Question: The specific weight of water is 1000 kg/m”_________________?

• 1. at normal pressure of 760 mm
• 2. at 4°C temperature
• 3. at mean sea level
• 4. all the above

Question: The property of a fluid which enables it to resist tensile stress is known as___________________?

• 1. compressibility
• 2. surface tension
• 3. cohesion
• 4. adhesion

Question: Property of a fluid by which its own molecules are attracted is called___________________?

• 1. adhesion
• 2. cohesion
• 3. viscosity
• 4. compressibility

Question: If no resistance is encountered by displacement, such a substance is known as ___________________?

• 1. fluid
• 2. water
• 3. gas
• 4. ideal fluid

Question: Practical fluids___________________?

• 1. are viscous
• 2. possess surface tension
• 3. are compressible
• 4. possess all the above properties

Question: Fluid is a substance that___________________?

• 1. cannot be subjected to shear forces
• 2. always expands until it fills any container
• 3. has the same shear stress.at a point regardless of its motion
• 4. cannot remain at rest under action of any shear force

Question: Select the correct statement?

• 1. Local atmospheric pressure depends upon elevation of locality only
• 2. Standard atmospheric pressure is the mean local atmospheric pressure a* sea level
• 3. Local atmospheric pressure is always below standard atmospheric pressure
• 4. A barometer reads the difference be-tween local and standard atmospheric pressure

Question: Choose the correct relationship ?

• 1. specific gravity = gravity x density
• 2. dynamicviscosity = kinematicviscosity x density
• 3. gravity = specific gravity x density
• 4. kinematicviscosity = dynamicviscosity x density

Question: Choose the wrong statement?

• 1. Viscosity of a fluid is that property which determines the amount of its resistance to a shearing force
• 2. Viscosity is due primarily to interaction between fluid molecules
• 3. Viscosity of liquids decreases with in-crease in temperature
• 4. Viscosity of liquids is appreciably affected by change in pressure

Question: Choose the wrong statement ?

• 1. The center of buoyancy is located at the center of gravity of the displaced liquid
• 2. For stability of a submerged body, the center of gravity of body must lie directly below the center of buoyancy
• 3. If e.g. and center of buoyancy coincide, the submerged body must lie at neutral equilibrium for all positions
• 4. All floating bodies are stable