Q.1) The property of liquid which offers resistance to the movement of one layer of liquid over another adjacent layer of liquid, is called –
A) Viscosity
B) Compressibility
C) Surface Tension
D) Capillary
Option (A)
Q.2) With an increase in size of tube, the rise or depression of liquid in the tube due to surface tension will :
A) Decrease
B)I ncrease
C) Remain unchanged
D) Depends upon characteristics of liquid
Option (A)
Q.3) When the pressure intensity at a point is more than the local atmospheric pressure, then the difference of these two pressures is called –
A) Gauge pressure
B) Absolute pressure
C) Positive gauge pressure
D) Vacuum pressure
Option (C)
Q.4) The pressure of liquid measured with the help of a piezometer tube is :
A) Vacuum pressure
B) Gauge pressure
C) Absolute pressure
D) Atmospheric pressure
Option (B)
Q.5) The liquid used in manometers should have :
A) Low density
B) High density
C) Low surface tension
D) High surface tension
Option (D)
Q.6) The buoyancy depends upon the :
A) Weight of the liquid displaced
B) Pressure with which the liquid is displaced
C) Viscosity of the liquid
D) Compressibility of the liquid
Option (A)
Q.7) The imaginary line drawn in the fluid in such a way that the tangent to any point gives the direction of motion at that point, is known as :
A) Path line
B) Stream line
C) Steak line
D) Potential line
Option (B)
Q.8) A flow through a long pipe at a constant rate is called :
A) Steady uniform flow
B) Steady non-uniform flow
C) Unsteady uniform flow
D) Unsteady non-uniform flow
Option (A)
Q.9) Barometer is used to measure :
A) Velocity of liquid
B) Atmospheric pressure
C) Pressure in pipes and channels
D) Difference of pressure between two points in a pipe
Option (B)
Q.10) A structure used to dam up a stream or river over which the water flows is called :
A) Orifice
B) Notch
C) Weir
D) Dam
Option (C)
Q.11) An air vessel is provided at the summit in a syphon to :
A) Avoid interruption in the flow
B) Increase discharge
C) Increase velocity
D) Maintain pressure difference
Option (A)
Q.12) The critical depth meter is used to measure :
A) Velocity of flow in an open channel
B) Depth of flow in an open channel
C) Hydraulic jump
D) Depth of channel
Option (C)
Q.13) A pelton wheel is :
A) Tangential flow impulse turbine
B) Inward flow impulse turbine
C) Outward flow impulse turbine
D) Inward flow reaction turbine
Option (A)
Q.14) The cavitation in the hydraulic machine :
A) Causes noise and vibration of various parts
B) Reduces the discharge of a turbine
C) Causes sudden drop in power output and efficiency
D) All of the above
Option (D)
Q.15) Multi-stage centrifugal pumps are used to :
A) Give high discharge
B) Produce high heads
C) Pump viscous fluids
D) All of the above
Option (B)
Q.16) In a reciprocating pump, air vessels are used to –
A) Smoothen the flow
B) Reduce suction head
C) Increase delivery head
D) Reduce acceleration head
Option (D)
Q.17) The type of centrifugal pump preferred for a specific speed of 20 r.p.m. is :
A) Slow speed pump with radial flow at outlet
B) Medium speed pump with radial flow at outlet
C) High speed pump with radial flow at outlet
D) High speed pump with axial flow at outlet
Option (A)
Q.18) Which of the following pump is preferred for flood control and irrigation applications?
A) Centrifugal pump
B) Axial flow pump
C) Mixed flow pump
D) Reciprocating pump
Option (B)
Q.19) Which of the following pump is successfully used for lifting water to the boilers?
A) Centrifugal pump
B) Reciprocating pump
C) Jet pump
D) Air-lift pump
Option (C)
Q.20) A hydraulic coupling belongs to the category of :
A) Power absorbing machines
B) Power developing machines
C) Energy transfer machines
D) Energy generating machines
Option (C)
