Thermal diffusivity of a substance is .
A) proportional of thermal conductivity
B) inversely proportional to k
C) proportional to (k)
D) inversely proportional to K2
E) none of the above.
Correct Answer:
Verified
Q10: Heat is transferred by all three modes
Q11: According to Prevost theory of heat exchange
A)it
Q12: The ratio of heat flow Q1/Q2 from
Q13: Heat transfer by radiation mainly depends upon
A)its
Q14: Thermal diffusivity is
A)a dimensionless parameter
B)function of temperature
C)used
Q16: Unit of thermal diffusivity is
A)m2/hr
B)m2/hr°C
C)kcal/m2 hr
D)kcal/m.hr°C
E)kcal/m2 hr°C.
Q17: Thermal conductivity of wood depends on
A)moisture
B)density
C)temperature
D)all of
Q18: In convection heat transfer from hot flue
Q19: Film coefficient is defined as Inside diameter
Q20: Heat conducted througfi unit area and unit
Unlock this Answer For Free Now!
View this answer and more for free by performing one of the following actions
Scan the QR code to install the App and get 2 free unlocks
Unlock quizzes for free by uploading documents