Home

# In a duct of uniform cross section MCQ

Uniformen Heute bestellen, versandkostenfrei Über 7 Millionen englischsprachige Bücher. Jetzt versandkostenfrei bestellen Circular Cross Section, Flow in Open Channels, Hydraulics, Manning Equation, Manning Roughness Coefficient, MCQ, Multiple Choice Questions, Open Channel Flow, Rectangular Cross Section, Trapezoidal Cross Section, Triangular Cross Section, Uniform Flo D) Pressure rise in a duct due to propagation of supersonic wave through the duct. Q12. The tranverse shear stress acting in a beam of rectangular cross section, subjected to a transverse shear load is (GATE, 2008) A) variable with maximum at the bottom of the beam; B) variable with maximum at the top of the beam; C) uniform

### Uniformen - Uniformen Restposte

Clarification: In upset forging, a bar of uniform cross section usually round, is held between grooved dies, pressure is applied on the end in the direction of the axis of the bar by using a heading tool which spreads the end by metal displacement atm) and the duct has a uniform cross section (v 1=v 2), then FTP is equal to the pressure loss due to friction. Thus to find FTP, one has to estimate the total pressure loss as air flows through the duct from one section to other. 37.4. Estimation of pressure loss in ducts: As air flows through a duct its total pressure drops in the direction. the wave equation, on a cross section of the duct. For the common situation of a uniform medium without ﬂow, this operator is the well-known Laplace operator ∇2. For a non-uniform medium, and in particular with mean ﬂow, the details become more complicated, but the concept of duct modes remains by and large the same1 d) non-uniform Answer: c Clarification: According to the continuity equation, ρAV =constant, where ρ= density, A= cross-sectional area of flow, V = velocity of flow. For a pipe of a uniform cross-section, no matter what the rate of flow is, the velocity of flow inside the pipe will always remain constant. Hence, it'll always be a uniform flow One)Uniform and non-uniform flow: (see Fig. 7.3) If for a given length of the channel, the velocity of flow, depth of flow, slope of the channel and cross-section remain constant, the flow is said to be uniform. Otherwise it is said to be non-uniform. Non-uniform flow is also called varied flow which can be further classified as

If you are searching for more Fluid Mechanics MCQ (Multiple Choice Questions) covering different Fluid Mechanics topics, you can check the following MCQs. Question No.10 In a pipeline, the hydraulic grade line is above the pipe center line in the longitudinal section at point A and below the pipe center line at another point B A road of uniform cross-section A and length L force P. The Young's Modulus E of the material, is_____? Home; Civil Engineering Mcqs; Theory of Structures; A road of uniform cross-section A and length L force P. The Young's Modulus E of the material, is_____ Air at 30°C enters a rectangular duct 1 m long and 4 mm by 16 mm in cross section at a rate of 0.0004 kg/s. If a uniform heat flux of 500 W/m 2 is imposed on both of the long sides of the duct, calculate (a) the air outlet temperature, (b) the average duct surface temperature, and (c) the pressure drop Consider a uniform ﬂow with velocity U in the positive x direction combined 2 along the axis of a pipe of circular cross-section, as shown in the ﬁgure. The densities of both ﬂuids are constant and equal and the ﬂuids are driven Fully developed pipe and duct flow a. Laminar and turbulent flow solution methods b. Moody diagram 10.

1. Steady Uniform flow. Flow at constant rate through a duct of uniform cross-section (The region close to the walls of the duct is disregarded) 2. Steady non-uniform flow. Flow at constant rate through a duct of non-uniform cross-section (tapering pipe) 3. Unsteady Uniform flow The duct system is constructed of approved materials in accordance with Section 603 and the duct penetrating the wall complies with all of the following requirements: The duct shall not exceed 100 square inches (0.06 m 2). The duct shall be constructed of steel not less than 0.0217 inch (0.55 mm) in thickness

