Fluid Mechanics MCQs
Practice free Fluid Mechanics multiple-choice questions with instant answer feedback and step-by-step solutions. Click an option to check yourself, reveal the full explanation, and work through all 815 questions — no login required.
Question 406medium
Which of the following flow measuring devices is an area meter?
Question 407medium
For a given fluid flow rate, which of the following incurs maximum head loss?
Question 408hard
A rotameter through which air at room temperature and atmospheric pressure is flowing gives a certain reading for a flow rate of 100 cc/sec. If helium (molecular weight 4) is used and rotameter shows the same reading, the flow rate (cc/sec) is
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Question 409hard
A weir is used to measure the large water discharge rate from a river or from an open channel. A weir is not of __________ shape.
Question 410hard
A stream tube is that, which has __________ cross-section entirely bounded by stream lines.
Question 411medium
When the pipe Reynold's number is 6000, the flow is generally
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Question 412easy
Which of the following is a dimensionless parameter?
Question 413hard
For very low pressure and high discharge rate, the compressor used is a/an __________ compressor.
Question 414medium
Capacity of a hydraulic accumulator is defined in terms of maximum