Hydraulic and Fluid Mechanics

211. Poise is the unit of

1. Surface tension
2. Capillarity
3. Viscosity
4. Shear stress in fluids

View answer

212. Practical fluids

1. Are viscous
2. Possess surface tension
3. Are compressible
4. Possess all the above properties

View answer

213. Pressure of the order of 10" torr can be measured by

1. Bourdon tube
2. Pirani Gauge
3. Micro-manometer
4. Lonisation gauge

View answer

214. Principle of similitude forms the basis of

1. Comparing two identical equipments
2. Designing models so that the result can be converted to prototypes
3. Comparing similarity between design and actual equipment
4. Hydraulic designs

View answer

215. Property of a fluid by which its own molecules are attracted is called

1. Adhesion
2. Cohesion
3. Viscosity
4. Compressibility

View answer

216. Property of a fluid by which molecules of different kinds of fluids are attracted to each other is called

1. Adhesion
2. Cohesion
3. Viscosity
4. Compressibility

View answer

217. Rain drops are spherical because of

1. Viscosity
2. Air resistance
3. Surface tension forces
4. Atmospheric pressure

View answer

218. Ratio of inertia force to elastic force is known as

1. Mach number
2. Froude number
3. Reynolds number
4. Weber's number

View answer

219. Ratio of inertia force to surface Jension is known as

1. Mach number
2. Froude number
3. Reynolds's number
4. Weber's number

View answer

220. Re-entrant or Borda's mouthpiece is an

1. Internal
2. External
3. Both A and B
4. None of these

View answer