### Cross Section - bei Amazon

• ation, and another entrance exam. Workshop Technology MCQ question is the important chapter for a Mechanical Engineering and GATE students. Page-14 section-
• 2 Prof. Dr. Atıl BULU Figure 4.1 Mathematical definition of the Uniform Steady Flow is, 0, 0 1 2 0 ∂ ∂ = ∂ ∂ = = x y t y y y y (4.1) y0 = Normal depth d) Non-Uniform Steady Flows: The water depth changes along the channel cross- sections but does not change with time at each every cross section with time
• Figure 8.1(b) Formation of Secondary Flow in a Bend of a Duct Figure 8.1(b) shows one example of the formation of a secondary flow in a gently- curving duct of rectangular cross-section. The curvature of the flow is accompanied by a pressure gradient which rises across the section from the inner to the outer wall

### Open Channel Flow MCQ - Uniform Flow - Set 1 (Solved

1. e with the aid of the equation : NuD = 0.023 ReD 0.8 Pr 0.4 (where the flow should be turbulent and the fluid properties are evaluated at the fluid bulk temperature from Table 3.3), the heat transfer coefficient for.
2. Figure 8.1(b) Formation of Secondary Flow in a Bend of a Duct Figure 8.1(b) shows one example of the formation of a secondary flow in a gently-curving duct of rectangular cross-section. The curvature of the flow is accompanied by a pressure gradient which rises across the section from the inner to the outer wall
3. e accurately the volume of copper in the pipe. Which instruments are used? ? Cambridge MCQs, O Levels MCQs, Physics 5054 MCQs, Physical Quantities, Units and Measurement mcqs MCQs, calipers and micrometer , micrometer and rule , rule and tape , tape and caliper
4. Sound Propagation in a Uniform Duct of Arbitrary Cross-Section with one or more Plane Flexible Walls, an Isotropic Bulk Lining and a Uniform Mean Gas Flow. Reference work entry. 86 Downloads; The duct is depicted below. It is shown as having one flexible wall, consisting of a flat elastic plate, though the analysis that follows is equally valid.
5. ⇐ MCQ in Power Plant Engineering Part 2 | ME Board Exam . Choose the letter of the best answer in each questions. 101. A rectangular foundation cross -section has a bed plate dimension of 8 ft x 10 ft. The uniform clearance on each side is 1 ft. The height of the foundation is 4.5 ft

Numericals on RAC-4. 1. 1 m 3 / s of air is conveyed through a straight, horizontal duct of uniform cross-section and a length of 40 m. If the velocity of air through the duct is 5 m/s, find the required fan power input when a) A circular duct is used, and b) A rectangular duct of aspect ratio 1:4 is used The schematic view of particle deposition in uniform, expanding and contracting ducts is displayed in Fig. 1(a)-(c). The uniform duct is 0.4 m in length and 0.02 m in width.This design is in consistent with Tian and Ahmadi as well as Zhang and Chen for further comparison. For expanding and contracting ducts, the duct width starts to vary at the mid-section of the duct

The duct geometry is shown in the diagram. The duct is of uniform but arbitrary cross-section, as is the lining, which is assumed to behave as an equivalent fluid. The bulk acoustic properties of the lining are assumed different in the x direction and in any transverse direction, independent of direction, in the transverse y plane The fully developed velocity profile for rectangular ducts has been determined, using an analogy with the stress function of the theory of elasticity (Timoshenko and Goodier ) by Dryden et al. , and Marco and Han .Consider the cross section of a rectangular duct, characterized by its aspect ratio α* = 2b/2a, as shown in Fig. 36 with the flow direction along the x axis.

