Q.1) The variation in the volume of a liquid with the variation of pressure is called its –
A) Surface tension
B) Compressibility
C) Capillarity
D) Viscosity
Option (B)
Q.2) A manometer is used to measure –
A) Atmospheric pressure
B) Pressure in pipes and channels
C) Pressure in venturimeter
D) Difference of pressures between two points in a pipe
Option (B)
Q.3) The centre of gravity of the volume of the liquid displaced is called –
A) Centre of pressure
B) Centre of buoyancy
C) Metacentre
D) Centre of mass
Option (B)
Q.4) A body floating in a liquid is said to be in neutral equilibrium, if its metacentre –
A) Coincides with its centre of gravity
B) Lies above its centre of gravity
C) Lies below its centre of gravity
D) Lies between centre of buoyancy and centre of gravity
Option (A)
Q.5) The flow in a pipe or channel is said to be uniform when –
A) The liquid particles at all sections have the same velocities
B) The liquid particles at different sections have different velocities
C) The quantity of liquid flowing per second is constant
D) Each liquid particle has a definite path
Option (A)
Q.6) A flow whose streamline is represented by a curve, is called –
A) 1 – D flow
B) 2 – D flow
C) 3 – D flow
D) 4 – D flow
Option (B)
Q.7) The pressure of liquid flowing through the divergent portion of a venturimeter –
A) Remains constant
B) Increases
C) Decreases
D) Depends upon mass of liquid
Option (C)
Q.8) The magnitude of water hammer depends upon the –
A) Elastic properties of the pipe material
B) Elastic properties of liquid flowing through the pipe
C) Speed at which the valve is closed
D) All of the above
Option (D)
Q.9) When the flow in an open channel is gradually varied, the flow is said to be –
A) Steady uniform flow
B) Steady non-uniform flow
C) Unsteady uniform flow
D) Unsteady non-uniform flow
Option (B)
Q.10) If the depth of water in an open channel is greater than the critical depth, the flow is called –
A) Critical flow
B) Turbulent flow
C) Tranquil flow
D) Torrential flow
Option (C)
Q.11) In a venturiflume, the flow takes place at –
A) Atmospheric pressure
B) Gauge pressure
C) Absolute pressure
D) None of the above
Option (A)
Q.12) A fluid having no viscosity is known as –
A) Real fluid
B) Ideal fluid
C) Newtonian fluid
D) Non-Newtonian fluid
Option (B)
Q.13) The velocity at which the flow changes from laminar to turbulent flow is called –
A) Critical velocity
B) Velocity of approach
C) Sub-sonic velocity
D) Super-sonic velocity
Option (A)
Q.14) Reynold’s number is the ratio of the inertia force to the –
A) Surface tension force
B) Viscous force
C) Gravity force
D) Elastic force
Option (B)
Q.15) Slip of a reciprocating pump is defined as the –
A) Slip (η) = Qa/Qt
B) Slip (η) = Qa + Qt
C) Slip (η) = Qa – Qt
D) Slip (η) = Qa x Qt
Option (C)
Q.16) Which of the following pump is suitable for small discharge and high heads?
A) Centrifugal pump
B) Axial flow pump
C) Mixed flow pump
D) Reciprocating pump
Option (D)
Q.17) Which of the following pump is generally used to pump highly viscous fluid?
A) Centrifugal pump
B) Reciprocating pump
C) Air lift pump
D) Screw pump
Option (D)
Q.18) A centrifugal pump will start delivering liquid only when the pressure rise in the impeller is equal to the –
A) Kinetic head
B) Velocity head
C) Manometric head
D) Static head
Option (C)
Q.19) The cavitation in a hydraulic machine is mainly due to –
A) Low velocity
B) High velocity
C) Low pressure
D) High pressure
Option (C)
Q.20) Which of the following turbine is preferred for 0 to 25 m head of water?
A) Pelton wheel
B) Kaplan turbine
C) Francis turbine
D) None of the above
Option (B)
