Fluid Mechanics Objective type Questions and Answers List 21. At the centre line of a pipe flowing under pressure where the velocity gradient is zero, the shear stress will be 1. d. spring force. (e) none of the above. (d) decrease in viscosity of liquid (e) ideal fluid. Your email address will not be published. (c) the magnitude and direction of the velocity do not change from point to point in the fluid Ans: c, 9. How long should it take to empty the prototype ? Explanation are given for understanding. (d) the resultant force on a body due to the fluid surrounding it (b) keeps on decreasing Operation of McLeod gauge used for low pressure measurement is based on the principle of A _____________ restricts air flow. (e) streamline flow. A metal with specific gravity of o floating in a fluid of same specific gravity a will Hydraulics Multiple Choice Questions and Answers - Set 26 MCQ Fluid Mechanics Edit Practice Test: Question Set - 26. Ans: a, 50. (b) atmospheric pressure (b) unsteady (e) true one-dimensional. (a) newtons/m (b) center of pressure (e) at center of pressure. change from point to point in the fluid flow. The pressure at 2.5 m below the oil surface will be LMRC Syllabus 2018 Lucknow Metro JE SCTO Executive Non. For measuring flow by a venturimeter, if should be installed in (e) it moves easily. Reciprocating pumps are no more to be seen in industrial applications (in comparison to centrifugal pumps) because of (a) high initial and maintenance cost (b) lower discharge (c) (c) gas (c) friction Ans: a, 190. For manometer, a better liquid combination is one having (d) weight of the fluid displaced by the body 4. product of pressure at its centroid and the area. (e) none of the above. (b) the center of gravity of the body and the center of buoyancy Ans: c, 230. Ans: d 2. (e) 1 : 53/2 (a) be horizontal (d) A barometer reads the difference be-tween local and standard atmospheric pressure (a) energy/unit area Poise is the unit of An object having 10 kg mass weighs 9.81kg on a spring balance. A model of a reservior is drained in 4 mts by opening the sluice gate. Ans: d, 102. Study Guide Instrumentation Amp Control Technician. Ans: d, 14. 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Buoyant force is (b) specific volume (b) flow (a) above it (c) is large when fluid is more compressible (b) buoyancy, pressure (a) less than 2000 (c) mid point between e.g. (b) specific gravity of solids (b) the velocity of successive fluid par-ticles, at any point, is the same at suc-cessive periods of time Ans: e, 113. (d) continuity equation Ratio of inertia force to surface Jension is known as (e) none of the above. 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(c) 4 x (225)3/2 minutes Pitot tube is used for measurement of (e) gravity, pressure. 200 Questions and Answers on Practical Civil Engineering Works Vincent T. H. CHU 5 (ii) The superstructure continually experiences alternative sagging and hogging moments during incremental launching. (d) it can provide longer column due to low density Pressure of the order of 10″‘ torr can be measured by (a) centroid of the volume of fluid vertically above the body Liquids (c) at mean sea level (e) none of the above. The resultant upward pressure of a fluid on a floating body is equal to the weight of the fluid displaced by the body. (a) compressibility (a) higher (a) incompressible Ans: a, 82. (b) viscosity of the liquid (e) has no units. (d) at metacentre (a) the weight of the body (c) total energy is constant throughout (b) decrease (d) turbulent flow (b) full immersion or completely enclosed flow, as with pipes, aircraft wings, nozzles etc. (e) none of the above. The ratio of absolute viscosity to mass density is known as (b) between 2000 and 4000 Mercury is often used in barometer because (d) metacentre has nothing to do with position of e.g. This is very useful for all kind of Competitive examinations. (d) pa2R/2 (c) newton-sec per metre2 (c) flow Ans: d, 90. Froude number is significant in Latest Fluid Mechanics objective questions and answers for competitive exams & interviews. Ans: a, 51. Ans: c, 87. (c) linear deformation is small (a) pressure The capillary rise at 20°C in a clean glass tube of 1 mm bore containing water is ap-proximately (b) higher The continuity equation is connected with Correct. (a) specific viscosity Center of buoyancy is the (c) surface tension (a) negligible e. spool size. (a) absolute pressure and center of buoyancy (e) none of the above. If there is a survey it only takes 5 minutes, try any survey which works for you. (d) the fluid particles move in plane or parallel planes and the streamline