FLUID MECHANICS EXAM 1 EXAM
WITH CORRECT QUESTIONS AND
ANSWERS 2025
Equation for specific weight - CORRECT-ANSWERS>>>>gamma=density x height
How is shear stress related to viscosity? - CORRECT-ANSWERS>>>>T=(dynamic
viscosity)x(velocity gradient)
Equation for torque on rotating cylinders - CORRECT-ANSWERS>>>>T=FRi
Definition of viscosity - CORRECT-ANSWERS>>>>the resistance of a fluid to flow
How does viscosity relate to temperature? - CORRECT-ANSWERS>>>>As temperature
increases, viscosity increases for a gas and decreases for a liquid
Pressure at a point (pascals law) - CORRECT-ANSWERS>>>>if there are no shear stress
(no velocity gradient) the pressure at a point is the same in all directions
Body forces are only dependent on: - CORRECT-ANSWERS>>>>gravity (specific weight
of the body)
what is the basic equation for calculating the pressure variation of a static fluid? -
CORRECT-ANSWERS>>>>P2-P1=(specific weight)(Z1-Z2)
, What is gage pressure? - CORRECT-ANSWERS>>>>Its pressure relative to atmospheric
pressure
What are the 4 conditions that must be satisfied to use the Bernoulli equation? -
CORRECT-ANSWERS>>>>1. Steady flow
2. Incompressible fluid
3. Inviscid (viscous effects are negligible)
4. Along a streamline
What is the definition of a streamline? - CORRECT-ANSWERS>>>>Lines
which are everywhere tangent to the local velocity vector
For what condition will the pressure gradient across a stream line be zero? - CORRECT-
ANSWERS>>>>If the streamlines do not curve, i.e. are straight
What is the velocity at the stagnation point on a body - CORRECT-ANSWERS>>>>V=0
WITH CORRECT QUESTIONS AND
ANSWERS 2025
Equation for specific weight - CORRECT-ANSWERS>>>>gamma=density x height
How is shear stress related to viscosity? - CORRECT-ANSWERS>>>>T=(dynamic
viscosity)x(velocity gradient)
Equation for torque on rotating cylinders - CORRECT-ANSWERS>>>>T=FRi
Definition of viscosity - CORRECT-ANSWERS>>>>the resistance of a fluid to flow
How does viscosity relate to temperature? - CORRECT-ANSWERS>>>>As temperature
increases, viscosity increases for a gas and decreases for a liquid
Pressure at a point (pascals law) - CORRECT-ANSWERS>>>>if there are no shear stress
(no velocity gradient) the pressure at a point is the same in all directions
Body forces are only dependent on: - CORRECT-ANSWERS>>>>gravity (specific weight
of the body)
what is the basic equation for calculating the pressure variation of a static fluid? -
CORRECT-ANSWERS>>>>P2-P1=(specific weight)(Z1-Z2)
, What is gage pressure? - CORRECT-ANSWERS>>>>Its pressure relative to atmospheric
pressure
What are the 4 conditions that must be satisfied to use the Bernoulli equation? -
CORRECT-ANSWERS>>>>1. Steady flow
2. Incompressible fluid
3. Inviscid (viscous effects are negligible)
4. Along a streamline
What is the definition of a streamline? - CORRECT-ANSWERS>>>>Lines
which are everywhere tangent to the local velocity vector
For what condition will the pressure gradient across a stream line be zero? - CORRECT-
ANSWERS>>>>If the streamlines do not curve, i.e. are straight
What is the velocity at the stagnation point on a body - CORRECT-ANSWERS>>>>V=0
