**Option A:** Viscosity of a fluid is that property which determines the amount of its resistance to a shearing force

**Option B:** Viscosity is due primarily to interaction between fluid molecules

**Option C:** Viscosity of liquids decreases with in-crease in temperature

**Option D:** Viscosity of liquids is appreciably affected by change in pressure

**Correct Answer: **Viscosity of liquids is appreciably affected by change in pressure ✔

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**Option A:** fluids are capable of flowing

**Option B:** fluids conform to the shape of the con-taining vessels

**Option C:** when in equilibrium, fluids cannot sustain tangential forces

**Option D:** when in equilibrium, fluids can sustain shear forces

**Correct Answer: **when in equilibrium, fluids can sustain shear forces ✔

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**Option A:** any weight, floating or immersed in a liquid, is acted upon by a buoyant force

**Option B:** Buoyant force is equal to the weight of the liquid displaced

**Option C:** The point through which buoyant force acts, is called the center of buoyancy

**Option D:** Center of buoyancy is located above the center of gravity of the displaced liquid v

**Correct Answer: **Center of buoyancy is located above the center of gravity of the displaced liquid v ✔

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**Option A:** The center of buoyancy is located at the center of gravity of the displaced liquid

**Option B:** For stability of a submerged body, the center of gravity of body must lie directly below the center of buoyancy

**Option C:** If e.g. and center of buoyancy coincide, the submerged body must lie at neutral equilibrium for all positions

**Option D:** For stability of floating cylinders or spheres, the e.g. of body must lie below the center of buoyancy

**Correct Answer: **All floating bodies are stable ✔

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**Option A:** Local atmospheric pressure depends upon elevation of locality only

**Option B:** Standard atmospheric pressure is the mean local atmospheric pressure a* sea level

**Option C:** Local atmospheric pressure is always below standard atmospheric pressure

**Option D:** A barometer reads the difference be-tween local and standard atmospheric pressure

**Correct Answer: **Standard atmospheric pressure is the mean local atmospheric pressure a* sea level ✔

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**Option A:** maximum

**Option B:** minimum

**Option C:** zero

**Option D:** non-zero finite

**Correct Answer: **zero ✔

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**Option A:** friction loss and flow

**Option B:** length and diameter

**Option C:** flow and length

**Option D:** friction factor and diameter

**Correct Answer: **friction loss and flow ✔

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**Option A:** minimum

**Option B:** maximum

**Option C:** zero

**Option D:** negative value

**Correct Answer: **could be any value ✔

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**Option A:** less than 2000

**Option B:** between 2000 and 4000

**Option C:** more than 4000

**Option D:** less than 4000

**Correct Answer: **less than 2000 ✔

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**Option A:** gravity, pressure and viscous

**Option B:** gravity, pressure and turbulent

**Option C:** pressure, viscous and turbulent

**Option D:** gravity, viscous and turbulent

**Correct Answer: **gravity, pressure and viscous ✔

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**Option A:** energy

**Option B:** work

**Option C:** mass

**Option D:** length

**Correct Answer: **length ✔

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**Option A:** the direction and magnitude of the velocity at all points are identical

**Option B:** the velocity of successive fluid par-ticles, at any point, is the same at suc-cessive periods of time

**Option C:** the magnitude and direction of the velocity do not change from point to point in the fluid

**Option D:** the fluid particles move in plane or parallel planes and the streamline pat-terns are identical in each plane

**Correct Answer: **the fluid particles move in plane or parallel planes and the streamline pat-terns are identical in each plane ✔

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**Option A:** unity

**Option B:** greater than unity

**Option C:** greater than 2

**Option D:** greater than 4

**Correct Answer: **greater than 4 ✔

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**Option A:** steady flow

**Option B:** unsteady flow

**Option C:** laminar flow

**Option D:** uniform flow

**Correct Answer: **uniform flow ✔

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**Option A:** pressure

**Option B:** flow

**Option C:** velocity

**Option D:** dsscharge

**Correct Answer: **velocity ✔

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**Option A:** keeps on increasing

**Option B:** keeps on decreasing

**Option C:** remains constant

**Option D:** may increase/decrease

**Correct Answer: **remains constant ✔

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**Option A:** supersonics, as with projectiles and jet propulsion

**Option B:** full immersion or completely enclosed flow, as with pipes, aircraft wings, nozzles etc.

**Option 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

**Option D:** all of fhe above

**Correct Answer: **supersonics, as with projectiles and jet propulsion ✔

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**Option A:** principle of conservation of mass holds