pat-terns are identical in each plane These objective type Hydraulics & Pneumatics questions are very important for campus placement test, semester exams, job interviews and competitive exams like GATE, IES, PSU, NET/SET/JRF, UPSC and diploma. (a) Mach number (e) none of the above. Fluid is a substance which offers no resistance to change of (b) shear stress and viscosity (a) pressure in pipe, channels etc. (d) unpredictable Most Important 200 Mechanical Engineering Interview Questions & Answers PDF . Dimensions of surface tension are Practical fluids (e) unpredictable. This article provides you latest 2021 Mechanical Engineering Objective Questions with Answer for GATE, IES, PSUs with Pdf Free Download.In this article provides you latest 2021 Mechanical MCQ Pdf students. Hydraulic Machines, Hydraulics and Fluid Mechanics, Mechanical Engineering Multiple Choice Questions / Objective type questions, MCQ's, with question and answers, download free PDF, Mechanical Engineering, Multiple Choice Questions, Objective type questions, Mechanical Engineering short notes, rapid fire notes, best theory (b) pco2/?2/2 Many thanks. (d) less at low temperature and more at high temperature thank u sir.. these r vry usefll plzs send me PDF. (c) whole of the metal piece will be immersed with its top surface just at mercury level (a) it is incompressible (d) higher/lower depending on temperature (b) Orifice plate (e) 250 m/sec. (a) less than 2000 Centre of pressure compared to e.g. Ans: c, 205. (e) all temperature. (e) (a) and (d) above. (e) newton m. (b) surface tension (d) 6 Ans: b, 44. (c) rotameter (d) he vertical component passes through the center of pressure of the volume (d) non-zero finite (c) both of the above (d) all of the above Building Materials MCQ PDF Building Construction MCQ PDF Applied Mechanics MCQ PDF Concrete technology MCQ PDF Design of steel structures MCQ PDF CPM MCQ PDF Hydraulics & Fluid Mechanics MCQ PDF Highway Engineering MCQ PDF Estimation and costing MCQ PDF Irrigation Engineering MCQ PDF. (d) Newton’s formula The conditions for the stable equilibrium of a floating body are Ans: a, 209. This is according to (a) center of gravity The horizontal component of the force on a curved surface is equal to. (e) all of the above. (a) 0.83 (a) crest Hydraulic Machines Objective Questions With Answers Set. 3. (a) linear A pressure of 25 m of head of water is equal to The property of fluid by virtue of which it offers resistance to shear is called (d) lower/higher depending on weight of body (a) Pascal law Study Guide Instrumentation amp Control Technician. (e) 7 meters of water column. (d) low pressure Ans: c, 172. (b) h2 (a) h Principle of similitude forms the basis of Ans: d, 40. Civil Engineering Objective Questions with Answer Free Pdf Download. Select the correct statement (e) compressibility. Ans: c, 136. (b) horizontal line Ans: b, 134. The region between the separation streamline and the boundary surface of the solid body is known as Viscosity of water in comparison to mercury is (c) cohesion Cavitation is caused by (b) center of buoyancy and e.g. (d) all of the above (d) micro-manometer with water (a) minimum Choose the wrong statement Solved examples with detailed answer description, explanation are given and it would be easy to understand. (d) negative value (a) increase In the case of steady flow of a fluid, the acceleration of any fluid particle is (a) viscosity (a) bottom surface of the body Ans: a, 137. Ans: c, 11. (c) simultaneous motion through two fluids where there is a surface of dis-continuity, gravity forces, and wave making effect, as with ship’s hulls The flow in which each liquid particle has a definite path and their paths do not cross each other is called (d) viscosity (b) Froude number Professionals, Teachers, Students and Kids Trivia Quizzes to test your knowledge on the subject. Ans: b, 66. Non uniform flow occurs when (a) rectilinear flow. (e) none of the above. (c) center of pressure Ans: c, 140. (e) none of the above. (e) velocity. (b) remains constant (c) 1500 kg (c) steady flow (b) viscous (d) friction factor and diameter (d) possess all the above properties Ans: b, 78. (a) the direction and magnitude of the velocity at all points are identical (a) friction loss and flow (d) 2.5kN/m2 (a) specific gravity = gravity x density Working principle of dead weight pressure gauge tester is based on Choose the correct relationship (a) decreases linearly with elevation (d) newton-sec2 per meter Ans: a, 121. Question 3 of 20. (e) none of the above. (c) sill (c) a righting couple should be formed Professionals, Teachers, Students and Kids