1

GATE ME 2014 Set 4

MCQ (Single Correct Answer)

+1

-0.3

Match Group $$A$$ with Group $$B$$

**Group-A**

$$P:$$$$\,\,\,\,\,\,\,$$ Biot number

$$Q:$$$$\,\,\,\,\,\,\,$$ Grashof number

$$R:$$$$\,\,\,\,\,\,\,$$ Prandtl number

$$S:$$$$\,\,\,\,\,\,\,$$ Reynolds number

**Group-B**

$$1:$$$$\,\,\,\,\,\,\,$$ Ratio of buoyancy to viscous force

$$2:$$$$\,\,\,\,\,\,\,$$ Ratio of inertia force to viscous force

$$3:$$$$\,\,\,\,\,\,\,$$ Ratio of momentum to thermal diffusivities

$$4:$$$$\,\,\,\,\,\,\,$$ Ratio of internal thermal resistance to boundary layer thermal resistance

2

GATE ME 2009

MCQ (Single Correct Answer)

+1

-0.3

A coolant fluid at $${30^ \circ }C$$ flows over a heated flat plate maintained at a constant temperature of $${100^ \circ }C$$. The boundary layer temp distribution at a given location on the plate may be approximated as $$T=30+70exp(-y),$$ where $$y$$ (in $$m$$) is the distance normal to the plate and $$T$$ is in $$^ \circ C.$$ If thermal conductivity of the fluid is $$1.0W/mk,$$ the local convective heat transfer (in $$W/{m^2}K$$) at that location will be

3

GATE ME 2008

MCQ (Single Correct Answer)

+1

-0.3

For flow of fluid over a heated plate, the following fluid properties are known: Viscosity $$=0.001Pa.s;$$ Specific heat at constant pressure $$=1$$ $$kJ/kgK;$$ Thermal conductivity $$=$$ $$W/mK,$$ The hydrodynamic boundary layer thickness at a specified location on the plate is $$1mm,$$ thermal boundary layer thickness at the same location is

4

GATE ME 1998

MCQ (Single Correct Answer)

+1

-0.3

Heat transfer coefficients for free convection in gasses, forced convection in gases and vapors, and for boiling water lie, respectively, in the range of

Questions Asked from Convection (Marks 1)

Number in Brackets after Paper Indicates No. of Questions

GATE ME Subjects

Engineering Mechanics

Strength of Materials

Theory of Machines

Engineering Mathematics

Machine Design

Fluid Mechanics

Turbo Machinery

Heat Transfer

Thermodynamics

Production Engineering

Industrial Engineering

General Aptitude