Heat Transfer The critical radius of insulation for cylindrical pipe is (where, hi = heat transfer coefficient at inside of the pipe ) 2hi/K hi/K 2K/h0 K/h0 2hi/K hi/K 2K/h0 K/h0 ANSWER DOWNLOAD EXAMIANS APP
Heat Transfer Multiple effect evaporation accounts for None of these Steam economy Investment economy Lower operating costs None of these Steam economy Investment economy Lower operating costs ANSWER DOWNLOAD EXAMIANS APP
Heat Transfer For flow over a flat plate, the ratio of thermal boundary layer thickness, 'xt' and hydrodynamic boundary layer thickness 'x' is equal to (where, NPr = Prandtl number) NPr1/3 NPr-1 NPr-1/3 NPr NPr1/3 NPr-1 NPr-1/3 NPr ANSWER DOWNLOAD EXAMIANS APP
Heat Transfer Which of the following is not used as a medium for high temperature heating ? liquid metal None of the listed here mercury dowtherm liquid metal None of the listed here mercury dowtherm ANSWER DOWNLOAD EXAMIANS APP
Heat Transfer In a boiling curve, the peak heat flux is called the __________ point. Boiling Burnout Nusselt Leidenfrost Boiling Burnout Nusselt Leidenfrost ANSWER DOWNLOAD EXAMIANS APP
Heat Transfer The thermal efficiency of a reversible heat engine operating between two given thermal reservoirs is 0.4. The device is used either as a refrigerator or as a heat pump between the same reservoirs. Then the coefficient of performance as a refrigerator (COP)R and the co-efficient of performance as a heat pump (COP)HP are (COP)R = 1.5; (COP)HP = 2.5 (COP)R = 2.5; (COP)HP = 1.5 (COP)R = (COP)HP = 2.5 (COP)R = (COP)HP = 0.6 (COP)R = 1.5; (COP)HP = 2.5 (COP)R = 2.5; (COP)HP = 1.5 (COP)R = (COP)HP = 2.5 (COP)R = (COP)HP = 0.6 ANSWER DOWNLOAD EXAMIANS APP
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