Question is ⇒ In a free vortex, velocity, Options are ⇒ (A) Decreases with radius, (B) Increase with radius, (C) Is constant, (D) None of these, (E) , Leave your comments or Download question paper.

Question is ⇒ In a free vortex, velocity, Options are ⇒ (A) Decreases with radius, (B) Increase with radius, (C) Is constant, (D) None of these, (E) , Leave your comments or Download question paper. Previous question Next question


Q1.	In a free vortex, velocity
A.	Decreases with radius [Wrong Answer]
B.	Increase with radius [Correct Answer]
C.	Is constant [Wrong Answer]
D.	None of these [Wrong Answer]
View Answer 18 -26 Explanation:- Answer : B Discuss it below : Himanshu Gupta Said on 2019-08-26 02:16:33 yes, A is correct. Kehomong Lim Said on 2019-05-01 13:36:31 A is correct Prashant Rajput Said on 2018-04-30 15:15:27 None of these bcoz for free vortex flow velocity is inversely proportional to radius. !! OOPS Login [Click here] is required to post your answer/result Help other students, write article, leave your comments

Previous question Next question

Also Read Similar Questions Below :

⇒ The pressure at the summit of a syphon is.
equal to atmospheric
less than atmospheric
more than atmospheric
none of the above

⇒ In a forced vortex motion, the velocity of flow is
directly proportional to its radial distance from axis of rotation
inversely proportional to its radial distance from the axis of rotation
inversely proportional to the square of its radial distance from the axis of rotation
directly proportional to the square of its radial distance from the axis of rotation

⇒ In which of the following the friction drag is generally larger than pressure drag?
a circular disc or plate held normal to flow
a sphere
a cylinder
an airfoil

⇒ The hydraulic grade line is
always above the centre line of pipe
never above the energy grade line
always sloping downward in the direction of flow
all of the above

⇒ A floating body is said to be in a state of stable equilibrium.
when its metacentric height is zero
when the metacentre is above the centre of gravity
when the metacentre is below the centre of gravity
only when its centre of gravity is below its centre of buoyancy

⇒ The shear stress distribution for a fluid flowing in between the parallel plates, both at rest, is
constant over the cross section
parabolic distribution across the section
zero at the mid plane and varies linearly with distance from mid plane
zero at plates and increases linearly to midpoint

⇒ An aeroplane works on
Archimedes' principle
Pascal's law
Bernoulli's principle
Stoke's law

⇒ If x is the distance from leading edge, then the boundary layer thickness in laminar flow varies as
x
x
x
x/7

⇒ For a stream line body, the predominant drag force is
Friction drag force
Pressure drag force
Total drag force
None of these

⇒ The turbine suitable for low heads and high flow rates is
Pelton-wheel
Francis
Keplan
All of these

⇒ An ice cube containing a lead piece in it is floating in a glass of water. As ice melts the water level will
Fall
Rise
Remain stationary
None of the above

⇒ If the velocity is zero over half of the cross-sectional area and is uniform over the remaining half, then the momentum correction factor is.
1
4/3
2
4

⇒ When a body is weighed in a liquid, the loss in its weight depends upon
Volume of the body
Mass of the body
Shape of the body
CG of the body

⇒ If the weight of a body immersed in a fluid exceeds the buoyant force, then the body will
rise until its weight equals the buoyant force
tend to move downward and it may finally sink
float
none of the above

⇒ The correct relationship among displacement thickness d, momentum thickness m and energy thickness e is.
d > m > e
d > e > m
e > m > d
e > d > m

⇒ In order to avoid cavitation the upstream edge of broad crested weir should have
Rounded corner
Sharp corner
Parabolic corner
None of these

⇒ The shear stress distribution for a fluid flowing in between the parallel plates, both at rest, is.
constant over the cross section
parabolic distribution across the section
zero at the mid plane and varies linearly with distance from mid plane
zero at plates and increases linearly to midpoint

⇒ The ratio of average velocity to maximum velocity for steady laminar flow in circular pipes is
1/2
2/3
3/2
2

⇒ A barometer is used to measure
Very low pressure
Very high pressure
Pressure difference between two points
Atmospheric pressure

⇒ The losses are more in
laminar flow
transition flow
turbulent flow
critical flow

⇒ As compared to flat plate force of jet on a semi-circular vane will be
Half
Equal
Double
Triple

⇒ The major loss of energy in long pipes is due to
sudden enlargement
sudden contraction
gradual contraction or enlargement
friction

⇒ The length of a pipe is 1 km and its diameter is 20 cm. If the diameter of an equivalent pipe is 40 cm, then its length is.
32 km
20 km
8 km
4 km

⇒ Two pipes of same length and diameters d and 2d respectively are connected in series. The diameter of an equivalent pipe of same length is.
less than d
between d and 1.5 d
between 1.5 d and 2d
greater than 2d

⇒ Two pieces of metal when immersed in a liquid have equal upthrust on them, then
Both pieces must have equal weig.hts
Both pieces must have equal densities
Both pieces must have equal volumes
Both are floating to the same depth

⇒ Bernoulli's equation is applied to
Venturimeter
Orifice meter
Pitot tube
All of these

⇒ If in a satellite orbiting the earth, a cork is immersed in a jar of water and released, it will
Rise
Sink
Remain where left
None of the above

⇒ Stanton diagram is a
log-log plot of friction factor against Reynolds number
log-log plot of relative roughness against Reynolds number
semi-log plot of friction factor against Reynolds number
semi-log plot of friction factor against relative roughness

⇒ 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
1/4
1/2
2/3

⇒ The value of friction factor 'f' for smooth pipes for Reynolds number 106 is approximately equal to.
0.1
0.01
0.001
0.0001