GATE PI 2012 | Radiation Question 1 | Heat Transfer

GATE PI 2012

MCQ (Single Correct Answer)

-0.3

For an opaque surface, the absorptivity $$\left( \alpha \right),$$ transmissivity $$\left( \tau \right)$$ and reflectivity $$\left( \rho \right)$$ are related by the equation:

$$\alpha + \rho = \tau $$

$$\rho + \alpha + \tau = 0$$

$$\alpha + \rho = 1$$

$$\alpha + \rho = 0$$

GATE PI Subjects

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Engineering Mechanics

Engineering Mechanics Static and Dynamics

Theory of Machines

Analysis of Plane Mechanisms Flywheel

Thermodynamics

Entropy and Irreversibility

Machine Tools and Machining

Advance Machine Tools Machining Metal Cutting

Metrology

Metrology and Inspection

Joining of Materials

Welding

Casting

Casting Process

Engineering Mathematics

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

Industrial Engineering

Inventory Control Line Balancing Queuing Forecasting Pert and Cpm

Fluid Mechanics

Fluid Statics Turbulent Flow Laminar Flow Fluid Kinematics Fluid Dynamics

Strength of Materials

Shear Force and Bending Moment Deflection of Beams Simple Stress and Strain Thin Cylinders Complex Stresses Pure Bending

Machine Design

Design For Static Loading Design of Spur Gears

Heat Transfer

Conduction Radiation Fin Design and Transient Heat Conduction Heat Exchangers

Metal Forming

Sheet Metal Forming Processes Metal Forming Process