Engineering Thermodynamics A gas is compressed in a cylinder by a movable piston to a volume one half its original volume. During the process 300 kJ heat left the gas and internal energy remained same. The work done on gas in Nm will be 300,000 Nm 300 Nm 30 Nm 3000 Nm 300,000 Nm 300 Nm 30 Nm 3000 Nm ANSWER DOWNLOAD EXAMIANS APP
Engineering Thermodynamics The efficiency of Diesel cycle with decrease in cut-off Decreases Increases First decreases and then increases First increases and then decreases Decreases Increases First decreases and then increases First increases and then decreases ANSWER DOWNLOAD EXAMIANS APP
Engineering Thermodynamics When gas is heated at constant pressure, the heat supplied is utilized in Increasing the internal energy of gas None of these Increasing the internal energy of gas and also for doing some external work Doing some external work Increasing the internal energy of gas None of these Increasing the internal energy of gas and also for doing some external work Doing some external work ANSWER DOWNLOAD EXAMIANS APP
Engineering Thermodynamics The compression ratio for Diesel engines is 5 to 8 3 to 6 15 to 20 20 to 30 5 to 8 3 to 6 15 to 20 20 to 30 ANSWER DOWNLOAD EXAMIANS APP
Engineering Thermodynamics The door of a running refrigerator inside a room was left open. Which of the following statements is correct? The room will be gradually warmed up The room will be cooled very slightly The room will be cooled to the temperature inside the refrigerator The temperature of the air in room will remain unaffected The room will be gradually warmed up The room will be cooled very slightly The room will be cooled to the temperature inside the refrigerator The temperature of the air in room will remain unaffected 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 May be possible with lot of sophistications Cost will be very high Theoretically possible Not possible May be possible with lot of sophistications Cost will be very high Theoretically possible Not possible ANSWER DOWNLOAD EXAMIANS APP
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