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HMT - Mechanical engineering

HMT - Mechanical engineering
Question:-
Option (A)
Option (B)
Option (C)
Option (D)

where Ai, Fij and ∈i are area, shape factor and emissivities

respectively.
Correct Option:
A
Question:-
Option (A)
the final value of be measured
Option (B)
50% of the vallue of initial temperature difference
Option (C)
63.2% of the value of the initial temperature difference
Option (D)
98.8% of the value of the initial temperate difference
Correct Option:
C
Question:-
Option (A)
Reynold number and Nusselt number
Option (B)
Reynold number and Prandtl number
Option (C)
Nusslet number and Prandtl number
Option (D)
Reynold number and Grashoff number
Correct Option:
B
Question:-
Option (A)
Option (B)
Option (C)
Option (D)
Correct Option:
D
Question Solution:
The expression for temperature profile is given as
Question:-
Option (A)
Option (B)
Option (C)
Option (D)

where k is the thermal conductivity of the sphere.
Correct Option:
A