Controlling heat transfer film co-efficient is the one, which offers ______________ resistance to heat transfer?

Related Mcqs:

What is the logarithmic mean of r1 and r2 ?

A. (r1 – r2)/ln(r1/r2) B. (r1 – r2)/ln(r2/r1) C. (r2 – r1)/ln(r1/r2) D. (r1 – r2)/-ln(r1/r2)...

The critical radius of insulation for cylindrical pipe is (where, hi = heat transfer coefficient at inside of the pipe) ?

A. K/h0 B. 2K/h0 C. hi/K D. 2hi/K...

The Nusselt number for fully developed (both thermally and hydrodynamically) laminar flow through a circular pipe whose surface temperature remains constant is______________?

A. 1.66 B. 88.66 C. 3.66 D. Dependent on NRe only...

If average heat transfer co-efficient is ha and the local coefficient at the end of the plate is hl then in case of heat transfer to a fluid flowing over a flat plate, heated over its entire length________________?

A. ha = hl B. ha = 2hl C. ha = 0.5 hl D. ha = 0.75 hl...

For gases, the thermal conductivity increases with temperature rise. For liquids, with increase in concentration, its thermal conductivity generally ?

A. Decreases B. Increases C. Remains unchanged D. Increases exponentially...