Description : List the various models available for flow analysis?
Last Answer : For the analysis of a fluid element in its motion, various models are available for the purpose of study such as a) Finite control volume approach b) Infinitesimal fluid element approach c) Molecular approach
Description : Explain the important properties of international standard atmosphere?
Last Answer : International standard atmosphere is the atmospheric model of how the pressure, density and temperature of the earth‟s atmosphere vary over a wide range of altitudes It has several layers a) Troposphere b) Stratosphere c) Mesosphere d) Ionosphere e) Exosphere
Description : Tell something about differential and integral approach?
Last Answer : One may establish a big control volume to encompass the region R and calculate the overall features like drag & lift by studying what happens at the control surface. This procedure is called integral approach. Differential ... the flow at every point in a given flow field in the form P(x,y,z,t).
Description : What is finite control volume approach?
Last Answer : Consider a control volume in space drawn within a finite region of the flow. This volume is called as the control volume and the closed surface which surrounds the control volume is called as ... are applied to the fluid inside the control volume and to the fluid crossing the control surface.
Description : What are the procedures for the development of an equation in aerodynamics?
Last Answer : a) Invoke the basic principles of fluid flow a. Mass is conserved b. Momentum is conserved, i.e. Newton‟s second law c. Energy is conserved b) Determine the suitable model of the fluid c) Apply the basic principles in the model of the fluid to obtain the mathematical equations
Description : Where should the resultant force be located on a body?
Last Answer : The resultant force should be located on the body such that it produces the same effect as the distributed loads. Resultant force should be located at a distance of center of pressure Xcp from the leading edge.
Description : What is meant by stream lining a body?
Last Answer : Streamlining is the shaping of an object, such as an aircraft body, to reduce the amount of drag or resistance to motion and increases lift through a stream of air. A curved shape allows air to flow smoothly around it. A flat shape fights air flow and causes more drag or resistance.
Description : What is critical angle of attack and what will happen when it is exceeded?
Last Answer : The angle of attack which produces the maximum lift coefficient is called as the critical angle of attack. It is also called as the "stall angle of attack". At the critical angle of attack ... becomes more and more fully separated and the airfoil produces less coefficient of lift and will stall.
Description : Define angle of attack?
Last Answer : The angle between the chord line of an airfoil and the relative wind is defined as the angle of attack.
Description : What is relative wind velocity?
Last Answer : The relative wind is the direction of movement of the atmosphere relative to an aircraft or an airfoil. It is opposite to the direction of movement of the aircraft or airfoil. The velocity at which this relative wind is flowing is called as the relative wind velocity.
Description : How the concepts of Bernoulli‟s principle differ from Archimedes principle?
Last Answer : Bernoulli‟s principle states that the increase in speed of the fluid element occurs with a decrease in pressure of the fluid. Archimedes principle states that the upward force exerted on an object immersed in a fluid is equal to the weight of the fluid displaced by the object.
Description : Enumerate the names of some notable aerodynamicists?
Last Answer : There are several aerodynamic experts who are responsible for the flight. Some of them are listed as a) Daniel Bernoulli b) Ludwig Prandtl c) George Cayley d) Theodore von Karman e) Martin Wilhelm Kutta f) Richard whitcomb g) Nicholay Zhukowsky
Description : What are the major objectives of aerodynamics?
Last Answer : a) To estimate the aerodynamic forces and moments acting on the bodies moving through the air (e.g.) lift, drag, moments on wings, fuselages, etc. b) To calculate the amount of heat transfer ... (e.g.) aerodynamic heating. c) To determine the flow moving through the air internally and externally.
Description : List the different types of aerodynamics?
Last Answer : a) Internal aerodynamics which deals about the flow of air inside the ducts (e.g.) flow through nozzles, flow in a wind tunnel, etc. b) External aerodynamics which deals about the flow around moving objects (e.g.) flow of air over an aircraft.
Description : What are the major classifications of fluid dynamics?
Last Answer : a) Hydrodynamics which deals about the movement of water. b) Gas dynamics which deals about the movement of gases. c) Aerodynamics which deals about the movement of air.
Description : Give the importance of aerodynamics in designing an aircraft?
