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ESE CE: Fluid Mechanics Champion Quiz 2
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Question 1
The velocity field for flow is given by
and the density varies as p = p0 exp (-2t). In order that the mass is conserved, the value of
and the density varies as p = p0 exp (-2t). In order that the mass is conserved, the value of
λ should be
Question 2
Assertion (A): A Pitot tube works on the principle of converting kinetic energy into potential energy.
Reason (A): The oncoming upstream velocity of fluid decelerates and comes to rest at the stagnation point at the tip of the Pitot tube.
Reason (A): The oncoming upstream velocity of fluid decelerates and comes to rest at the stagnation point at the tip of the Pitot tube.
Question 3
Bernoulli's equation is applicable between any two points in
Question 4
Assertion (A): It takes longer to drain a reservoir with a long vertical pipe taken down from its bottom discharging into atmosphere than with an orifice at the bottom.
Reason (R): The relative height of the water surface elevation in the reservoir compensates for the friction loss in the pipe besides the entry and exit losses in the pipe.
Reason (R): The relative height of the water surface elevation in the reservoir compensates for the friction loss in the pipe besides the entry and exit losses in the pipe.
Question 5
The velocity potential function is given by an expression 
The velocity component in x direction is
The velocity component in x direction is Question 6
Streamline, path line and streak line are identical when the______.
Question 7
Match List-I (Variable) with List-II (Dimensional expression) and select the correct answer using the codes given below the lists:
List-I
A. Dynamic viscosity
B. Moment of momentum
C. Power
D. Bulk modulus
List-II
1) ML2T-3
2) ML-1T-2
3) ML-1T-1
4) ML-2T-2
5) ML2T-1
List-I
A. Dynamic viscosity
B. Moment of momentum
C. Power
D. Bulk modulus
List-II
1) ML2T-3
2) ML-1T-2
3) ML-1T-1
4) ML-2T-2
5) ML2T-1
Question 8
Match List-I with List-II and select the correct answer using the codes given below the lists:
List-I
A. Lubricantion
B. Rise of water in trees
C. Formation of droplets
D. Cavitation
Lists-II
1. Capillary
2. Vapour pressure
3. Viscosity
4. Surface tension
List-I
A. Lubricantion
B. Rise of water in trees
C. Formation of droplets
D. Cavitation
Lists-II
1. Capillary
2. Vapour pressure
3. Viscosity
4. Surface tension
Question 9
The difference in pressure (in N/m2) across an air bubble or diameter 0.002 m immersed in water (surface tension = 0.072 N/m) is ______.
Question 10
Statement(I): As temperature increases, viscosity of air decreases.
Statement(II): As temperature increases, activity of the air molecules increases.
Statement(II): As temperature increases, activity of the air molecules increases.
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Oct 22ESE & GATE CE
