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Fluid Mechanics
Fluid Mechanics Written Test
Quiz 1
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Q.1
Force exerted by a jet on a stationery plate happens in how many cases?
a) 3 cases
b) 2 cases
c) 1 case
d) Nil
Q.2
Force exerted by a jet on a moving plate happens in how many cases?
a) 3 cases
b) 2 cases
c) 1 case
d) Nil
Q.3
In a stationery vertical plate, the jet after striking the plate will move _______
a) In opposite direction
b) Along the plate
c) Perpendicular to the plate
d) Parallel to the plate
Q.4
At what angle does the jet deflect after striking a stationery vertical plate?
a) 30
b) 60
c) 90
d) 0
Q.5
The velocity component after striking the surface will be________
a) One
b) Zero
c) Infinity
d) Negative
Q.6
Which among the following is the formula for Force when it strikes the plate?
a) pav2
b) pav
c) pa
d) maE
Q.7
To derive pavwe take final velocity minus the initial velocity.
a) True
b) False
Q.8
The mass of water per sec striking the plate is_________
a) pav2
b) pav
c) pa
d) maE
Q.9
Which among the following is formula for force when it acts along the direction of flow?
a) pav2Sin2θ
b) pav Sin2θ
c) pa Sin2θ
d) maE Sin2θ
Q.10
Which among the following is a formula for force when it acts perpendicular to the direction of flow?
a) pav2 SinθCosθ
b) pav Sin2θ
c) pa Sin2θ
d) maE Sin2θ
Q.11
A jet strikes a curved plate at its ______
a) Sides
b) Surface
c) Centre
d) Does not strike
Q.12
During a weak jump, the value of Froude lies in between________
a) 1 to 2.5
b) 2.5 to 3.5
c) Less than 1
d) Zero
Q.13
During an oscillating jump, the value of Froude lies in between________
a) 1 to 2.5
b) 2.5 to 4.5
c) Less than 1
d) Zero
Q.14
A jet after striking a smooth plate comes out with a __________ velocity.
a) Increased
b) Decreased
c) Same
d) Zero
Q.15
Component of velocity in direction of jet is -VCosθ
a) True
b) False
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