**Option B:** velocity and pressure are inversely proportional

**Option C:** total energy is constant throughout

**Option D:** the energy is constant along a stream-line but may vary across streamlines

**Correct Answer: **the energy is constant along a stream-line but may vary across streamlines ✔

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**Option A:** is steady

**Option B:** is one dimensional

**Option C:** velocity is uniform at all the cross sec-tions

**Option D:** all of the above

**Correct Answer: **all of the above ✔

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**Option A:** supersonics, as with projectile and jet propulsion

**Option B:** full immersion or completely enclosed flow, as with pipes, aircraft wings, nozzles etc.

**Option 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

**Option D:** all of the above

**Correct Answer: **simultaneous motion through two fluids where there is a surface of dis-continuity, gravity forces, and wave making effect, as with ship’s hulls ✔

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**Option A:** supersonics, as with projectile and jet propulsion

**Option B:** full immersion or completely enclosed flow, as with pipes, aircraft wings, nozzles etc

**Option 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

**Option D:** all of the above

**Correct Answer: **full immersion or completely enclosed flow, as with pipes, aircraft wings, nozzles etc ✔

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**Option A:** smooth and streamline flow

**Option B:** laminar flow

**Option C:** steady flow

**Option D:** turbulent flow

**Correct Answer: **turbulent flow ✔

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**Option A:** frictional force

**Option B:** viscosity

**Option C:** surface friction

**Option D:** all of the above

**Correct Answer: **all of the above ✔

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**Option A:** 1 Pa

**Option B:** 91Pa

**Option C:** 981 Pa

**Option D:** 9810 Pa

**Correct Answer: **9810 Pa ✔

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**Option A:** less than 2000

**Option B:** between 2000 and 4000

**Option C:** more than 4000

**Option D:** less than 4000

**Correct Answer: **more than 4000 ✔

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**Option A:** 10 kg

**Option B:** 100 kg

**Option C:** 1000 kg

**Option D:** 1 kg

**Correct Answer: **10 kg ✔

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**Option A:** mass

**Option B:** momentum

**Option C:** energy

**Option D:** work

**Correct Answer: **energy ✔

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**Option A:** high velocity

**Option B:** high pressure

**Option C:** weak material

**Option D:** low pressure

**Correct Answer: **low pressure ✔

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**Option A:** comparing two identical equipments

**Option B:** designing models so that the result can be converted to prototypes

**Option C:** comparing similarity between design and actual equipment

**Option D:** hydraulic designs

**Correct Answer: **designing models so that the result can be converted to prototypes ✔

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**Option A:** the pressure at any location reaches an absolute pressure equal to the saturated vapour pressure of the liquid

**Option B:** pressure becomes more than critical pressure

**Option C:** flow is increased

**Option D:** pressure is increased

**Correct Answer: **the pressure at any location reaches an absolute pressure equal to the saturated vapour pressure of the liquid ✔

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**Option A:** ratio of inertial force to force due to viscosity

**Option B:** ratio of inertial force to force due to gravitation

**Option C:** ratio of inertial force to force due to surface tension

**Option D:** all the four ratios of inertial force to force due to viscosity, gravitation, surface tension, and elasticity

**Correct Answer: **all the four ratios of inertial force to force due to viscosity, gravitation, surface tension, and elasticity ✔

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**Option A:** specific gravity of liquids

**Option B:** specific gravity of solids

**Option C:** specific gravity of gases

**Option D:** relative humidity

**Correct Answer: **specific gravity of liquids ✔

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**Option A:** the direction and magnitude of the velocity at all points are identical

**Option B:** the velocity of successive fluid pai-ticles, at any point, is the same at suc¬cessive periods of time

**Option C:** the magnitude and direction of the velocity do not change from point to point in the fluid

**Option D:** the fluid particles move in plane or parallel planes and the streamline pat-terns are identical in each plsr.e

**Correct Answer: **the magnitude and direction of the velocity do not change from point to point in the fluid ✔

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**Option A:** crest

**Option B:** nappe

**Option C:** sill

**Option D:** weir top

**Correct Answer: **sill ✔

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**Option A:** wake

**Option B:** drag

**Option C:** lift

**Option D:** boundary layer

**Correct Answer: **wake ✔

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**Option A:** 0.83

**Option B:** 0.6

**Option C:** 0.4

**Option D:** 0.3

**Correct Answer: **0.6 ✔

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**Option A:** maximum

**Option B:** minimum

**Option C:** zero

**Option D:** non-zero and finite

**Correct Answer: **zero ✔

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**Option A:** head of water (h)

