Heat Transfer In regenerative air preheater (as practised in heating of coke ovens), the heat is transferred By direct contact of hot flue gas with air Through a metallic wall None of these By heating an intermediate material (like chequor bricks) and then heating the air from this hot material By direct contact of hot flue gas with air Through a metallic wall None of these By heating an intermediate material (like chequor bricks) and then heating the air from this hot material ANSWER DOWNLOAD EXAMIANS APP
Heat Transfer Baffles are provided in heat exchangers to increase the Heat transfer area Heat transfer rate Heat transfer co-efficient Fouling factor Heat transfer area Heat transfer rate Heat transfer co-efficient Fouling factor ANSWER DOWNLOAD EXAMIANS APP
Heat Transfer The overall resistance for heat transfer through a series of flat resistance, is the __________ of the resistances. Product Geometric mean Average Sum Product Geometric mean Average Sum ANSWER DOWNLOAD EXAMIANS APP
Heat Transfer Evaporator tubes are generally Horizontal Vertical Inclined Random Horizontal Vertical Inclined Random ANSWER DOWNLOAD EXAMIANS APP
Heat Transfer LMTD correction factor which is to be applied for a cross-flow heat exchanger increases with increase in the number of shell passes. Its value for a single pass cross flow heat exchanger is Zero <1 >1 1 Zero <1 >1 1 ANSWER DOWNLOAD EXAMIANS APP
Heat Transfer For small temperature difference, the heat transfer rate as per Newton's law of cooling is proportional to (where, Δt = excess temperature) Δt √Δt Δt² Δt³ Δt √Δt Δt² Δt³ ANSWER DOWNLOAD EXAMIANS APP
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