Entdecken MCQ bei NET-A-PORTER. Die neue kollektion shoppen. Laufsteg-Bestseller & die neue Saison. Expressversand & kostenlose Rücksendung möglich The cross section of the tapered pipe is not uniform but the rate of fluid flow is constant throughout the flow. Any duct which has non-uniform cross section but the hydrostatic parameters remain constant fall under this category

For a loaded cantilever beam of uniform cross-section, the bending moment (in N-mm) along the length is M(x) = 5x 2 + 10x, where x is the distance (in mm) measured from the free end of the beam. The magnitude of shear force (in N) in the cross-section at x = 10 mm is _____. Answer: 110 Solution 8. Estimate the section factor for a channel section having cross sectional area of 40m2 and hydraulic depth of 6m. a) 94.3 b) 95.6 c) 97.9 d) 100 Answer: c 9. Calculate the Froude's number for a channel having discharge of 261.03m3/s, cross sectional area of 42m2 and the top width being 6m. a) 0.65 b) 0.72 c) 0.38 d) 0.75 Answer: d. 10 View Answer / Hide Answer. ANSWER: c. sum of rate of heat transfer by conduction out of the element (x+dx) and heat transfer by convection from the surface between x to (x+dx) 4. In the process of heat transfer through extended surfaces or fins, the entire surface area is at. a. the same constant temperature

### 50 Multiple Choice Questions on Mechanical Engineering

A wire of uniform area of cross-section A length L and resistance R is cut into two parts. Resistivity of each part _____? A. remains the same B. is doubled C. is halved D. becomes zero. Mcq Added by: admin. Current Electricity Current Electricity Physics Mcqs. Physics Mcqs for Test Preparation from Basic to Advance. Physics Mcqs are from the. Surveying Multiple Choice Questions with Answers for competitive exams. These short objective type questions with answers are very important for Board exams as well as competitive exams. These short solved questions or quizzes are provided by Gkseries d) Every cross-section. 40. A steel bar of 40mm x 40mm square cross-section is subjected to an axial compressive load of 200kN. If the length of the bar is 2m and E=200GPa, the elongation of the bar well be _____ a) 1.25mm b) 2.70mm c) 4.05mm d) 4.50mm. Solution :Elongation of the bar = Pl/AE = -200×10^3x 2000 / ( 1600 x 200 x 10^3) = -1.2

### 250+ TOP MCQs on Forging Operations-1 and Answer

Monday, June 22, 2020 Multiple Choice Questions on Shaper and Planer Machine MCQ on Strength of materials Multiple Choice Questions (MCQ) on Simple stress and strain February 16, 2015 admin Modulus of rigidity is a. Tensile stress / Tensile strain b. Shear stress / Shear strain c. Tensile stress / Shear strain d. Shear stress / Tensile strai For the non-uniform bending of the cross-section of the beam in Fig. 6.6, determine the normal, shear and principal stresses at point K. Assume that all cross-section dimensions are given. K 2.5 m 2.5 m 18 kN Fig. 6.6 Beam and cross-section Problem 6.

section (The region close to the walls of the duct is disregarded) 2. Steady non-uniform flow Flow at constant rate through a duct of non-uniform cross-section (tapering pipe) 3. Unsteady Uniform flow Flow at varying rates through a long straight pipe of uniform cross-section. (Again the region close to the walls is ignored.) 4. Unsteady non. examveda.com is a portal which provide MCQ Questions for all competitive examination such as GK mcq question, competitive english mcq question, arithmetic aptitude mcq question, Data Intpretation, C and Java programing, Reasoning aptitude questions and answers with easy explanations Q10. A current is flowing through a conductor with non-uniform area of cross-section. Then. a) Current will be different at different cross-sections. b) Current will be the same at all the cross-sections. c) Current will be different but current density will be same at all the cross-sections

A general analytical method has been developed to approximate the pressure distribution along a porous duct of an arbitrary cross section with uniform fluid extraction or addition through the wall. Application of this method is made to a variety of cross sections including circular tubes, parallel plate channels, elliptical ducts, rectangular. The equivalent diameter for pressure drop calculation for a duct of square cross-section is given by (where, x = each side of the square duct) ? - A.x B.√(πx) C.√(2x) D.√(x/2) Submitted by:Ali Uppa

The effects of the curvature of the side walls on the flow of an incompressible viscous fluid in a duct of uniform cross-section due to the motion of the top wall and an imposed pressure gradient along the duct are considered. In order to show the effect of the wall curvature, two illustrative examples are given. One of them is the flow in a duct of semicircular cross-section and the other is. Non-Circular Ducts: For flow in non-circular ducts or ducts for which the flow does not fill the entire cross-section, we can define the hydraulic diameter Dh as. where. A = cross-sectional area of actual flow, P = wetted perimeter, i.e. the perimeter on which viscous shear acts. With this definition, all previous equations for the Reynolds.

