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Department of Civil Engineering
Hydraulics
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Question 1 : A column of oil, having specific gravity 0.6 equivalent to pressure of 3.6 kg/cm2 will be
Option-1 :30 cm of oil
Option-2 :36cm of oil
Option-3 :60 cm of oil76 cm of oil
Question 2 : Alcohol is used in manometers because
Option-1 :alcohol vaporises quickly
Option-2 :alcohol is cheeper than mercury
Option-3 :alcohol is large value of bulk modulus of elasticity
Option-4 :alcohol is lighter as such gives longer length of coloumn for precise measurment
Question 3 : 1atm. pressure is equivalent to
Option-1 :1.315kgf/cm2
Option-2 :1000newtons
Option-3 :760 mm Hg
Option-4 :14.7 pascals
Question 4 : A piezometer cannot be used for pressure measurement in pipes when
Option-1 :the pressure is very high
Option-2 :the pressure is very low
Option-3 :the velocity of fluid is very high
Option-4 :the fluid in the pipe is a gas
Question 5 : Vaccuum pressure is equivalent to
Option-1 :Atmospheric pressure -absolute pressure
Option-2 :Atmospheric pressure+absolute pressure
Option-3 :Absolute pressure -atmospheric pressure
Option-4 :Absolute pressure +atmospheric pressure
Question 6 : If H is the depth o f water retained by a vertical wall the height of centre of pressure abover the bottom is
Option-1 :H/3
Option-2 :2H/3
Option-3 :2H
Question 7 : If H is the depth of water retained by a vertical wall the height of centre of pressure above the bottom is
Option-1 :H/3
Option-2 :2H/3
Option-3 :2H/1
Option-4 :H/5
Question 8 : An ideal fluid
Option-1 :is frictionless and incompressible
Option-2 :obey'as Newton's low of velocity
Option-3 :is similar to gas
Option-4 :is very viscous
Question 9 : Flow of water in pipe of diameters more than 3m can be measured by
Option-1 :pilot tube
Option-2 :irifice plate
Option-3 :veuturimeter
Option-4 :rotameter
Question 10 : The discharge formule Q= cd root 2gh*A is used for rectangular
Option-1 :small orifice only
Option-2 :large orifice only
Option-3 :small and large orifice only
Option-4 : for all types of orifice
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