Trivia Quizzes to test your knowledge on the subject. (a) fluids are capable of flowing (e) density. is (c) 0.515 When the flow parameters at any given instant remain same at every point, then flow is said to be Ans: d, 212. (c) at the summit (a) cannot be subjected to shear forces. (e) velocity, depth, pressure, etc. Jobs in Oil and Gas Renewables Nuclear Power. Fluid is a substance that (a) cannot be subjected to shear forces (b) always expands until it fills any container (c) has the same shear stress.at a point regardless of its motion (d) cannot remain at rest under action of any shear force (e) flows. Ans: d, 155. (d) pressure force and inertial force Ans: a, 36. (b) increase in viscosity of liquid (d) rotameter Ans: e, 185. (c) non-steady uniform Hydraulic Machines Objective Questions with Answers Set. (b) flow (a) the resultant force acting on a floating body Ans: a, 35. (a) has the dimensions of 1/pressure (a) one dimensional flow (e) none of the above. Course: Advanced Hydraulics Module 6: Pumps and Turbines Objective Questions:-1. (c) more than 4000 (b) liquid discharge (c) stoke (b) increases (a) pressure in pipes, channels etc. (e) none of the above. Ans: d, 221. (d) unpredictable of body (b) atmospheric pressure For similarity, in addition to models being geometrically similar to prototype, the following in both cases should also be equal Ans: c, 193. (e) centroid. (d) increase/decrease depending on depth of immersion (e) none of the above. (e) in any direction and in any location. (c) 4°C Ans: a, 240. (d)”2.5 m The equation of continuity holds good when the flow (e) none of the above. (b) dynamicviscosity = kinematicviscosity x density (c) uniform (a) dissolved air (b) velocity of fluid The value of ‘g’ at this place is (e) none of the above. Metacentric height is the distance between the metacentre and (a) the center of gravity of the body andthe meta center (e) 9 m/sec . Ans: d, 130. The total energy of each particle at various places in the case of perfect incompres sible fluid flowing in continuous sream What fraction of its volume is under mercury ? The bulk modulus of elasticity with increase in pressure (c) is incompressible (b) cohesion of the liquid (d) kinematicviscosity = dynamicviscosity x density The prototype is expected to attain a velocity of 5 m/sec. Rain drops are spherical because of (e) velocity and diameter. (p) Buoyant force is equal to the weight of the liquid displaced (e) pitot tube. (c) below the centroid (a) Pascal’s law (d) work (e) none of the above. (d) relative humidity Which of the following instruments is used to measure flow on the application of Bernoulli’s theorem Ans: a, 129. (d) metacentre (d) all the above are correct Ans: b, 92. (b) 0.4 (a) metres2 per sec (e) streamline flow. (b) full immersion or completely enclosed flow, as with pipes, aircraft wings, nozzles etc. Useful for freshers, students preparing for semester exams and MTech Preparation. (d) displaced volume of the fluid (e) none of the above. To avoid vaporisation in the pipe line, the pipe line over the ridge is laid such that it is not more than so many fake sites. (b) parabolic (d) metacentre The free water surface will (c) density/dynamic viscosity Ans: d, 64. (a) force of adhesion During the opening of a valve in a pipe line, the flow is Ans: d, 4. 4. (e) specific viscosity. Ans: e, 10. Ans: b, 236. It is required to lift a weight of 1 tonne. (b) Standard atmospheric pressure is the mean local atmospheric pressure a* sea level (a) volumetric strain (c) Local atmospheric pressure is always below standard atmospheric pressure (e) hydrostaticforce = surface tension x gravity. This definition is according to (e) velocity, depth, pressure etc. (a) the flow is steady Required fields are marked *. Ans: b, 178. (e) none of the above. Solved examples with detailed answer description, explanation are given and it would be easy to understand. (d) it has no units (d) turbulent flow (d) cohesion (b) momentum Ans: a, 132. (a) same Ans: e, 165. Specific weight of sea water is more that of pure water because it contains (c) steady flow (b) cohesion pressure is decreased (c) steady flow (b) Newton’s law of viscosity Ans: c, 41. (c) viscosity (a) resistance to shear stress is small (d) all points on the surface of the body Ans: b, 210. (c) at same point (c) density (a) wake (d) 9.75 m/sec2 (c) the center of gravity of the body and the center of pressure (c) pressure in liquids Ans: c, 57. Ans: d, 208. Ans: b, 15. (c) greater than 2 (d) the energy is constant along a stream-line but may vary across streamlines (b) 245 kN/m2 (d) turbulent flow (c) 1 :25 Which of the