1. Dynamic similarity exists when the model and the prototype have the same
[A] Length scale ratio and time scale ratio
[B] Length scale ratio and velocity scale ratio
[C] Length scale ratio, time scale ratio and velocity scale ratio
[D] Length scale ratio, velocity scale ratio and force scale ratio
Answer: Option D
2. An orifice is called a large orifice if water head is
[A] Twice the diameter of the orifice
[B] Five the diameter of the orifice
[C] Four times the diameter of the orifice
[D] Thrice times the diameter of the orifice
Answer: Option B
3. Hot wire anemometer is used for measuring which of the following parameter
[A] Turbulence
[B] Pressure
[C] Velocity
[D] Discharge
Answer: Option C