1. Which of the factors primarily decide whether the flow in a circular pipe is laminar or turbulent?
[A] The Pressure gradient along the length of the pipe
[B] The Prandtl Number
[C] The Reynold’s Number
[D] The dynamic viscosity coefficient
Answer: Option C
2. Shear stress is caused due to _____.
[A] Temperature
[B] Friction
[C] Pressure
[D] Volume
Answer: Option B
3. When is orifice called ‘large orifice’?
[A] if the head of liquid is less than 2.5 times the depth of orifice
[B] If the head of liquid is less than 5 times the depth of orifice
[C] If the head of liquid is less Hence, 4 times the depth of orifice
[D] If the head of liquid is less than 1.5 times the depth of orifice
Answer: Option B
4. Upon which principle does a pitot tube work?
[A] Bernoulli’s principle
[B] Stagnation Pressure Principle
[C] Euler’s equation
[D] Both A and B
Answer: Option D
5. What does a pitot tube measure?
[A] Pressure
[B] Velocity
[C] Discharge
[D] None
Answer: Option B