following is the unit of kinematic viscosity (e) free vortex type. (c) newton-sec per meter Rotameter is a device used to measure (d) the force necessary to maintain equilibrium of a submerged body (c) Pascal’s law (d) gas velocities (c) U-tube with mercury Ans: d, 7. (d) laminar Ans: d, 215. (b) 9.81 m/sec2 (d) metal piece will sink to the bottom (c) shape (e) Relative density of liquids can be determined by means of the depth of flotation of hydrometer. (c) Reynold’s number (b) has zero viscosity gr. (c) laminar flow Ans: d, 203. of body must lie below the center of buoyancy Where can I get Civil Engineering Hydraulics Interview Questions and Answers (objective type, multiple choice)? (c) at which all hydraulic forces meet Ans: d, 197. Ans: c, 74. (d) all of fhe above (c) 100 (e) h3/1. (b) Orifice plate (a) steady flow (c) viscous and incompressible (d) Continuity equation (d) all of the above (e) 4 x V225 minutes. (a) 25 kN/m2 (b) uniform flow (b) dissolved salt (c) simultaneous motion through two fluids where there is a surface of dis-continuity, gravity forces, and wave making effect, as with ship’s hulls (b) same as buoyant force (b) adhesion (b) capillarity (e) unpredictable. (a) resultant force acting on a floating body (e) never zero. (d) 10,000 (d) inviscous and compressible (b) buoyancy Density of water is maximum at (b) 5 (e) Gauge piessure is equal to atmospheric pressure plus instrument reading. Ans: e, 89. (b) more Download Hydraulics & Fluid Machineries MCQ Question Answer PDF « (b) 91Pa (a) it is the best liquid Property of a fluid by which its own molecules are attracted is called The force exerted by a jet impinging normally on a fixed plate is a. b. c. d. 2. 14.5 psi b. (e) buoyancy. (a) center of gravity Answer Explanation Related Ques: ANSWER: all of the above. (d) zero under limiting conditions Ans: a, 94. Ans: d, 225. Ans: b, 120. Most Asked Technical Basic CIVIL | Mechanical | CSE | EEE | ECE | IT | Chemical | Medical MBBS Jobs Online Quiz Tests for Freshers Experienced. (c) 40 x 105 kg/cm2 (e) in between e.g. Ans: d, 33. (a) the area is horizontal (e) all of the above. Answer all the following questions: Question (1): [20 Marks] Select the most appropriate answer from the multiple choices given: 1. (b) center of pressure (e) pitot tube. (d) length Dynamic viscosity of most of the gases with rise in temperature (c) metacentre (a) acts in the plane of the interface normal to any line in the surface (b) cohesion (b) uniform flow (b) 3.0 m (c) simultaneous motion through two fluids where there is a surface of dis-continuity, gravity force, and wave making effects, as with ship’s hulls Choose the wrong statement (c) viscosity (b) 10000 N/m3 Which of the following is demensionless (c) 1000 kg (a) one dimensional flow The flow which neglects changes in a transverse direction is known as (d) only normal stresses can exist (a) mass of liquid displaced (d) does not exist c) works d) … (d) 4 (225)1/3 minutes Hydrometer is used to determine (d) steady non-uniform (d) increases exponentially with elevation Explain with a neat sketch construction & working of the double acting cylinder. (a) surface tension Ans: a, 42. (c) less than the weight of the body The resultant upward pressure of the fluid on an immersed body due to its tendency to uplift the sub-merged body is called (a) 2.4 m above the hydraulic gradient (c) the magnitude aricf direction of the velocity do not change from point to point in the fluid (e) unpredictable. (d) 52.2 cm (b) above the centroid (a) gas law (e) none of the above. (a) higher than the surface of liquid (c) both of die above (b) the flow is streamline (b) the velocity of successive fluid par-ticles, at any point, is the same at suc-cessive periods of time (c) remains constant (c) specific speed (e) none of above is correct. Practice Test: Question Set - 19 1. (a) steady (e) velocity of air. In order to increase sensitivity of U-tube manometer, one leg is usually inclined by angle 9. (b) turbulent flow (a) 1000 Ans: c, 16. (e) rain level. (c) The point through which buoyant force acts, is called the center of buoyancy WELCOME TO YOU…! (c) lower Ans: c, 133. (d) 20 mm (e) viscosity. Parker Industrial Pneumatics Manual Answer … (a) 0°C (a) at the inlet (c) same Ans: d, 159. (a) 2 meters of water column The helix angle for double helical gears may be made up to (A) 45° (B) 60° (C) 75° (D) 90° C... Labels. (d) center of buoyancy (a) the direction and magnitude of the veiocity at all points are identical Ans: c, 84. (c) remain same (d) difference of pressure between two points
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