Engineering Thermodynamics Otto cycle consists of Two constant volume and two isothermal processes Two constant pressure and two isentropic processes Two constant volume and two isentropic processes One constant pressure, one constant volume and two isentropic processes Two constant volume and two isothermal processes Two constant pressure and two isentropic processes Two constant volume and two isentropic processes One constant pressure, one constant volume and two isentropic processes ANSWER DOWNLOAD EXAMIANS APP
Engineering Thermodynamics During throttling process Heat exchange does not take place There is no change of internal energy of steam No work is done by expanding steam All of these Heat exchange does not take place There is no change of internal energy of steam No work is done by expanding steam All of these ANSWER DOWNLOAD EXAMIANS APP
Engineering Thermodynamics An isolated system is one in which Both energy and mass cross the boundaries of the system Mass crosses the boundary but not the energy Neither mass nor energy crosses the boundaries of the system Mass does not cross boundaries of the system, though energy may do so Both energy and mass cross the boundaries of the system Mass crosses the boundary but not the energy Neither mass nor energy crosses the boundaries of the system Mass does not cross boundaries of the system, though energy may do so ANSWER DOWNLOAD EXAMIANS APP
Engineering Thermodynamics In order that a cycle be reversible, following must be satisfied When heat is being absorbed, temperature of hot source and working substance should be same Free expansion or friction resisted expansion/compression process should not be encountered All of these When beat is being rejected, temperature of cold source and working substance should be same When heat is being absorbed, temperature of hot source and working substance should be same Free expansion or friction resisted expansion/compression process should not be encountered All of these When beat is being rejected, temperature of cold source and working substance should be same ANSWER DOWNLOAD EXAMIANS APP
Engineering Thermodynamics One reversible heat engine operates between 1600 K and T2 K and another reversible heat engine operates between T2 K and 400 K. If both the engines have the same heat input and output, then temperature T2 is equal to 800 K 1400 K 1000 K 1200 K 800 K 1400 K 1000 K 1200 K ANSWER DOWNLOAD EXAMIANS APP
Engineering Thermodynamics The ratio of two specific heats of air is equal to 0.1 1.41 0.17 0.24 0.1 1.41 0.17 0.24 ANSWER DOWNLOAD EXAMIANS APP
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