| Kinematic similarity between model and prototype means |
A) The similarity of forces
B) The similarity of shape
C) The similarity of motion
D) The similarity of discharge
| Cauchy number is i. the ratio of inertial force to Elastic force in a flow ii. the square of Mach number |
A) Only (i)
B) Only (ii)
C) Both (i) and (ii)
D) Neither (i) nor (ii)
| In model similarity, if gravitational and inertia forces are the only important forces, then what is the discharge ratio (Note : Lr is the ratio of length dimension)? |
A) Lr3/2
B) Lr1/2
C) Lr5/2
D) Lr1/3
| Reynolds number may be defined as the ratio of |
A) viscous forces to inertial forces
B) inertial forces to viscous forces
C) elastic forces to pressure forces
D) gravity forces to inertial forces
| The scale effects in models can be |
A) Positive only
B) Negative only
C) Both positive and negative
D) None of the above
| Stanton diagram is a |
A) log-log plot of friction factor against Reynolds number
B) log-log plot of discharge against Reynolds number
C) log-log plot of friction factor against Euler number
D) log-log plot of discharge against Euler number
| The gases are considered incompressible when Mach number is |
A) equal to 1.0
B) equal to 0.5
C) more than 0.3
D) less than 0.2
| The discharge in an open channel is generally measured by |
A) Venturimeter
B) Orificemeter
C) Manometer
D) Venturiflume
| Euler number is related to |
A) Inertia force and pressure force
B) Inertia force and elastic force
C) Inertia force and viscous force
D) Inertia force and gravity force
| The performance of a hydraulic structure during a flood has been investigated in a 1/36 model based on Froude law of similarity. A flood wave passing through the model in 3 hours corresponds to the prototype period of |
A) 3 hours
B) 9 hours
C) 18 hours
D) 36 hours
