Hydraulics and Fluid Mechanics problems
- 1. A submerged body is said to be in a stable equilibrium, if its centre of gravity __________ the centre of buoyancy.
Options- A. coincides with
- B. lies below
- C. lies above Discuss
Correct Answer: lies below
- 2. A fluid whose viscosity does not change with the rate of deformation or shear strain is known as
Options- A. real fluid
- B. ideal fluid
- C. newtonian fluid
- D. non-newtonian fluid Discuss
Correct Answer: newtonian fluid
- 3. The power absorbed (in watts) in overcoming the viscous resistance of a footstep bearing is
Options- A.
- B.
- C.
- D.
Discuss
Correct Answer:
- 4. The total pressure on an immersed surface inclined at an angle ? with the liquid surface is
Options- A. wA
- B. wx
- C. wAx
- D. wAx/sin ? Discuss
Correct Answer: wAx
- 5. The flow in a pipe or channel is said to be non-uniform when
Options- A. the liquid particles at all sections have the same velocities
- B. the liquid particles at different sections have different velocities
- C. the quantity of liquid flowing per second is constant
- D. each liquid particle has a definite path Discuss
Correct Answer: the liquid particles at different sections have different velocities
- 6. A venturiflume is used to measure
Options- A. pressure of liquid
- B. discharge of liquid
- C. pressure difference between two points in a channel
- D. pressure difference between two points in a pipe Discuss
Correct Answer: discharge of liquid
- 7. The pressure measured with the help of a pressure gauge is called
Options- A. atmospheric pressure
- B. gauge pressure
- C. absolute pressure
- D. mean pressure Discuss
Correct Answer: gauge pressure
- 8. The velocity at which the flow changes from laminar flow to turbulent flow is called
Options- A. critical velocity
- B. velocity of approach
- C. sub-sonic velocity
- D. super-sonic velocity Discuss
Correct Answer: critical velocity
- 9. A flow is called hyper-sonic, if the Mach number is
Options- A. less than unity
- B. unity
- C. between 1 and 6
- D. none of these Discuss
Correct Answer: none of these
- 10. Reynold's number is the ratio of the inertia force to the
Options- A. surface tension force
- B. viscous force
- C. gravity force
- D. elastic force Discuss
Correct Answer: viscous force
More in Mechanical Engineering:
Programming
Copyright ©CuriousTab. All rights reserved.