**Option B:** h2

**Option C:** V/T

**Option D:** h2

**Correct Answer: **V/T ✔

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**Option A:** 0.5

**Option B:** 0.4

**Option C:** 0.515

**Option D:** 0.5

**Correct Answer: **0.5 ✔

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**Option A:** parallel to central axis flow

**Option B:** parallel to outer surface of pipe

**Option C:** of equal yelocity in a flow

**Option D:** along which the pressure drop is uniform

**Correct Answer: **of equal yelocity in a flow ✔

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**Option A:** steady flow

**Option B:** turbulent flow

**Option C:** laminar flow

**Option D:** non-uniform flow

**Correct Answer: **non-uniform flow ✔

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**Option A:** one dimensional flow

**Option B:** uniform flow

**Option C:** steady flow

**Option D:** turbulent flow

**Correct Answer: **turbulent flow ✔

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**Option A:** one dimensional flow

**Option B:** uniform flow

**Option C:** steady flow

**Option D:** turbulent flow

**Correct Answer: **one dimensional flow ✔

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**Option A:** one dimensional flow

**Option B:** uniform flow

**Option C:** steady flow

**Option D:** turbulent flow

**Correct Answer: **steady flow ✔

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**Option A:** steady

**Option B:** unsteady

**Option C:** laminar

**Option D:** vortex

**Correct Answer: **steady ✔

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**Option A:** one dimensional flow

**Option B:** uniform flow

**Option C:** steady flow

**Option D:** turbulent flow

**Correct Answer: **uniform flow ✔

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**Option A:** one dimensional flow

**Option B:** uniform flow

**Option C:** steady flow

**Option D:** turbulent flow

**Correct Answer: **streamline flow ✔

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**Option A:** the direction and magnitude of the velocity at all points are identical

**Option B:** the velocity of successive fluid par-ticles, at any point, is the same at suc-cessive periods of time

**Option C:** the magnitude and direction of the velocity do not change from point to point in the fluid

**Option D:** the fluid particles move in plane or parallel planes and the streamline pat-terns are identical in each plane

**Correct Answer: **the velocity of successive fluid par-ticles, at any point, is the same at suc-cessive periods of time ✔

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**Option A:** the flow is steady

**Option B:** the flow is streamline

**Option C:** size and shape of the cross section in a particular length remain constant

**Option D:** size and cross section change uniform¬ly along length

**Correct Answer: **size and shape of the cross section in a particular length remain constant ✔

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**Option A:** vertical line

**Option B:** horizontal line

**Option C:** inclined line with flow downward

**Option D:** inclined line with upward flow

**Correct Answer: **in any direction and in any location ✔

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**Option A:** Pascal law

**Option B:** Newton’s law of viscosity

**Option C:** boundary layer theory

**Option D:** continuity equation

**Correct Answer: **continuity equation ✔

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**Option A:** the direction and magnitude of the velocity at all points are identical

**Option B:** the velocity of successive fluid par-ticles, at any point, is the same at suc-cessive periods of time

**Option C:** the magnitude aricf direction of the velocity do not change from point to point in the fluid

**Option D:** the fluid particles move in plane or parallel planes and the streamline pat-terns are identical in each plane

**Correct Answer: **velocity, depth, pressure, etc. change from point to point in the fluid flow ✔

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**Option A:** steady uniform

**Option B:** non-steady non-uniform

**Option C:** non-steady uniform

**Option D:** steady non-uniform

**Correct Answer: **steady non-uniform ✔

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**Option A:** steady

**Option B:** unsteady

**Option C:** uniform

**Option D:** laminar

**Correct Answer: **steady ✔

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**Option A:** constant

**Option B:** variable

**Option C:** zero

**Option D:** zero under limiting conditions

**Correct Answer: **zero ✔

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**Option A:** the direction and magnitude of the veiocity at all points are identical

**Option B:** the velocity of successive fluid par-ticles, at any point, is the same at suc-cessive periods of time

**Option C:** the magnitude and direction of the velocity do not change from point to point in the fluid

**Option D:** the fluid particles move in plane or parallel planes and the streamline pat-terns are identical in each plane

**Correct Answer: **the direction and magnitude of the veiocity at all points are identical ✔

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**Option A:** orifice plate

**Option B:** venturi

**Option C:** rotameter

**Option D:** pitot tube

**Correct Answer: **pitot tube ✔

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**Option A:** absolute pressure

