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WorksheetsFM Lab Quiz 1
Total questions: 20
Worksheet time: 10mins
The cylindrical portion of short length, which connects converging and diverging section of venturimeter, is called as
diffuser
connector
throat
manometer tube
Which of the following devices does not use Bernoulli's equation as its working principle?
Venturimeter
Orifice-meter
Pitot tube
None of the above
In a steady, ideal flow of an incompressible fluid, total energy at any point of the fluid is always constant. This theorem is known as
Euler's theorem
Bernoulli's theorem
Continuity Euation
Pascal law
The pressure at the section of minimum cross sectional area is
Constant
minimum
Maximum
none of these
Relative density of mercury is
1
13.6
9.81
10
The relation between head of water and head of mercury in u tube manometer is
h=12.6 hm
h= 13.6 hm
h=hm(SwSm−1)
Both A and C
The continuity equation is the result of application of the following law to the flow field
First law of thermodynamics
Conservation of energy
Newtons second law of motion
Conservation of mass
The Bernoulli's equation is the result of application of the following law to the flow field
First law of thermodynamics
Conservation of energy
Newtons second law of motion
Conservation of mass
Which is the cheapest device for measuring flow / discharge rate.
Venturimeter
Pitot tube
Orificemeter
The principle of Orificemeter is same as that of Venturimeter.
True
False
Coefficient of discharge for venturimeter is
0.96-0.98
1.2-1.4
0.5-0.6
0.62
Proper explanation for metacentre is:
Point at which line of action of force meets the normal axis of body when it is given angular displacement
Intersection of line passing through new centre of buoyancy and centre of gravity.
point about which body starts oscillating when it is given small angular displacement
All of the mentioned
The metacentric height is the distance between the
centre of gravity of the floating body and the centre of buoyancy
centre of gravity of the floating body and the metacentre
metacentre and centre of buoyancy
original centre of buoyancy and new centre of buoyancy
The increase in metacentric height leads to
Increase stability
decrease stability
decrease comfort of passengers
Both A and C
Stable equilibrium of floating bodies is
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
Head Means
Energy
Energy per unit weight
Sum of all energy
None
The unit of each term in bernoullis equation is in
Joule
KN
mitre
n/m^2
The stability of floating is govern by
Centre of Buoyancy
Centre of gravity
Metacentre
Any of the above
Buoyant force is equal to
weight of the object
weight of the liquid displaced
weight of pontoon
weight of passengers
Coefficient of discharge is
actual discharge/ theoretical velocity
actual discharge/ area
actual discharge/ theoretical discharge
Theoretical discharge /actual discharge
