CRACKGATE
EDUCATION
House No: 237;
Sector – 5; Chiranjeev Vihar, Ghaziabad
Contact No : 09678534833; 09555921800
PRACTICE WORKSHEET GATE-2015
MECHANICAL ENGINEERING
TOPIC: FLUID MECHANICS
Difficulty Level: 1
SET ONE: Each question has several
entries, choose the most appropriate one
01) If no resistance is
encountered due to displacement then such a substance is called
a) fluid b)
real gas c) ideal fluid
d) visco-elastic fluid
02) The volumetric change of
a fluid due to a resistance is called as
a) volumetric strain, b)
volumetric index
c) compressibility d)
cohesion
03) Mercury does not wet
glass due to a property of liquids known as
a) adhesion b)
cohesion
c) viscosity d)
surface tension
04) The surface tension of
Mercury at normal temperature compared to that of water is
a) more b)
less
c) depends upon the glass tube d) equal
05) Kinematic viscosity is
dependent upon
a) pressure b)
distance c) density d) flow
06) Alcohol is used in
manometers because
a) it is clearly visible b)
it provides suitable meniscus
c) it can provide longer column due to its low density
d) it has low surface tension
07) The buoyancy depends upon
a) mass of liquid displaced b) viscosity of the liquid
c) pressure of the displaced liquid d) none of the above
08) The centre of gravity of
the volume of the liquid displaced by an immersed body is called
a) meta-centre b)
centre of gravity
c) centre of pressure d)
centre of buoyancy
09) Surface energy per unit
area of a surface is numerically equal to
a) atmospheric pressure b)
surface tension
c) force of cohesion d) viscosity
10) Flow occurring in a
pipeline when a valve is being opened is
a) steady flow b)
unsteady flow
c) laminar flow d)
vortex flow
For answers contact at 09555921800
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