Heat Transfer - Study Mode

[#126] Conduction occurs in the buffer zone for a fluid flowing through a heated pipe, only when Prandtl number is
Correct Answer

(A) 0.1

[#127] Conductance is given by (where, x = thickness, A = heat flow area, K = thermal conductivity.)
Correct Answer

(B) $$frac{{{ ext{KA}}}}{{ ext{x}}}$$

[#128] Baffles are provided in heat exchangers to increase the
Correct Answer

(C) Heat transfer co-efficient

[#129] What is the geometric mean of two heat transfer areas A 1 and A 2 ?
Correct Answer

(A) $$sqrt {{{ ext{A}}_1} cdot {{ ext{A}}_2}} $$

[#130] Grashhoff number is given by
Correct Answer

(A) gD 3 .β.Δtρ 2 /μ 2