ﬂuid through a straight square porous duct with uniform square cross-section. We choose the Cartesian coordinate sys-tem such that the z-axis along the axis of the duct and x;y-axes along the sides of square duct. Let x ¼ a and y ¼ a be the lengths of the square duct in x and y directions respectively Hydraulics MCQ Practice Questions (Civil Engineering) Set 8. For most economical rectangular section of a channel, the depth is kept: The height of water level in a tank above the centre of a circular hole 2.5 cm in diameter is 50 m. The velocity of water flowing through the hole, is Q = Volume flow rate. v = Flow velocity. A = Cross-sectional area. w = Width. h = Height. n.b. This formula assumes uniform flow conditions within the entire cross-sectional area of duct, without any friction losses near to surfaces. Volumetric Flow Rate Measured. Enter the volumetric amount of substance that will flow pass in a unit of time

The reduction of the sound power radiated to the downstream in a duct with a side branch tube with a uniform cross section or two coupled tubes with different cross sections. Full size imag Water flows through a duct of square cross section as shown in Fig. P4.49 with a constant, uniform velocity of V=20 \mathrm{m} / \mathrm{s} . Consider fluid p

### 250+ TOP MCQs on Types of Fluid Flow and Answer

This is the Multiple Choice Questions Part 5 of the Series in Machine Design as one of the Mechanical Engineering topic. In Preparation for the ME Board Exam make sure to expose yourself and familiarize in each and every questions compiled here taken from various sources including but not limited to past Board Exam Questions in Mechanical Engineering field, Mechanical Engineering Books. aspects. For example, in order to account for the non-uniform lumen of blood vessels, Rao and Rathna Devanathan  and Schneck and Ostrach  studied pulsatile flow through circular tubes of varying cross-section at low Reynolds number. Bitoun and Bellet  analysed pulsatile flow with reference to stenosis in microcirculation Q38. A fin of uniform cross-section A and perimeter P has a base temperature Ts and it is exposed to fluid having temperature T∞ How is the temperature distribution in the fin given? Where, m = √(hP/kA) h = convective heat transfer coefficient. k = thermal conductivity of fin. T = Temperature of the fin at the distance x from the base of fin Get Central Air Conditioning System Multiple Choice Questions (MCQ Quiz) with answers and detailed solutions. Download these Free Central Air Conditioning System MCQ Quiz Pdf and prepare for your upcoming exams Like SSC, Railway, UPSC, State PSC

### Hydrology MCQs and Answers for competitive exams

Cross-Sectional Area 4 4. e h. Wetted Perimeter. D R = = ×. In this definition, the term wetted perimeter is used to designate the perimeter of the cross-section that is in contact with the flowing fluid. This applies to a liquid that occupies part of a conduit, as in sewer lines carrying waste-water, or a creek or river. If a gas flows. Then the application of boundary conditions for three different types of cross sections is examined. While the model is general enough to be extended to almost any arbitrary cross section, microchannels of polygonal (with circular as a limiting case), rectangular, and rhombic cross sections are analyzed in this study Mechanics of Solids MCQ question on Simple Stress and Strain 1. Stress is (a)External force (b)Internal resistive force (c)Axial force (d)Radial force (Ans:b) 2. Following are the basic types of stress except (a)Tensile stress (b)Compressive stress (c)Shear stress (d)Volumetric stress (Ans:d) 3 Non-uniform and non-circular cross-section channels. In the more general case, channels with non-uniform non-circular cross-sectional area, such as the Tesla valve, the hydraulic diameter is defined as: =, where V is the total wetted volume of the channel, S is the total wetted surface area Effects of the side walls on the unsteady flow of a second-grade fluid in a duct of uniform cross-section Erdogan, M. Abstract. Publication: International Journal of Non Linear Mechanics. Pub Date: October 2004 DOI: 10.1016/j.ijnonlinmec.2003.12.004 Bibcode: 2004IJNLM..39.1379E.