**Option B:** velocity of fluid

**Option C:** flow

**Option D:** rotation

**Correct Answer: **flow ✔

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**Option A:** 1000 kg

**Option B:** 4000 kg

**Option C:** 2000 kg

**Option D:** 8000 kg

**Correct Answer: **1000 kg ✔

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**Option A:** only when the fluid is frictionless

**Option B:** only when the fluid is incompressible and has zero viscosity

**Option C:** when there is no motion of one fluid layer relative to an adjacent layer

**Option D:** irrespective of the motion of one fluid layer relative to an adjacent layer

**Correct Answer: **when there is no motion of one fluid layer relative to an adjacent layer ✔

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**Option A:** same

**Option B:** higher

**Option C:** lower

**Option D:** lower/higher depending on weight of body

**Correct Answer: **lower ✔

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**Option A:** at the center of gravity

**Option B:** above the center of gravity

**Option C:** below be center of gravity

**Option D:** could be above or below e.g. depending on density of body and liquid

**Correct Answer: **below be center of gravity ✔

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**Option A:** 2 meters of water column

**Option B:** 3 meters of water column

**Option C:** 3.5 meters of water column

**Option D:** 4 m of water column

**Correct Answer: **3 meters of water column ✔

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**Option A:** submerged body

**Option B:** volume of the floating body

**Option C:** volume of the fluid vertically above the body

**Option D:** displaced volume of the fluid

**Correct Answer: **displaced volume of the fluid ✔

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**Option A:** pressure in pipes, channels etc.

**Option B:** atmospheric pressure

**Option C:** very low pressure

**Option D:** difference of pressure between two points

**Correct Answer: **difference of pressure between two points ✔

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**Option A:** center of gravity

**Option B:** center of pressure

**Option C:** metacentre

**Option D:** center of buoyancy

**Correct Answer: **center of pressure ✔

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**Option A:** buoyancy, gravity

**Option B:** buoyancy, pressure

**Option C:** buoyancy, inertial

**Option D:** inertial, gravity

**Correct Answer: **buoyancy, gravity ✔

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**Option A:** at the centroid

**Option B:** above the centroid

**Option C:** below the centroid

**Option D:** at metacentre

**Correct Answer: **below the centroid ✔

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## An open vessel of water is accelerated up an inclined plane. The free water surface will__________?

**Option A:** be horizontal

**Option B:** make an angle in direction of inclination of inclined plane

**Option C:** make an angle in opposite direction to inclination of inclined plane

**Option D:** any one of above is possible

**Correct Answer: **make an angle in opposite direction to inclination of inclined plane ✔

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**Option A:** meta center should be above e.g.

**Option B:** center of buoyancy and e.g. must lie on same vertical plane

**Option C:** a righting couple should be formed

**Option D:** all of the above

**Correct Answer: **all of the above ✔

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**Option A:** Mach number

**Option B:** Froude number

**Option C:** Reynold’s number

**Option D:** Weber’s number

**Correct Answer: **Mach number ✔

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**Option A:** 10 m/sec

**Option B:** 25 m/sec

**Option C:** 2 m/sec

**Option D:** 50 m/sec

**Correct Answer: **2 m/sec ✔

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**Option A:** 1 : 5

**Option B:** 1 : 2.5

**Option C:** 1 :25

**Option D:** 1:V5″

**Correct Answer: **1 : 5 ✔

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**Option A:** below the center of gravity

**Option B:** below the center of buoyancy

**Option C:** above the center of buoyancy

**Option D:** between e.g. and center of pressure

**Correct Answer: **above the center of gravity ✔

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**Option A:** 900 minutes

**Option B:** 4 minutes

**Option C:** 4 x (225)3/2 minutes

**Option D:** 4 (225)1/3 minutes

**Correct Answer: **4 x V225 minutes ✔

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**Option A:** e.g. of body

**Option B:** center of pressure

**Option C:** center of buoyancy

**Option D:** metacentre

**Correct Answer: **metacentre ✔

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**Option A:** Mach number

**Option B:** Froude number

**Option C:** Reynold’s number

**Option D:** Weber’s number

**Correct Answer: **Weber’s number ✔

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**Option A:** resultant force acting on a floating body

**Option B:** equal to the volume of liquid displaced

**Option C:** force necessary to keep a body in equilibrium

**Option D:** the resultant force on a body due to the fluid surrounding it

**Correct Answer: **the resultant force on a body due to the fluid surrounding it ✔

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**Option A:** the weight of the body

