Engineering Thermodynamics The value of cp/cv for air is 2.3 1.45 1.4 1 2.3 1.45 1.4 1 ANSWER DOWNLOAD EXAMIANS APP
Engineering Thermodynamics Which of the following gas has a minimum molecular mass? Methane Hydrogen Oxygen Nitrogen Methane Hydrogen Oxygen Nitrogen ANSWER DOWNLOAD EXAMIANS APP
Engineering Thermodynamics For a perfect gas, according to Boyle’s law (where P = Absolute pressure, V = Volume and T = Absolute temperature) T/P = constant, if v is kept constant P v = constant, if T is kept constant P/T = constant, if v is kept constant V/T = constant, if p is kept constant T/P = constant, if v is kept constant P v = constant, if T is kept constant P/T = constant, if v is kept constant V/T = constant, if p is kept constant ANSWER DOWNLOAD EXAMIANS APP
Engineering Thermodynamics First law of thermodynamics Enables to determine change in internal energy of the system Provides relationship between heat, work and internal energy All of these Does not enable to determine change in entropy Enables to determine change in internal energy of the system Provides relationship between heat, work and internal energy All of these Does not enable to determine change in entropy ANSWER DOWNLOAD EXAMIANS APP
Engineering Thermodynamics The compression ratio for Diesel engines is 5 to 8 3 to 6 20 to 30 15 to 20 5 to 8 3 to 6 20 to 30 15 to 20 ANSWER DOWNLOAD EXAMIANS APP
Engineering Thermodynamics The efficiency of a gas turbine is given by (Net work output)/(Work-done by the turbine) (Actual temperature drop)/(Isentropic temperature drop) (Isentropic increase in temperature)/(Actual increase in temperature) (Net work output)/(Heat supplied) (Net work output)/(Work-done by the turbine) (Actual temperature drop)/(Isentropic temperature drop) (Isentropic increase in temperature)/(Actual increase in temperature) (Net work output)/(Heat supplied) ANSWER DOWNLOAD EXAMIANS APP
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