Engineering Thermodynamics Otto cycle efficiency is higher than Diesel cycle efficiency for the same compression ratio and heat input because in Otto cycle Maximum temperature is higher Combustion is at constant volume Expansion and compression are isentropic Heat rejection is lower Maximum temperature is higher Combustion is at constant volume Expansion and compression are isentropic Heat rejection is lower ANSWER DOWNLOAD EXAMIANS APP
Engineering Thermodynamics A manufacturer claims to have a heat engine capable of developing 20 h.p. by receiving heat input of 400 kcal/mt and working between the temperature limits of 227° C and 27° C. His claim is Cost will be very high Not possible Theoretically possible May be possible with lot of sophistications Cost will be very high Not possible Theoretically possible May be possible with lot of sophistications ANSWER DOWNLOAD EXAMIANS APP
Engineering Thermodynamics Characteristic gas constant of a gas is equal to Cp + Cv Cp /Cv Cp - Cv Cv /Cp Cp + Cv Cp /Cv Cp - Cv Cv /Cp ANSWER DOWNLOAD EXAMIANS APP
Engineering Thermodynamics The compression ratio for petrol engines is 15 to 30 5 to 8 10 to 20 3 to 6 15 to 30 5 to 8 10 to 20 3 to 6 ANSWER DOWNLOAD EXAMIANS APP
Engineering Thermodynamics In closed cycle gas turbine, the air is compressed Isentropically None of these Polytropically Isothermally Isentropically None of these Polytropically Isothermally ANSWER DOWNLOAD EXAMIANS APP
Engineering Thermodynamics The expansion ratio (r) is the ratio of (where v1 = Volume at the beginning of expansion, and v2 = Volume at the end of expansion) (v1 + v2)/v1 v1/v2 (v1 + v2)/v2 v2/v1 (v1 + v2)/v1 v1/v2 (v1 + v2)/v2 v2/v1 ANSWER DOWNLOAD EXAMIANS APP
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