Mechanical Engineering MCQ Question Papers: DRDO, ISRO, Interview

Subject: Fluid Mechanics 14

**Part 2: List for questions and answers of Fluid Mechanics**

**Q1. The rate of increase of velocity with respect to change in the position of fluid particle in**

a flow field is called as

a) Local acceleration

b) Temporal acceleration

c) Convective acceleration

d) All of the above

**Q2. Blood circulation through arteries is**

a) A laminar flow

b) A turbulent flow

c) Both a and b

d) None of these

**Q3. The component of acceleration due to change in the direction of velocity vector is called as**

a) Direction acceleration

b) Tangential acceleration

c) Normal acceleration

d) Cannot say

**Q4. Viscous forces are not present in**

a) Rotational flow

b) Rotational flow

c) Laminar flow

d) None of the above

**Q5. Which acceleration has a nonzero value in uniform flow?**

a) Local acceleration

b) Convective acceleration

c) Both local as well as convective acceleration

d) Unpredictable

**Q6. If stream function (Ψ) satisfies the Laplace equation, it is a possible case of**

a) A circular flow

b) A rotational flow

c) An irrotational flow

d) None of the above

**Q7. The imaginary line drawn in the fluid in such a way that the tangent to any point gives the direction of motion at the point, is called as**

a) Path line

b) Streak line

c) Filament line

d) Stream line

**Q8. The actual path followed by a fluid particle as it moves during a period of time, is called as**

a) Path line

b) Streak line

c) Filament line

d) Stream line

**Q9. In which method of describing fluid motion, the observer remains stationary and observes changes in the fluid parameters at a particular point only?**

a) Lagrangian method

b) Eulerian method

c) Stationary method

d) All of the above

**Q10. According to equation of continuity when waterfalls its speed increases, while its cross sectional area**

a) Increases

b) Decreases

c) Remain same

d) Different

**Q11. If layers of fluid have frictional force between them then it is known as**

a) Viscous

b) Non-viscous

c) Incompressible

d) Both a and b

**Q12. Venturi relation is one of applications of the**

a) Equation of continuity

b) Bernoulli’s equation

c) Light equation

d) Speed equation

**Q13. Simplified equation of continuity is represented as**

a) A1v1 = A2v2

b) A1v2 = A2v2

c) A1v1 = A1v2

d) A2v1 = A1v1

**Q14. If every particle of fluid has irregular flow, then flow is said to be**

a) Laminar flow

b) Turbulent flow

c) Fluid flow

d) Both a and b

**Q15. Chimney works best on principle of**

a) Equation of continuity

b) Bernoulli’s equation

c) Light equation

d) Speed equation

**Q16. Change in potential energy is measured as difference of**

a) Mgf

b) Mgh

c) Mg

d) Mgt

**Q17. Density of air is round about equal to**

a) 1.2041 kg/m^3

b) 1.3041 kg/m^3

c) 1.4041 kg/m^3

d) 1.5041kg/m^3

**Q18. Fundamental equation that relates pressure to fluid’s speed and height is known as**

a) Equation of continuity

b) Bernoulli’s equation

c) Light equation

d) Speed equation

**Q19. Change in kinetic energy is measured as difference of**

a) 1/2(mv)^2

b) (mv)^2

c) 1/2(mv)

d) 1/2(m)^2

**Q20. The cylindrical portion of short length, which connects converging and diverging section of venturimeter, is called as**

a) Diffuser

b) Connector

c) Throat

d) Manometer tube

**Part 2: List for questions and answers of Fluid Mechanics**

Q1. Answer: c

Q2. Answer: a

Q3. Answer: c

Q4. Answer: b

Q5. Answer: a

Q6. Answer: c

Q7. Answer: d

Q8. Answer: a

Q9. Answer: a

Q10. Answer: b

Q11. Answer: a

Q12. Answer: b

Q13. Answer: a

Q14. Answer: b

Q15. Answer: b

Q16. Answer: b

Q17. Answer: a

Q18. Answer: b

Q19. Answer: a

Q20. Answer: c