Two black discs each of diameter 50 cm are placed parallel to each oth – McqOptions

MCQOPTIONS

1.	Two black discs each of diameter 50 cm are placed parallel to each other concentrically at a distance of one meter. The discs are maintained at 1000 K and 500 K. Calculate the heat flow between the discs when no other surface is present
A.	317.27 W
B.	417.27 W
C.	517.27 W
D.	617.27 W
Answer» C. 517.27 W

Discussion

No Comment Found

Related MCQs

Canned poultry is more often spoiled by
Sulfur stinker spoilage, caused by is uncommonly found in
Heat can travel only
A cold body contains no heat. The statement is
Heating always results in an increase in temperature. The statement isa) Correctb) Incorrectc) Always correctd) None of the mentioned 4-8. Q = UA(T2-T1); A formula for heat transfer is givenwhere: Q – Rate of Heat transfer U – Empirical constant (T2-T1) – Temperature difference between surrounding and system4. When Q < 0
Two state are given as followingI: Heat is a substanceII: Heat is proportional to temperature
In a single pass counter-flow heat exchanger, air enters at 700 K and leaves at 400 K. water enters at 300 K and leave at 600 K. Find the LMTD for the heat exchanger.
For what purpose annealing is done.
______ is not a type of heat exchanger flow.A. Cross flowB. Counter flowC. Parallel flowD. Consecutive flow
A double pipe (shell and tube) heat exchanger is constructed of a stainless steel inner tube of inner diameter is 1.5 cm (Di) and outer diameter is (1.9 cm) The thermal resistance of the heat exchanger/unit length as 0.0532°C/W. determine the overall heat transfer co-efficient for the inner and outer surface area of the tube respectively.