Q1:

The Bernoulli’s equation refers to conservation of:

Q2:

Navier Stoke’s equation represents the conservation of:

Q3:

Bernoulli's equation represents the:

Q4:

How is the velocity coefficient Cv, the discharge coefficient Cd, and the contraction coefficient Cc of an orifice related?

Q5:

Which one of the following is measured by a Rotameter?

Q6:

The necessary and sufficient condition which brings about separation of boundary layer is

Q7:

Boundary layer is defined as:

Q8:

In the boundary layer, the flow is:

Q9:

Which non-dimensional number relates the thermal boundary layer and hydrodynamic boundary layer?

Q10:

The laminar boundary layer thickness, δ at any point x for flow over a flat plate is given by,$\delta /x=$

Q11:

A horizontal pipe of cross-section area 5 cm² is connected to a venturimeter of throat area 3 cm² as shown in the below figure. The manometer reading is equivalent to 5 cm of water. The discharge in cm³/s is nearly:

Q12:

The velocity of a water stream is being measured by a L-shaped Pilottube and the reading is 20 cm then what is the approximate value of velocity?

Q13:

Match List-I with List-II and select the correct answer using the codes given below the lists:

List-I	List-II
A. Rota meter	1. Vena contracta
B. Venturimeter	2. End contraction
C. Orifice meter	3. Tapering tube
D. Flow nozzle	4. Convergent – divergent
	5. Bell mouth entry

Codes:

$\begin{array}{cccc}A& B& C& D\end{array}$

Q14:

Which one of the statements is correct for a forced vortex?

Q15:

For linear distribution of velocity in the boundary layer on a flat plate, what is the ratio of displacement thickness (δ*) to the boundary layer thickness$\left(\delta \right)?$

Q16:

The developer of boundary layer zones labeled P, Q, R and S over a flat plate is shown in the given figure.

Based on this figure, match List-I (Boundary layer zones) with List-II (Type of boundary layer) and select the correct answer:

List-I	List-II
A. P	1. Transitional
B. Q	2. Laminar viscous sub-layer
C. R	3. Laminar
D. S	4. Turbulent

Codes:

$\begin{array}{cccc}A& B& C& D\end{array}$

Q17:

In a laminar boundary layer over a flat plate, what would be the ratio of wall shear stresses ${\tau }_1$and ${\tau }_2$ at the two sections which lie at distances X₁ = 30 cm and X₂ = 90 cm from the leading edge of the plate?

Q18:

Velocity for flow through a pipe, measured at the centre is found to be 2 m/s. Reynolds number is around 800.What is the average velocity in the pipe?

Q19:

A Pitot-static tube (C = 1) is used to measure air flow with water in the differential manometer and a gauge difference of 75 mm, what is the value of air speed if ρ = 1.16 kg/m ?

Q20:

An open circular cylinder 1.2 m height is filled with a liquid to its top. The liquid is given a rigid body rotation about the axis of the cylinder and the pressure at the centre line at the bottom surface is found to be 0.6 m of liquid. What is the ratio of Volume of liquid spilled out of the cylinder to the original volume?

Q21:

The velocity distribution in a turbulent boundary layer is given by u/U= (y/ δ)^1/7.

What is the displacement thickness?

Q22:

A pipe carries a flow of an oil of R_D = 0.85. A pitot-static tube is inserted into a pipe to measure the velocity at point M. If differential mercury oil gauge connected to pitot tube indicate a reading 4 cm. Calculate the velocity at M. Coefficient of pitot tube = 0.99.

Q23:

List of few devices given match the device with their corresponding use.

	Group-I		Group-II
P.	Anemometer	1.	Capillary potential of soil water
Q.	Hygrometer	2.	Fluid velocity at a specific point in the flow stream
R.	Pilot tube	3.	Water vapour content of air
S.	Tensiometer	4.	Wind speed

 

Q24:

A 4 cm diameter orifice in vertical side of tank discharges water. The water surface in the tank is at a constant level of 2m above the centre of orifice, if head loss in the orifice is 0.20 and coefficient of contraction is 0.63 calculate coefficient of velocity and discharge

Q25:

Water (${\gamma }_w=9.879$kN/m³) flows with a flow rate of 0.3 m³/s through a pipe AB of 10 m length and of uniform cross-section. The end B is above end A and the pipe makes an angle of 30^o to the horizontal for a pressure of 12 kN/m² at the end B, the corresponding pressure at the end A is