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Q1. | Bulk modulus of a fluid __________ as the pressure increases. |

A. | remains same [Wrong Answer] |

B. | remains same [Wrong Answer] |

C. | increases [Correct Answer] |

D. | none of these. [Wrong Answer] |

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Explanation:-
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**Also Read Similar Questions Below :**

⇒ The pressure at a point 4 m below the free surface of water is.

19.24 kPa

29.24 kPa

39.24 kPa

49.24 kPa

⇒ The loss of pressure head in case of laminar flow is proportional to.

velocity

(velocity)2

(velocity)3

(velocity)4

⇒ A manometer is used to measure.

low pressure

moderate pressure

high pressure

atomospheric pressure

⇒ If the coefficient of discharge is 0.6, then the discharge over a right angled notch is.

0.417 H5/2

1.417 H5/2

4.171 H5/2

7.141 H5/2

⇒ An error of 1% in measuring head over the apex of the notch (

*H*) will produce an error of __________ in discharge over a triangular notch.

1%

1.5%

2%

2.5%

⇒ The pressure of fluid due to hammer blow is.

directly proportional to density of fluid

inversely proportional to density of fluid

directly proportional to (density)1/2 of fluid

inversely proportional to (density)1/2 of fluid

⇒ A flow in which the viscosity of fluid is dominating over the inertia force is called.

steady flow

unsteady flow

laminar flow

turbulent flow

⇒ An ideal fluid is frictionless and incompressible.

Correct

Incorrect

Both (a) and (b)

None of these

⇒ The metacentric height of a ship is 0.6 m and the radius of gyration is 4 m. The time of rolling of a ship is.

4.1 s

5.2 s

10.4 s

14.1 s

⇒ The flow in a pipe is turbulent when Reynold number is.

less than 2000

between 2000 and 2800

more than 2800

none of these

⇒ If the depth of water in an open channel is less than the critical depth, the flow is called.

critical flow

turbulent flow

tranquil flow

torrential flow

⇒ Bernoulli's equation is applied to.

venturimeter

orifice meter

pitot tube

all of these

⇒ A glass tube of smaller diameter is used while performing an experiment for the capillary rise of water because.

it is easier to see through the glass tube

glass tube is cheaper than a metallic tube

it is not possible to conduct this experiment with any other tube

all of the above

⇒ In two dimensional flow, the flow does not take place in a curve.

True

False

Both (a) and (b)

None of these

⇒ The unit of kinematic viscosity in S. I. units is.

N-m/s

N-s/m2

m2/s

N-m

⇒ A flow in which each liquid particle does not have a definite path and the paths of individual particles also cross each other, is called turbulent flow.

Agree

Disagree

Both (a) and (b)

None of these

⇒ When the pressure intensity at a point is more than the local atmospheric pressure, then the difference of these two pressures is called.

gauge pressure

absolute pressure

positive gauge pressure

vacuum pressure

⇒ In a convergent mouthpiece, the absolute pressure head at vena contracta is the same as that of the atmosphere.

True

False

Both (a) and (b)

None of these

⇒ The shear stress-strain graph for a newtonian fluid is a.

straight line

parabolic curve

hyperbolic curve

elliptical

⇒ The hammer blow in pipes occurs when.

there is excessive leakage in the pipe

the pipe bursts under high pressure of fluid

the flow of fluid through the pipe is suddenly brought to rest by closing of the valve

the flow of fluid through the pipe is gradually brought to rest by closing of the valve

⇒ The discharge through a channel of rectangular section will be maximum, if.

its depth is twice the breadth

ts breadth is twice the depth

its depth is thrice the breadth

its breadth is thrice the depth

⇒ The ratio of the inertia force to the __________ is called Euler's number.

pressure force

elastic force

surface tension force

viscous force

⇒ The top of the weir over which the water flows is known as.

sill or crest

nappe or vein

orifice

none of these

⇒ When a cylindrical vessel containing liquid is revolved about its vertical axis at a constant angular velocity, the pressure.

varies as the square of the radial distance

increases linearly as its radial distance

increases as the square of the radial distance

decreases as the square of the radial distance

⇒ In a depressed nappe.

the pressure below the nappe is atmospheric

the pressure below the nappe is negative

the pressure above the nappe is atmospheric

the pressure above the nappe is negative

⇒ A weir is said to be narrow-crested weir, if the width of the crest of the weir is __________ half the height of water above the weir crest.

equal to

less than

more than

None of these

⇒ When the Mach number is more than 6, the flow is called.

sub-sonic flow

sonic flow

super-sonic flow

hyper-sonic flow

⇒ When a body is placed over a liquid, it will sink down if.

gravitational force is equal to the upthrust of the liquid

gravitational force is less than the upthrust of the liquid

gravitational force is more than the upthrust of the liquid

none of the above

⇒ The most economical section of a rectangular channel is one which has hydraulic mean depth or hydraulic radius equal to.

half the depth

half the breadth

twice the depth

twice the breadth

⇒ Coefficient of velocity is defined as the ratio of.

actual velocity of jet at vena contracta to the theoretical velocity

area of jet at vena contracta to the area of orifice

actual discharge through an orifice to the theoretical discharge

none of the above