GATE ME 1998 | Convection Question 31 | Heat Transfer

GATE ME 1998

MCQ (Single Correct Answer)

-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

$$5-15, 20-200$$ and $$3000-50000$$ $$W/{m^2}K$$

$$20-50, 200-500,$$ and $$50000-100000$$ $$W/{m^2}K$$

$$50-100, 500-1000$$ and $$100000-1000000$$ $$W/{m^2}K$$

$$20-100, 200-1000$$ and a constant $$1000000$$ $$W/{m^2}K$$

GATE ME 1994

True or False

-0

For air near atmospheric condition flowing over a flat plate the laminar thermal boundary layer is thicker than hydrodynamic boundary layer

TRUE

FALSE

GATE ME 1990

MCQ (Single Correct Answer)

-0.3

In pool boiling the highest $$HTC$$ occurs in

Sub-cooled boiling zone

Nucleate boiling zone

Partial film boiling zone

Film boiling zone

GATE ME 1988

MCQ (Single Correct Answer)

-0.3

For the fluid flowing over a flat plate with Prandtle number greater than unity, the thermal boundary layer for laminar forced convection

is thinner than the hydrodynamic boundary layer

Has thickness equal to zero

is of same thickness as hydrodynamic boundary layer

is thicker than the hydrodynamic boundary layer

GATE ME Subjects

Browse all chapters by subject

Production Engineering

Metal Cutting Casting Sheet Metal Forming Processes Machining Welding Process Metal Forming Advance Machine Tools Metrology and Inspection

General Aptitude

Numerical Ability Logical Reasoning Verbal Ability

Fluid Mechanics

Fluid Dynamics Fluid Statics Boundary Layer Turbulent Flow Fluid Properties Laminar Flow Fluid Kinematics

Heat Transfer

Convection Radiation Heat Exchangers Conduction Fin Design and Transient Heat Conduction

Thermodynamics

Availability Properties of Pure Substances Calculation of Work and Heat Basic Concepts and Zeroth Law Entropy and Irreversibility Second Law of Thermodynamics First Law of Thermodynamics Rankine Cycle

Engineering Mechanics

Engineering Mechanics Static and Dynamics

Machine Design

Design of Bearings Design of Spur Gears Fatigue Strength Design For Static Loading Design of Brakes and Clutches Bolted Riveted and Welded Joints

Industrial Engineering

Production Planning and Control Queuing Line Balancing Forecasting Pert and Cpm Inventory Control Transportation Linear Programming Assignment Scheduling

Strength of Materials

Columns and Struts Strain Energy Method Thin Cylinders Complex Stresses Deflection of Beams Springs Simple Stress and Strain Pure Bending Stresses In Beams Moment of Inertia Torsion Shear Force and Bending Moment

Engineering Mathematics

Probability and Statistics Numerical Methods Linear Algebra Transform Theory Vector Calculus Calculus Differential Equations Complex Variable

Theory of Machines

Analysis of Plane Mechanisms Flywheel Gears and Gear Trains Vibrations

Turbo Machinery