**Option B:** more than the weight of the body

**Option C:** less than the weight of the body

**Option D:** weight of the fluid displaced by the body

**Correct Answer: **weight of the fluid displaced by the body ✔

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**Option A:** bottom surface of the body

**Option B:** e.g. of the body

**Option C:** metacentre

**Option D:** all points on the surface of the body

**Correct Answer: **all points on the surface of the body ✔

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**Option A:** vertical upward force through e.g. of body and center line of body

**Option B:** buoyant force and the center line of body

**Option C:** mid point between e.g. and center of buoyancy

**Option D:** all of the above

**Correct Answer: **buoyant force and the center line of body ✔

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**Option A:** 2.4 m

**Option B:** 3.0 m

**Option C:** 4.0 m

**Option D:** 5.0 m

**Correct Answer: **3.0 m ✔

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**Option A:** The horizontal component of the hydro-static force on any surface is equal to the normal force on the vertical projection of the surface

**Option B:** The horizontal component acts through the center of pressure for the vertical projection

**Option C:** The vertical component of the hydrostatic force on any surface is equal to the weight of the volume of the liquid above the area

**Option D:** he vertical component passes through the center of pressure of the volume

**Correct Answer: **he vertical component passes through the center of pressure of the volume ✔

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**Option A:** 2 meters of water column

**Option B:** 3 meters of water column

**Option C:** 5 meters of water column

**Option D:** 6 meters of water Column

**Correct Answer: **6 meters of water Column ✔

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**Option A:** 9,000 kg

**Option B:** 13,500 kg

**Option C:** 18,000 kg

**Option D:** 27,000 kg

**Correct Answer: **13,500 kg ✔

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**Option A:** the area is horizontal

**Option B:** the area is vertical

**Option C:** the area is inclined

**Option D:** all of the above

**Correct Answer: **all of the above ✔

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**Option A:** when its meatcentric height is zero

**Option B:** when the metancentre is above e.g

**Option C:** when its e.g. is below it’s center of buoyancy

**Option D:** metacentre has nothing to do with position of e.g. for determining stability

**Correct Answer: **when the metancentre is above e.g ✔

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**Option A:** negligible

**Option B:** same as buoyant force

**Option C:** zero

**Option D:** non of these

**Correct Answer: **zero ✔

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**Option A:** centroid of the displaced volume of fluid

**Option B:** center of pressure of displaced volume

**Option C:** e.g. of floating ‘body

**Option D:** does not exist

**Correct Answer: **centroid of the displaced volume of fluid ✔

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**Option A:** upthrust

**Option B:** reaction

**Option C:** buoyancy

**Option D:** metacentre

**Correct Answer: **buoyancy ✔

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**Option A:** above it

**Option B:** below it

**Option C:** at same point

**Option D:** above or below depending on area of body

**Correct Answer: **below it ✔

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**Option A:** on the surface at which resultant pres-sure acts

**Option B:** on the surface at which gravitational force acis

**Option C:** at which all hydraulic forces meet

**Option D:** similar to metacentre

**Correct Answer: **on the surface at which resultant pres-sure acts ✔

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**Option A:** water surface

**Option B:** center of pressure

**Option C:** center of gravity

**Option D:** center of buoyancy

**Correct Answer: **center of gravity ✔

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**Option A:** at e.g. of body

**Option B:** at center of pressure

**Option C:** vertically upwards

**Option D:** at metacentre

**Correct Answer: **vertically upwards ✔

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**Option A:** sin 9

**Option B:** sin 9

**Option C:** casS

**Option D:** cos 9

**Correct Answer: **sin 9 ✔

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**Option A:** Pascal’s law

**Option B:** Dalton’s law of partial pressure

**Option C:** Newton’s law of viscosity .

**Option D:** Avogadro’s hypothesis

**Correct Answer: **Pascal’s law ✔

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**Option A:** U-tube with water

**Option B:** inclined U-tube

**Option C:** U-tube with mercury

**Option D:** micro-manometer with water

**Correct Answer: **micro-manometer with water ✔

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**Option A:** inertial force and gravity

**Option B:** viscous force and inertial force

**Option C:** viscous force and buoyancy force

**Option D:** pressure force and inertial force

**Correct Answer: **pressure force and inertial force ✔

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**Option A:** increases

**Option B:** decreases

**Option C:** remains unaffected

**Option D:** unpredictable

**Correct Answer: **increases ✔

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