPSH.

Test: Net Positive Suction Head - Question 6

NPSHr is determined by using ______

Detailed Solution for Test: Net Positive Suction Head - Question 6

NPSHr of a pump can be determined by using Pumplinx. The full form of NPSH is Net positive suction head. The head added by the pump is a sum of static lift.

Test: Net Positive Suction Head - Question 7

If we use two lower capacity pumps in parallel, cavitation ________

Detailed Solution for Test: Net Positive Suction Head - Question 7

If we use two lower capacity pumps in parallel, cavitation decreases. It happens when the NPSh value is bought in its safety limit.

Test: Net Positive Suction Head - Question 8

NPSH is the difference between _______

Detailed Solution for Test: Net Positive Suction Head - Question 8

NPSH is defined as the difference suction pressure and vapour pressure. It is called as the net positive suction head.

Test: Net Positive Suction Head - Question 9

The measure of how close the fluid is to the given point is called _________

Detailed Solution for Test: Net Positive Suction Head - Question 9

The measure of how close the fluid is to the given point is called flashing. It is one of the major methods in the NPSH to determine the cavitation.

Test: Net Positive Suction Head - Question 10

NPSH is relevant ________

Detailed Solution for Test: Net Positive Suction Head - Question 10

NPSH is relevant inside the pumps. hydraulic head, net positive circuit is used for the analysis of cavitation. It determines the cavitation present in the centrifugal pump by different methods.

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