Whenever a plate is held immersed at some angle with the direction of flow of the liquid, it is subjected to some pressure. The component of this pressure, in the direction of flow of the liquid, is known as (A) Lift (B) Drag (C) Stagnation pressure (D) Bulk modulus

Whenever a plate is held immersed at some angle with the direction of flow of the liquid, it is
subjected to some pressure. The component of this pressure, in the direction of flow of the liquid,
is known as
(A) Lift
(B) Drag
(C) Stagnation pressure
(D) Bulk modulus
by

1 Answer

Answer :

Answer: Option B
by

Related questions

01. Whenever a plate is held immersed at some angle with the direction of flow of the liquid, it is subjected to some pressure. The component of this pressure, at right angles to the direction of flow of the liquid is known as lift. A) True B) False

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When a plate is immersed in a liquid parallel to the flow, it will be subjected to a pressure __________ that if the same plate is immersed perpendicular to the flow. (A) Less than (B) More than (C) Equal to (D) None of these

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Which statement is true relative to changing angle of attack? a. A decrease in angle of attack will increase pressure below the wing and decrease drag b. An increase in angle of attack will decrease pressure below the wing and decrease drag c. An increase in angle of attack will increase drag d. An increase in angle of attack will decrease the lift coefficient

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Drag co-efficient for flow past immersed body is the ratio of __________ to the product of velocity head and density. (A) Shear stress (B) Shear force (C) Average drag per unit projected area (D) None of these

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A liquid compressed in cylinder has a volume of 0.04 m3 at 50 kg/cm² and a volume of 0.039 m3 at 150 kg/cm². The bulk modulus of elasticity of liquid is (A) 400 kg/cm² (B) 4000 kg/cm² (C) (D)

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The region between the separation streamline and the boundary surface of the solid body is known as (A) Wake (B) Drag (C) Lift (D) Boundary layer

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To maintain altitude, what must be done as Indicated Airspeeed (IAS) is reduced? a. Decrease angle of attack to reduce the drag b. Increase angle of attack to maintain the correct lift force c. Deploy the speed brakes to increase drag d. Reduce thrust

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The strain energy due to volumetric strain (A) Is directly proportional to the volume (B) Is directly proportional to the square of exerted pressure (C) Is inversely proportional to Bulk modulus (D) All the above

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Bulk modulus of a fluid __________ as the pressure increases. (A) Remain same (B) Decreases (C) Increases (D) None of these

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The bulk modulus of elasticity (A) Has the dimensions of 1/pressure (B) Increases with pressure (C) Is large when fluid is more compressible (D) Is independent of pressure and viscosity

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bulk modulus of elasticity with increase in pressure (A) Increases (B) Decreases (C) Remain constant (D) Increases first up to certain limit and then decreases

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When a gas or a liquid is subjected to an increased pressure, the substance contracts, the bulk strain is defined as A. final volume ⁄ original volume B. final pressure ⁄ original pressureC. change in volume ⁄ original volumeD. original volume ⁄ change in volume

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An open-ended cylinder of radius and thickness is subjected to internal pressure . The Young's modulus for the material is and Poisson's ratio is . The longitudinal strain is (A) Zero (B) pr/TE (C) pr/2TE (D) None of these

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The point in the immersed body through which the resultant pressure of the liquid may be taken to act is known as (A) Meta center (B) Center of pressure (C) Center of buoyancy (D) Center of gravity

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The unit of bulk modulus of elasticity for a liquid in S.I. unit is (A) N (B) N/m (C) N/m2 (D) N/m3

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A point, in a compressible flow where the velocity of fluid is zero, is called (A) Critical point (B) Vena contractaC) Stagnation point (D) None of these

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Deformation drag, which is caused by widespread deformation of fluid around the immersed body(A) Occurs when NReis very small(B) Is primarily a friction drag(C) Is independent of body length(D) Depends mainly on cross-sectional shape

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If E, N, K and 1/m are modulus of elasticity, modulus of rigidity. Bulk modulus and Poisson ratio of the material, the following relationship holds good (A) E = 3K (1 - 2/m) (B) E = 2N (1 + 1/m) (C) (3/2)K (1 - 2/m) = N (1 + 1/m) (D) All the above

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For a given material, if E, C, K and m are Young's modulus, shearing modulus, bulk modulus and Poisson ratio, the following relation does not hold good (A) E = 9KC/3K + C (B) E = 2K (1 + 2/m) (C) E = 2C (1 + 1/m) (D) E = 3C (1 - 1/m)

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The value of bulk modulus of a fluid is required to determine (A) Reynold's number (B) Froude's number (C) Mach number (D) Euler's number

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The total pressure on a horizontally immersed surface is (where w = Specific weight of the liquid, A = Area of the immersed surface, and x = Depth of the centre of gravity of the immersed surface from the liquid surface) (A) wA (B) wx (C) wAx (D) wA/x

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Resultant pressure of the liquid in the case of an immersed body acts through (A) Centre of gravity (B) Centre of pressure (C) Metacentre (D) Centre of buoyancy

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The centre of gravity of the volume of the liquid displaced by an immersed body is called (A) Centre of gravity (B) Centre of pressure (C) Metacentre (D) Centre of buoyancy

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The depth of centre of pressure (h) for a vertically immersed surface from the liquid surface is given by (where IG = Moment of inertia of the immersed surface about horizontal axis through its centre of gravity, A = Area of immersed surface, and x = Depth of centre of gravity of the immersed surface from the liquid surface) (A) (IG/ ) - (B) (IG/ ) - (C) ( /IG) + (D) (IG/ ) +

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In an immersed body, centre of pressure is (A) At the centre of gravity (B) Above the centre of gravity (C) Below be centre of gravity (D) Could be above or below e.g. depending on density of body and liquid

