Explore topic-wise MCQs in Mechanical Engineering Questions.

Viscosity of water in comparison to mercury is_________________?

Surface tension__________________?

The ratio of absolute viscosity to mass density is known as_________________?

The property of fluid by virtue of which it offers resistance to shear is called________________?

The density of water is 1000 kg/m3 at__________________?

For manometer, a better liquid combination is one having ___________________?

Alcohol is used in manometer, because____________________?

Units of surface tension are____________________?

The value of the coefficient of compressibility for water at ordinary pressure and temperature in kg/cm is equal to_________________?

The bulk modulus of elasticity___________________?

For very great pressures, viscosity of moss gases and liquids__________________?

A metal with specific gravity of o floating in a fluid of same specific gravity a will____________________?

Which of the following devices does not use Bernoulli's equation as its working principle?

The cylindrical portion of short length, which connects converging and diverging section of venturimeter, is called as

The specific weight of the fluid depends upon

Inter molecular cohesive force in the fluids is

The normal stress in a fluid will be constant in all directions at a point only if__________________________?

Shear stress in static fluid is

Which branch of fluid mechanics deals with translation, rotation and deformation of the fluid element without considering the force and energy causing such motion is called as

Which property of the fluid offers resistance to deformation under the action of shear force?

The component of acceleration due to change in the direction of velocity vector is called as

In which method of describing fluid motion, the observer remains stationary and observes changes in the fluid parameters at a particular point only?

The rate of increase of velocity with respect to change in the position of fluid particle in a flow field is called as

The fluid will rise in capillary when the capillary is placed in fluid, if

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

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

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

When the flow parameters at any given instant remain same at every point, then flow is said to be___________________?

If stream function (Ψ) satisfies the Laplace equation, it is a possible case of

Blood circulation through arteries is

Viscous forces are not present in

Which acceleration has a nonzero value in uniform flow?

The unit of physical quantity which does not depend on the unit of any other physical quantity is called as

When the angle between surface tension with the liquid (θ) is greater than 90o, the liquid becomes

Which of the following sentences are true for Bernoulli's equation? 1. Bernoulli's principle is applicable to ideal incompressible fluid 2. The gravity force and pressure forces are only considered in Bernoulli's principle 3. The flow of fluid is rotational for Bernoulli's principle 4. The heat transfer into or out of fluid should be zero to apply Bernoulli's principle

How is the intensity of shear stresses over the boundary layer?

Which of the following statements are true for dimensional analysis? 1. The functional relationship between dependent and non-dependent variables can be expressed into dimensionless terms by dimensional analysis 2. In model testing, it reduces the number of variables into three numbers 3. It is used to change the theoretical equation into dimensionless form 4. It helps to convert the units of quantities from one system to another system

The velocity gradients over the boundary layer are

Which of the following forces generally act on fluid while considering fluid dynamics? 1. Viscous force 2. Pressure force 3. Gravity force 4. Turbulent force 5. Compressibility force

Newton's law of viscosity states that

The friction factor in fluid flowing through pipe depends upon

Which of the following is not a primary quantity?

If viscosity of fluid is more, the thickness of boundary layer is

What is the effect of free stream velocity on thickness of boundary layer?

When the net force acting on a fluid is the sum of only gravity force, pressure force and viscous force, the equation is called as

The region in the turbulent boundary layer zone, adjacent to the solid surface of the plate is called as

The net force of an ideal flow is equal to the sum of nonzero values of

In a steady, ideal flow of an incompressible fluid, total energy at any point of the fluid is always constant. This theorem is known as

The flow of fluid will be laminar when,

How should be the viscosity of the flowing fluid for laminar flow?