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Previous year question hub

Pipe-flow Development and Head Losses - Internal Flows - Engineering Sciences Previous Year Questions

Practice Pipe-flow Development and Head Losses - Internal Flows - Engineering Sciences previous year questions organised from real papers, with year-wise coverage and clear topic navigation.

20Papers
20Years
85Questions
1Topics

Pipe-flow Development and Head Losses question pattern

Every graph below is calculated only from this selection.

Questions by year

Year-wise coverage for Pipe-flow Development and Head Losses. Each bar uses a separate theme-derived color.

Difficulty distribution

How the classified questions are distributed by difficulty.

Easy 42 49.4%
Medium 41 48.2%
Hard 2 2.4%

Question type distribution

MCQ, numerical, multiple-select and other formats found in these papers.

MCQ 46 54.1%
Numerical Answer Type (NAT) 36 42.4%
Fill in the blanks 2 2.4%
MSQ 1 1.2%

Subject weightage

Top subjects by unique question coverage.

Engineering Sciences
85 Qs

Most asked topics

Top topics across the included previous year papers.

Internal Flows
85 Qs

Subtopic coverage

Top subtopics inside this exact selection.

Pipe-flow Development and Head Losses
85 Qs

Paper coverage

Question coverage for the most populated papers. Every active PYP paper remains listed below.

Engineering Sciences (XE) 2026
6 Qs
Engineering Sciences (XE) 2025
6 Qs
Engineering Sciences (XE) 2024
5 Qs
Engineering Sciences (XE) 2023
2 Qs
Engineering Sciences (XE) 2022
4 Qs
Engineering Sciences (XE) 2021
7 Qs
Engineering Sciences (XE) 2020
3 Qs
Engineering Sciences (XE) 2019
4 Qs
Engineering Sciences (XE) 2018
5 Qs
Engineering Sciences (XE) 2017
5 Qs
Engineering Sciences (XE) 2016
3 Qs
Engineering Sciences (XE) 2015
5 Qs
Engineering Sciences (XE) 2014
5 Qs
Engineering Sciences (XE) 2013
3 Qs
Engineering Sciences (XE) 2012
3 Qs
Engineering Sciences (XE) 2011
3 Qs
Engineering Sciences (XE) 2010
2 Qs
Engineering Sciences (XE) 2009
3 Qs
Engineering Sciences (XE) 2008
7 Qs
Engineering Sciences (XE) 2007
4 Qs

Included previous year papers

Newest papers appear first. Sort by year, question coverage or name.

PaperYear / sessionQuestions in this viewOpen
Engineering Sciences (XE) 202620266View paper
Engineering Sciences (XE) 202520256View paper
Engineering Sciences (XE) 202420245View paper
Engineering Sciences (XE) 202320232View paper
Engineering Sciences (XE) 202220224View paper
Engineering Sciences (XE) 202120217View paper
Engineering Sciences (XE) 202020203View paper
Engineering Sciences (XE) 201920194View paper
Engineering Sciences (XE) 201820185View paper
Engineering Sciences (XE) 201720175View paper
Engineering Sciences (XE) 201620163View paper
Engineering Sciences (XE) 201520155View paper
Engineering Sciences (XE) 201420145View paper
Engineering Sciences (XE) 201320133View paper
Engineering Sciences (XE) 201220123View paper
Engineering Sciences (XE) 201120113View paper
Engineering Sciences (XE) 201020102View paper
Engineering Sciences (XE) 200920093View paper
Engineering Sciences (XE) 200820087View paper
Engineering Sciences (XE) 200720074View paper

All Pipe-flow Development and Head Losses previous year questions

Practice every matching question in batches of 20, with every available option.

1
2007 · Engineering Sciences · Internal Flows · Pipe-flow Development and Head Losses
Engineering Sciences (XE) 2007
Water flows steadily through a smooth circular tube of 5 cm diameter at a flow rate of π kg/s. Take viscosity μ = 0.001 Ns/m² and density ρ = 1000 kg/m³. The Darcy friction factor is given as: f_D = 64/Re_d for fully developed laminar flow and f_D = 0.316 Re_d^{-0.25} for fully developed turbulent flow. The approximate pressure drop per unit length in the fully developed region of the tube is
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2
2007 · Engineering Sciences · Internal Flows · Pipe-flow Development and Head Losses
Engineering Sciences (XE) 2007
An orifice plate of 60 mm diameter and discharge coefficient 0.6 is used for measuring the flow rate of air (ρ = 1.2 kg/m³, μ = 1.8×10⁻⁵ kg m⁻¹ s⁻¹) through a pipe of 100 mm diameter. A manometer (with water as the working liquid) connected across the orifice plate reads 180 mm. The air flow rate is approximately equal to
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3
2007 · Engineering Sciences · Internal Flows · Pipe-flow Development and Head Losses
Engineering Sciences (XE) 2007
The magnitude of shear stress on the wall ( \( {\tau _{wall}} \) ) is
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4
2007 · Engineering Sciences · Internal Flows · Pipe-flow Development and Head Losses
Engineering Sciences (XE) 2007
The local friction factor \( {C_f} = \frac{{{\tau _{wall}}}}{{0.5\rho u_m^2}} \), with \( \gamma = - \frac{{dp}}{{dx}} \) is given by
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5
2008 · Engineering Sciences · Internal Flows · Pipe-flow Development and Head Losses
Engineering Sciences (XE) 2008

The Darcy-Weisbach equation for head loss is valid

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6
2008 · Engineering Sciences · Internal Flows · Pipe-flow Development and Head Losses
Engineering Sciences (XE) 2008

Air flows in a square duct of side 10 cm. At the entrance, the velocity is uniform at 10 m/s and the boundary layer thickness is negligible. At the exit, the displacement thickness is 5 mm (on each wall). The velocity outside the boundary layers at the exit is:

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7
2008 · Engineering Sciences · Internal Flows · Pipe-flow Development and Head Losses
Engineering Sciences (XE) 2008
What would be the discharge through the pipe?

