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 + v2)/v1 (v1 + v2)/v2 v2/v1 v1/v2 (v1 + v2)/v1 (v1 + v2)/v2 v2/v1 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 cooled very slightly The room will be gradually warmed up 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 cooled very slightly The room will be gradually warmed up 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 In order that a cycle be reversible, following must be satisfied Free expansion or friction resisted expansion/compression process should not be encountered When beat is being rejected, temperature of cold source and working substance should be same All of these 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 When beat is being rejected, temperature of cold source and working substance should be same All of these When heat is being absorbed, temperature of hot source and working substance should be same ANSWER DOWNLOAD EXAMIANS APP
Engineering Thermodynamics Which of the following gas has the highest calorific value? Mond gas Blast furnace gas Coal gas Producer gas Mond gas Blast furnace gas Coal gas Producer gas ANSWER DOWNLOAD EXAMIANS APP
Engineering Thermodynamics Kerosene is distilled at 65° to 220°C 345° to 470°C 220° to 345°C 470° to 550°C 65° to 220°C 345° to 470°C 220° to 345°C 470° to 550°C ANSWER DOWNLOAD EXAMIANS APP
Engineering Thermodynamics For which of the following substances, the gas laws can be used with minimum error Superheated steam Dry steam Saturated steam Wet steam Superheated steam Dry steam Saturated steam Wet steam ANSWER DOWNLOAD EXAMIANS APP
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