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A closely coiled helical spring of radius R, contains n turns and is subjected to an axial load W. If the radius of the coil wire is r and modulus of rigidity of the coil material is C, the deflection of the coil is (A) WR3n/Cr4 (B) 2WR3n/Cr4 (C) 3WR3n/Cr4 (D) 4WR3n/Cr

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A closely coiled helical spring of radius R, contains n turns and is subjected to an axial loadW. If the radius of the coil wire is r and modulus of rigidity of the coil material is C, the stress developed in the helical spring is (A) WR/ 3 (B) 2WR/ 3 (C) 2WR/ 2 (D) 4WR/ 2

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Last Answer : (B) 2WR/ 3

Shear deflection of a cantilever of length L, cross sectional area A and shear modulus G, subjected to w/m u.d.l., is (A) (3/4) (L²w/GA) (B) (3/2) (L²w/GA) (C) (2/3) (L3w/GA) (D) (3/2) (Lw/GA²)

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Last Answer : (A) (3/4) (L²w/GA)

is the pre-stressed force applied to the tendon of a rectangular pre-stressed beam whose area of cross section is and sectional modulus is . The maximum stress in the beam, subjected to a maximum bending moment , is (A) f = (P/A) + (Z/M) (B) f = (A/P) + (M/Z) (C) f = (P/A) + (M/Z) (D) f = (P/A) + (M/6Z)

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Last Answer : Answer: Option C

is the pre-stressed force applied to tendon of a rectangular pre-stressed beam whose area of cross section is and sectional modulus is . The minimum stress on the beam subjected to a maximum bending moment is (A) f = (P/A) - (Z/M) (B) f = (A/P) - (M/Z) (C) f = (P/A) - (M/Z) (D) f = (P/A) - (M/6Z)

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Last Answer : Answer: Option C

Adiabatic bulk modulus is equal to: A. Υ × P; where Υ: the ratio of the specific heat capacities of the gas, P: pressureB. PressureC. The ratio of the specific heat capacities of the gasD. Υ ⁄ P; where Υ: the ratio of the specific heat capacities of the gas, P: pressure

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Last Answer : Υ × P; where Υ: the ratio of the specific heat capacities of the gas, P: pressur

Isothermal bulk modulus is equal to A. Υ × P; where Υ: the ratio of the specific heat capacities of the gas, P: pressure B. Pressure C. The ratio of the specific heat capacities of the gas D. Υ ⁄ P; where Υ: the ratio of the specific heat capacities of the gas, P: pressure

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Last Answer : Option A

In what direction does the buoyant force on an object fully immersed in a liquid act ? -Science

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Last Answer : upward direction

Which of the following pairs are correctly matched? 1. Piezometric head : Sum of datum head and pressure head 2. Dynamic head : Sum of datum head and velocity head 3. Stagnation head : Sum of Piezometric head and velocity head 4. Total head : Sum of Piezometric head and dynamic head (a) 1, 2 & 3 only (b) 1, 3 & 4 only (c) 2, 3 & 4 only (d) 1, 2, 3 & 4

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Last Answer : (b) 1, 3 & 4 only

Pick out the wrong statement: (A) The vacuum pressure is always the negative gauge pressure (B) The pressure of the liquid measured by a piezometer tube is the gauge pressure (C) Manometric liquid should have high surface tension (D) The point at which the resultant pressure on an immersed surface acts, is known as the centre of gravity

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Pick out the wrong statement. (A) The shear stress at the pipe (dia = D, length = L) wall in case of laminar flow of Newtonian fluids is (D/4L). ∆p (B) In the equation, T. gc = k. (du/dy) n the value of 'n' for pseudoplastic and Dilatant fluid are < 1 and >1 respectively (C) Shear stress for Newtonian fluid is proportional to the rate of shear in the direction perpendicular to motion (D) With increase in the Mach number >0.6, the drag co-efficient decreases in case of compressible fluids

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Drag is defined as the force exerted by the (A) Fluid on the solid in a direction opposite to flow (B) Fluid on the solid in the direction of flow (C) Solid on the fluid (D) None of these

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The co-efficient of drag and lift for an incompressible fluid depends on the (A) Reynolds number (B) Froude number (C) Mach number (D) All (A), (B) and (C)

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It is the unbalanced force developed in a turbo jet engine that is caused by the difference in the momentum of the low-velocity air entering the engine and the high velocity exhaust gases leaving the engine.  a. Fall  b. Lift  c. Drag  d. Thrust

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Which statement is true regarding the opposing forces acting on an aeroplane in steady-state level flight? a. Thrust is greater than drag and weight and lift are equal b. These forces are equal c. Thrust is greater than drag and lift is greater than weight d. Thrust is slightly greater than lift, but the drag and weight are equal

Description : Which statement is true regarding the opposing forces acting on an aeroplane in steady-state level flight? a. Thrust is greater than drag and weight and lift are equal b. These forces are equal ... greater than weight d. Thrust is slightly greater than lift, but the drag and weight are equal

Last Answer : b. These forces are equal

At a constant mass and altitude, a lower airspeed requires: a. More thrust and a lower coefficient of lift b. Less thrust and a lower coefficient of lift c. More thrust and a lower coefficient of drag d. A higher coefficient of lift

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Last Answer : d. A higher coefficient of lift

Explain lift & drag wind energy conversion principle.

Description : Explain lift & drag wind energy conversion principle.

Last Answer : Two primary aerodynamic forces work in wind turbine rotors are:- 1) Lift which acts perpendicular to the direction of wind flow and 2) Drag acts parallel to wind flow. ... aero foil type blade offer better performance and higher rotational speed and make them ideal for power generation.