### Theory of Structures MCQ Questions and Answers - QforQuestion

A = Uniform cross sectional area of the bar. E = Young's modulus for the bar. L = Length of the bar. ρ = Weight of the bar, per unit length, for the material of the bar . Consider an element of length 'dy' at a distance of 'y' from the bottom of the bar being elongated due to the force 'P', at section x-x, as shown in the figure Fins of uniform cross-section (rectangular or circular) - Governing differential equation: • To calculate the set of constants C1 and C2, or A and B, we need two boundary conditions: Aug. 2016 MT/SJEC/M.Tech. 17 • One of the B.C's is that the temperature of the fin at its base. • i.e. B. C. (i): at x = 0, T = To • Regarding the. Magnetostatic Fields MCQ. 1. The flux-density at a distance of 0.1 m from a long straight wire, carrying a current of 200 A is. 2. An iron rod of 10-3 m3 volume and relative permeability of 1150 is placed inside a long solenoid wound with 5 turns/cm

### Machine Design MCQ Objective Question and Answers Part

In a two-dimensional duct flow, air flows in the bottom half of the duct with uniform velocity and there is no flow in the upper half. The value of the kinetic energy correction factor a for this flow is (a) 2.0 (b) 2 ¼ (c) 4.0 (d) 3. Nonlinear propagation of a wave packet in a two-dimensional acoustically lined duct The method of multiple scales is used to analyze the nonlinear effects of the gas motion and the acoustic lining material on the propagation and attenuation of a wave packet in a two-dimensional duct of uniform cross section. The partial differential equations describing the space and time variation of. Uniform depth occurs when the flow depth (and thus the average flow velocity) remains constant Common in long straight runs Average flow velocity is called uniform-flow velocity V0 Uniform depth is maintained as long as the slope, cross-section, and surface roughness of the channel remain unchanged. During uniform flow, the termina

### Hydraulics And Fluid Mechanics MCQ Questions & Answers

The duct is observed to be nearly isothermal at 60°C. Determine the exit temperature of the air and the rate of heat loss from the duct to the attic space. Hot air at atmospheric pressure and 80°C enters an 8-m-long uninsulated square duct of cross section 0.2 m * 0.2 m that passes through the attic of a house at a rate of 0.15 m3/s Indication of Laminar or Turbulent Flow The term fl tflowrate shldbhould be e reprepldbR ldlaced by Reynolds number, ,where V is the average velocity in the pipe, and L is the characteristic dimension of a flow.L is usually D R e VL / (diameter) in a pipe flow. in a pipe flow. --> a measure of inertial force to the > a measure of inertial force to th

(post-tensioning) ∆σ pc= nσ pg (C 11.3.2) N N 1 − 2 1 ' where ∆σ p = prestress loss in tendon n = Young's modulus ratio E p/E c σ' cpg = compressive stress of concrete at tendon centroid due to tensioning N = number of tendon tensionings (i.e. number of tendon groups) E c = Young's modulus of concrete E p = Young's modulus of tendons; for CFRM E p = E f  Effects of friction. Write down the momentum equation, define each term precisely, and explain how the various terms arise. A wind-tunnel test section is rectangular in cross-section with height 0.6 m and width 0.5 m. The model under test is mounted in the middle. A uniform air flow (at temperature 20°C) enters the test section A new method is proposed to calculate natural frequencies of a rectangular variable cross-section beam with multiple cracks under different temperatures. The temperature module is introduced through the elastic modulus, and cracks are modelled by bending springs without mass. Based on the transfer matrix method, the characteristic equation of the cracked beam is derived by the implementation.