Last Answer : a) When an aircraft is moving in air, some reactions take place in the properties of air and aerodynamics helps in studying those properties. b) Aerodynamics deals about the proper shape of the aircraft which will reduce the formation of shock waves and helps in achieving the desired Mach number.
Description : What do you mean by aerodynamics?
Last Answer : Aerodynamics is the branch of science which deals with the movement of gases especially air and its interaction with moving objects. Aerodynamics is the study of forces and resulting motion of objects through air.
Description : Pick up the correct statement from the following: (A) The incidental expenses of a miscellaneous character which could not be predicted during preparation of the estimate, is called contingencies (B) ... and the proportions of materials to be used for a particular item (D) All the above
Last Answer : (D) All the above
Description : Different proportions of oxygen in the various oxides of nitrogen proves the [MP PMT 1985] (A) Equivalent proportion (B) Multiple proportion (C) Constant proportion (D) Conservation of matter
Last Answer : (B) Multiple proportion
Description : Which of the following steps would you consider first for an effective communication? (a) Select the channel of communication (b) Plan the evaluation procedure (c) Specify the objectives of communication (d) Identify various media of communication
Last Answer : (c) Specify the objectives of communication
Description : Pick out the wrong statement about the smoking tendency of various hydrocarbon constituents of kerosene. (A) Smoking tendency of hydrocarbons increases in the order: paraffins → isoparaffins → naphthenes → aromatics (B) Smoking tendency of paraffins increases with decrease in its molecular weight
Last Answer : (B) Smoking tendency of paraffins increases with decrease in its molecular weight
Description : What are the functions of the various constituents of RBC diluting fluids?
Last Answer : sodium citrate prevents coagulation of blood and provide correct osmotic pressure. formalin acts as a preservative and checks bacterial and fungal growth.
Description : Which of the following accentuates clinkering trouble on furnace grate burning coal? (A) Low reactivity of carbonised residue containing high proportions of iron & sulphur (B) Low forced draught and fuel bed temperature (C) Thick fire bed and preheated primary air (D) All (A), (B) and (C)
Last Answer : (D) All (A), (B) and (C)
Description : Pick up the incorrect statement from the following. While performing preliminary test on concrete (A) Proportions of the material and water should be the same as to be used at the work site (B) ... in air-tight containers (D) Concrete ingredients should be kept at a temperature of 37° 2°C
Last Answer : Answer: Option D
Description : The specific heat of air increases with increase in (a) temperature (b) pressure (c) both pressure and temperature (d) variation of its constituents (e) air flow
Last Answer : Answer : a
Description : Relative proportions of G and C versus A and T in DNA can be determined by its (A) Melting temperature (B) Buoyant density (C) Both (A) and (B) (D) None of these
Last Answer : Answer : C
Description : The tendency of a deformed solid to regain its actual proportions instantly upon unloading known as ______________ a) Perfectly elastic b) Delayed elasticity c) Inelastic effect d) Plasticity
Last Answer : a) Perfectly elastic
Description : A sample of pure carbon dioxide, irrespective of its source contains 27.27% carbon and 72.73% oxygen. The data supports [AIIMS 1992] (A) Law of constant composition (B) Law of conservation of mass (C) Law of reciprocal proportions (D) Law of multiple proportions
Last Answer : (A) Law of constant composition
Description : Pick out the wrong statement. (A) Main constituents of LPG are propane and butane (B) C.V. of natural gas is about 10000 KCal/Nm3 (C) C.V. of LPG is about 26000 kcal/Nm3 (11500 kcal/kg) (D) L.P.G. is lighter than air
Last Answer : (D) L.P.G. is lighter than air
Description : Which of the following is the most major constituents of air pollutants? (A) Oxides of sulphur (B) Oxides of nitrogen (C) Carbon monoxide (D) Hydrogen sulphide
Last Answer : (A) Oxides of sulphur
Description : 6 gm of carbon is burnt with an amount of air containing 18 gm oxygen. The product contains 16.5 gms CO2 and 2.8 gms CO besides other constituents. What is the degree of conversion on the basis of disappearance of limiting reactant? (A) 100% (B) 95% (C) 75% (D) 20%
Last Answer : (B) 95%
Description : How do you know where to put the "x" in the proportions?
