Question 1

The emissive power of a body depends upon its

Accepted Answer

A) temperature 
B) wave length 
C) physical nature 
D) all of the above 
E) none of the above. 
A) temperature 
B) wave length 
C) physical nature 
D) all of the above 
E) none of the above.

Question 2

Three materials A, B and C of equal thickness and of thermal conductivity of 20, 40 & 60 kcal/hr. m. °C respectively are joined together. The temperature outside of A and C are 30°C and 100°C respectively. The interface between B and C will be at a temperature of __________ °C.

Accepted Answer

A) 40 
B) 95 
C) 70 
D) 50 
A) 40 
B) 95 
C) 70 
D) 50

Question 3

A perfect black body is one which

Accepted Answer

A) is black in colour 
B) reflects all heat 
C) transmits all heat radiations 
D) abslprbs heat radiations of all wave lengths falling on it 
E) fully opaque. 
A) is black in colour 
B) reflects all heat 
C) transmits all heat radiations 
D) abslprbs heat radiations of all wave lengths falling on it 
E) fully opaque.

Question 4

A graph between __________ is called Wilson plot.

Accepted Answer

A) (1/U) Vs. (1/v 0.8) 
B) (1/v 0.8) Vs. U 
C) v 0.8 Vs . U 
D) (1/U) Vs. (1/V) 
A) (1/U) Vs. (1/v 0.8) 
B) (1/v 0.8) Vs. U 
C) v 0.8 Vs . U 
D) (1/U) Vs. (1/V)

The emissive power of a body depends upon its

Three materials A, B and C of equal thickness and of thermal conductivity of 20, 40 & 60 kcal/hr. m. °C respectively are joined together. The temperature outside of A and C are 30°C and 100°C respectively. The interface between B and C will be at a temperature of __________ °C.

A perfect black body is one which

A graph between __________ is called Wilson plot.

Thermal Conductivity and Heat Transfer

Heat Transfer and Thermal Conductivity: Part A

Heat Transfer and Thermal Conductivity: Part B

Heat Transfer and Thermal Conductivity: Part C

Heat Transfer and Evaporator

Heat Transfer and Heat Exchangers: Part A

Heat Transfer and Heat Exchangers: Part B

Heat Transfer and Crystallisation

Heat Transfer and Thermal Properties: Part A

Heat Transfer and Thermal Properties: Part B

Heat Exchangers and Condensation

Thermal Properties and Processes

Concepts in Heat Transfer

Components of Radiation From Flames

Heat Transfer and Thermodynamics

Heat Transfer Processes, Thermometers, and Evaporators

Heat Transfer and Thermal Properties: Part A

Heat Transfer and Evaporation

Understanding the Dominant Mechanism of Heat Transfer

Heat Transfer and Fluid Mechanics

Heat Transfer and Boiling Point Elevation in Solutions

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Exam 18: Heat Transfer Mechanisms in a Spaced Plate System

The emissive power of a body depends upon its

Three materials A, B and C of equal thickness and of thermal conductivity of 20, 40 & 60 kcal/hr. m. °C respectively are joined together. The temperature outside of A and C are 30°C and 100°C respectively. The interface between B and C will be at a temperature of __________ °C.

A perfect black body is one which

A graph between __________ is called Wilson plot.

Thermal Conductivity and Heat Transfer

Heat Transfer and Thermal Conductivity: Part A

Heat Transfer and Thermal Conductivity: Part B

Heat Transfer and Thermal Conductivity: Part C

Heat Transfer and Evaporator

Heat Transfer and Heat Exchangers: Part A

Heat Transfer and Heat Exchangers: Part B

Heat Transfer and Crystallisation

Heat Transfer and Thermal Properties: Part A

Heat Transfer and Thermal Properties: Part B

Heat Exchangers and Condensation

Thermal Properties and Processes

Concepts in Heat Transfer

Components of Radiation From Flames

Heat Transfer and Thermodynamics

Heat Transfer Processes, Thermometers, and Evaporators

Heat Transfer and Thermal Properties: Part A

Heat Transfer and Evaporation

Understanding the Dominant Mechanism of Heat Transfer

Heat Transfer and Fluid Mechanics

Heat Transfer and Boiling Point Elevation in Solutions

Filters