Reynold's number is the ratio of inertia force to

Euler number is defined as the ratio of inertia force to __________ force.

A

Pressure

B

Elastic

C

Gravity

D

Viscous

The ratio of the moment of inertia of a rectangle about its centroidal axis to the moment of inertia about its base, is

A

$$\frac{1}{4}$$

B

$$\frac{1}{2}$$

C

$$\frac{3}{4}$$

D

$$2$$

Ratio of inertia force to elastic force is known as

A

Mach number

B

Froude number

C

Reynolds number

D

Weber's number

The ratio of the inertia force to the elastic force is called

A

Reynold's number

B

Froude's number

C

Weber's number

D

Mach number

The ratio of the inertia force to the viscous force is called

A

Reynold's number

B

Froude's number

C

Weber's number

D

Euler's number

Mass moment of inertia of a thin rod about its one end is ___________ the mass moment of inertia of the same rod about its mid-point

A

Same as

B

Twice

C

Thrice

D

Four times

In order to have a connecting rod equally strong in buckling about X-axis and Y-axis, the moment of inertia about X-axis should be __________ the moment of inertia about Y-axis.

A

Equal to

B

Twice

C

Three times

D

Four times

In the low Reynolds number region, the drag force on a sphere is proportional to

A

V

B

V²

C

V⁴

D

V^0.5

When the ratio of the Grashoff number and to the square of Reynolds number is one, the dominant mechanism of heat transfer is

A

Free convection

B

Entry length problem in laminar forced conduction (developing thermal boundary layer)

C

Mixed convection (both free and forced)

D

Forced convection

Froude's number is the ratio of inertia force to

A

Pressure force

B

Elastic force

C

Gravity force

D

Surface tension force

Reynold's number is the ratio of inertia force to

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