Last Answer : answer:Percent problems translate very directly from English to math. I'll show you with an example: The problem is, What percent of 40 is 10? What is what you're solving for. This should be your x. Per cent - per means ... is 20% of 200? What: x Is: = %: /100 Of: * x = 20/100 * 200 x = 40
Description : How much will national debt clocks help raise the awareness about the astronomical proportions of public debt?
Last Answer : Nobody will give a fuck. We all know but people don’t really care. Look at Bush. It skyrocketed under his watch and nobody cared. It is only a big deal when you don’t like the guy in charge. I have gas in my car and the TV still works. Fuck it. Life is good.
Description : By changing the dimensions of the viewport, the and ofthe objects being displayed can be manipulated. a.Number of pixels and image quality b.X co-ordinate and Y co-ordinate c.Size and proportions d.All of these
Last Answer : c.Size and proportions
Description : What is Law of conservation of mass and Law of constant proportions? -Chemistry 9th
Last Answer : What is the Law of conservation of mass? Laws of conservation of mass - It states that mass can neither created nor destroyed. The total mass before and after a chemical reaction remains constant. ... that in a chemical substance the elements are always present in a fixed proportion by their mass.
Description : By whom was the law of constant proportions enunciated? -Do You Know?
Last Answer : answer:
Description : Which of these graphing calculator proportions will give a square graph?
Last Answer : 30 wide by 20 high
Description : Asserion (A): Ethanol is miscible in all proportions with water Reason (R): Hydrogen bond is formed between water and alcohol molecules.
Last Answer : Asserion (A): Ethanol is miscible in all proportions with water Reason (R): Hydrogen bond is formed between ... is false D. A is false but R is true
Description : The addition of high proportions of maganese makes steel useful in making rails or railroads because manganese useful in making rails or railroads bec
Last Answer : The addition of high proportions of maganese makes steel useful in making rails or railroads because manganese useful in ... ,iii C. ii,iv D. I,iii,iv
Last Answer : The addition of high proportions of maganese makes steel useful in making rails or railroads because ... . can show highest oxidation state of +7
Description : What is to enlarge or alter something beyond normal proportions?
Last Answer : write you answer? ;)
Description : Which painting by Leonardo de vinci shows the ideal proportions of the human body?
Last Answer : hi
Description : To test the proportions and variance, we use
Last Answer : Ans. ‘F’ test
Description : The inherent capacity of the soil to supply nutrients to plants in adequate amount and in suitable proportions
Last Answer : Ans. Soil Fertility
Description : By whom was the law of constant proportions enunciated?
Last Answer : Proust
Description : .What is it that forms the basis of DNA finger-printing? (a) The relative proportions of purines and pyrimidines in DNA. (b) The relative difference in the DNA occurrence in blood, skin ... ridges and grooves of the fingerprints. (d) Satellite DNA occurring as highly repeated short DNA segments
Last Answer : Satellite DNA occurring as highly repeated short DNA segments
Description : A human male produces sperms with the genotypes AB, Ab, aB and ab pertaining to two diallelic characters in equal proportions. What is the corresponding genotype of this person? (a) AaBB (b) AABb (c) AABB (d) AaBb
Last Answer : (d) AaBb
Description : Flint glass (A) Has slightly the greater refracting power than crown glass (B) Has roughly double refracting power than that of crown (C) And crown glass proportions yield the required focal length ... dispersion produced by the convex lens at the emergence from the concave (D) All the above
Description : Pick up the correct proportions of chemical ingredients of cement (A) Lime : Silica : Alumina : Iron oxide : 63 : 22 : 6 : 3 (B) Silica : Lime : Alumina : Iron oxide : 63 : 22 : 6 : 3 (C) Alumina : Silica : ... oxide : 63 : 22 : 6 : 3 (D) Iron oxide : Alumina : Silica : Lime : 63 : 22 : 6 : 3
Last Answer : Answer: Option A
Description : The proportions of charcoal, saltpetre and sulphur in gun powder by weight, are respectively: (A) 15, 75, 10 (B) 75, 10, 15 (C) 10, 15, 75 (D) 10, 75, 15