| 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
| Weber number can be best connected to which of the following |
A) Formation of liquid droplet
B) High speed flow of a gas
C) Flow in closed conduits
D) Sloping interface between fluids of different densities
| The model and prototype are dynamically similar if both the systems have |
A) Similarity of forces
B) Similarity of motion
C) Similarity of shape
D) Similarity of discharge
| Which of the following number deal with the Cavitation Phenomenon? |
A) Thoma Number
B) Euler Number
C) Reynolds Number
D) Weber Number
| The ratio of the inertia and viscous forces acting in any flow ignoring other forces is called |
A) Euler number
B) Froude number
C) Reynolds number
D) Weber number
| Effect of compressibility of fluid can be neglected if Mach number is |
A) equal to 1
B) greater than 1
C) less than 1 but greater than 0.4
D) less than 0.4
| Weber number is a ratio of |
A) Surface tension force to inertia force
B) Surface tension force to elastic force
C) Inertia force to surface tension force
D) Elastic force to surface tension force
| The pressure coefficient is the ratio of pressure forces to |
A) Gravity forces
B) Viscous forces
C) Inertia forces
D) Buoyant forces
| A proposed model of river stretch of 20 km is to have a horizontal scale of (1/1000) and vertical scale of (1/400). If the normal discharge, width and depth of river are 182 m3/s, 100 m and 2 m, respectively, then model discharge would be |
A) 0.2275 × 10-2 m3/s
B) 0.2275 × 10-4 m3/s
C) 0.2275 × 10-6 m3/s
D) 0.2275 × 10-8 m3/s
| In a supersonic flow, a diverging passage results in decrease of i. pressure ii. density iii. velocity |
A) Only (i)
B) (i) and (ii)
C) (ii) and (iii)
D) (i), (ii) and (iii)
