FLUID MECHANICS FINAL PAPER TESTED
QUESTIONS WITH VERIFIED ANSWERS
COMPLETE STUDY SHEET
●● Fluids
Answer: substance which deforms continuously, or flows when
subjected to shearing forces
●● Fluid statics
Answer: study of fluid at rest
●● Fluid kinematics
Answer: study of fluid at motion
●● Fluid dynamics
Answer: study of the effects of forces on fluid motion
●● Liquids
Answer: a type of fluid which has free surface, and a given mass
occupies given volume of a container
●● Gases
,Answer: subdivision of fluid which occupies all portions of the container
and follows gas law that gives relation between temperature, pressure,
and volume
●● Ideal fluid
Answer: fluid that does not resist shear stress
●● Newtonian fluid
Answer: stress versus strain rate curve is linear and passes through the
origin
●● Viscosity
Answer: the slope of stress vs strain graph for fluid
●● Plastic
Answer: shear stress must reach a certain minimum before flow
commences
●● Dilatant substance
Answer: viscosity increases with the rate of shear e.g. quicksand
●● Thixotropic substances
Answer: viscosity decreases with length of time shear force is applied
, ●● Rheopectic substances
Answer: viscosity increases with length of time shear force is applied
●● Density
Answer: ratio of mass to volume
●● Specific weight
Answer: ratio of weight to volume
●● Specific gravity
Answer: ratio of specific weight of a given fluid to the specific weight of
water at the standard reference temperature of 4 degrees celsius
●● Specific heat
Answer: property that describes the capacity of a substance to store
thermal energy
●● Specific volume
Answer: ratio of volem and density
●● Internal energy
QUESTIONS WITH VERIFIED ANSWERS
COMPLETE STUDY SHEET
●● Fluids
Answer: substance which deforms continuously, or flows when
subjected to shearing forces
●● Fluid statics
Answer: study of fluid at rest
●● Fluid kinematics
Answer: study of fluid at motion
●● Fluid dynamics
Answer: study of the effects of forces on fluid motion
●● Liquids
Answer: a type of fluid which has free surface, and a given mass
occupies given volume of a container
●● Gases
,Answer: subdivision of fluid which occupies all portions of the container
and follows gas law that gives relation between temperature, pressure,
and volume
●● Ideal fluid
Answer: fluid that does not resist shear stress
●● Newtonian fluid
Answer: stress versus strain rate curve is linear and passes through the
origin
●● Viscosity
Answer: the slope of stress vs strain graph for fluid
●● Plastic
Answer: shear stress must reach a certain minimum before flow
commences
●● Dilatant substance
Answer: viscosity increases with the rate of shear e.g. quicksand
●● Thixotropic substances
Answer: viscosity decreases with length of time shear force is applied
, ●● Rheopectic substances
Answer: viscosity increases with length of time shear force is applied
●● Density
Answer: ratio of mass to volume
●● Specific weight
Answer: ratio of weight to volume
●● Specific gravity
Answer: ratio of specific weight of a given fluid to the specific weight of
water at the standard reference temperature of 4 degrees celsius
●● Specific heat
Answer: property that describes the capacity of a substance to store
thermal energy
●● Specific volume
Answer: ratio of volem and density
●● Internal energy
