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Fluid mechanics hydraulic engineering
| 1-Dont try to cram or spend more time here just read it fast and cover syllabus then practice MCQ's cheptor of same topic to check your progress. . |
| 2-Wrong options are also given but dont concentrate there, Right answer is in bold format. |
| Q1 ⇒ The horse power transmitted through a pipe is maximum when the ratio of loss of head due to friction and total head supplied is 1/3 [other wrong options] [Discuss in forum] |
| Q2 ⇒ The correct relationship among displacement thickness d, momentum thickness m and energy thickness e is e > d > m [other wrong options] [Discuss in forum] |
| Q3 ⇒ For laminar flow in circular pipes, the Darcy's friction factor f is equal to 64/ Re [other wrong options] [Discuss in forum] |
| Q4 ⇒ The position of center of pressure on a plane surface immersed vertically in a static mass of fluid is. always below the centroid of the area [other wrong options] [Discuss in forum] |
| Q5 ⇒ Two pieces of metal when immersed in a
liquid have equal upthrust on them, then Both pieces must have equal volumes [other wrong options] [Discuss in forum] |
| Q6 ⇒ The point in the immersed body through which the resultant pressure of the liquid may be taken to act is known as. center of pressure [other wrong options] [Discuss in forum] |
| Q7 ⇒ A wooden cylinder floats vertically in water
with half of its length immersed. The density
of wood is Half the density of water [other wrong options] [Discuss in forum] |
| Q8 ⇒ The horizontal component of force on a curved surface is equal to the. force on a vertical projection of the curved surface [other wrong options] [Discuss in forum] |
| Q9 ⇒ If in a satellite orbiting the earth, a cork is
immersed in a jar of water and released, it
will Remain where left [other wrong options] [Discuss in forum] |
| Q10 ⇒ Stream lines and path lines always coincide in case of. steady flow [other wrong options] [Discuss in forum] |
| Q11 ⇒ As ideal fluid is Frictionless and incompressible [other wrong options] [Discuss in forum] |
| Q12 ⇒ Due to each end contraction, the discharge of rectangular sharp crested weir is reduced by. 5% [other wrong options] [Discuss in forum] |
| Q13 ⇒ The relationship dp/dx = dz/dy
is valid for Irrotational flow [other wrong options] [Discuss in forum] |
| Q14 ⇒ Coefficient of contraction for an external cylindrical mouthpiece is. 1.00 [other wrong options] [Discuss in forum] |
| Q15 ⇒ The ratio between inertia force and viscous
force is called Reynold's number [other wrong options] [Discuss in forum] |
| Q16 ⇒ When a bubble rises from the bottom of a
lake to the surface, its radius doubles. The
atmospheric pressure is equal to that of a
column of water of height H. The depth of the
lake is 7H [other wrong options] [Discuss in forum] |
| Q17 ⇒ The depth 'd' below the free surface at which the point velocity is equal to the average velocity of flow for a uniform laminar flow with a free surface, will be 0.577 D [other wrong options] [Discuss in forum] |
| Q18 ⇒ When the flow in open channel is gradually
varied, the flow is said to be Steady non-uniform flow [other wrong options] [Discuss in forum] |
| Q19 ⇒ When a ship floats on water The weight of water displaced is equal to the weight of the ship [other wrong options] [Discuss in forum] |
| Q20 ⇒ The value of friction factor 'f' for smooth pipes for Reynolds number 106 is approximately equal to. 0.01 [other wrong options] [Discuss in forum] |
| Or |