Question diagram

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8
2008 · Engineering Sciences · Internal Flows · Pipe-flow Development and Head Losses
Engineering Sciences (XE) 2008
If it is desired to increase the discharge, the following four options are available:
1. Increase the pipe length, keeping everything else the same
2. Increase the pipe diameter, keeping everything else the same
3. Add a valve at the end of the pipe, keeping everything else the same
4. Replace the sharp entrance by a rounded entrance, keeping everything else the same
Only two of these options serve our purpose. Which are they?
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9
2008 · Engineering Sciences · Internal Flows · Pipe-flow Development and Head Losses
Engineering Sciences (XE) 2008
The total head developed by the pump (in metres of water) is:

Question diagram

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10
2008 · Engineering Sciences · Internal Flows · Pipe-flow Development and Head Losses
Engineering Sciences (XE) 2008

A liquid having density ρ and viscosity μ flows under laminar condition through a circular pipe having diameter D and length L against a pressure drop of ΔP. Volume flow rate of the liquid through the pipe will be proportional to

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11
2008 · Engineering Sciences · Internal Flows · Pipe-flow Development and Head Losses
Engineering Sciences (XE) 2008
Water (dynamic viscosity \(\mu = 0.001\) N s/m\(^2\)) flows under pressure through a pipe of 1 cm diameter at a velocity of 1 cm/s. What would be the head loss per km length of the pipe?
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12
2009 · Engineering Sciences · Internal Flows · Pipe-flow Development and Head Losses
Engineering Sciences (XE) 2009
A 40 cm cubical block slides on oil (viscosity = 0.80 Pa.s), over a large plane horizontal surface. If the oil film between the block and the surface has a uniform thickness of 0.4 mm, what will be the force required to drag the block at 4 m/s ? Ignore the end effects and treat the flow as two dimensional.
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13
2009 · Engineering Sciences · Internal Flows · Pipe-flow Development and Head Losses
Engineering Sciences (XE) 2009

Consider a fully developed laminar flow in a circular pipe. If the diameter of the pipe is halved while the flow rate and length of the pipe are kept constant, the head loss increases by a factor of

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14
2009 · Engineering Sciences · Internal Flows · Pipe-flow Development and Head Losses
Engineering Sciences (XE) 2009
Determine the correctness or otherwise of the following Assertion [a] and the Reason [r] :
Assertion [a] : The coefficient of discharge of orifice flow meter is less than that of venturi meter.
Reason [r] : Orifice flow meter is a differential pressure device.
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15
2010 · Engineering Sciences · Internal Flows · Pipe-flow Development and Head Losses
Engineering Sciences (XE) 2010

The diverging limb of a venturimeter is kept longer than the converging limb to

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16
2010 · Engineering Sciences · Internal Flows · Pipe-flow Development and Head Losses
Engineering Sciences (XE) 2010
A 60% efficient pump is installed in a pipe of diameter 20 cm to lift water from a sump to an overhead tank at a discharge rate of \( \pi/100 \) m³/s. Free surface level in the overhead tank is 20 m higher than the free surface level in the sump. The all-inclusive head losses (not including the lift) in the suction and delivery sides of the pump are 2 times and 28 times the velocity head, respectively.
The power (W) supplied to the pump is
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17
2011 · Engineering Sciences · Internal Flows · Pipe-flow Development and Head Losses
Engineering Sciences (XE) 2011
A sugar syrup (density = 1040 kg/m³ and viscosity = 1600 × 10⁻⁶ Pa.s) is required to be pumped in to a tank (1.5 m diameter and 3 m height) by a 3 cm inside diameter pipe. If the liquid is required to flow under laminar flow conditions, the minimum time to fill the tank with the syrup will be
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18
2011 · Engineering Sciences · Internal Flows · Pipe-flow Development and Head Losses
Engineering Sciences (XE) 2011
Consider fully developed flow of water in a pipe of diameter 2 cm. The average velocity of the flow is 2 m/s. The viscosity of the water is 10⁻³ kg/m-s and the density is 1000 kg/m³. The friction factor can be calculated using f = 64/Re for laminar flows and f = 0.3164/Re⁰.²⁵ for turbulent flows. The pressure drop over a length of 0.5 m is
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19
2011 · Engineering Sciences · Internal Flows · Pipe-flow Development and Head Losses
Engineering Sciences (XE) 2011
Consider a steady, fully developed flow in a horizontal pipe of diameter D. Over a section of length L of this pipe, a pressure drop of Δp is observed. The average wall shear stress over this section is
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20
2012 · Engineering Sciences · Internal Flows · Pipe-flow Development and Head Losses
Engineering Sciences (XE) 2012
In the case of a fully developed flow through a pipe, the shear stress at the centerline is
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Showing 20 of 85 questions