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71. |
In which case the work done per kg of air compressed from 1.05 ata, 15?C to 6.3 ata is minimum |
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Answer & Explanation Answer: Option B Explanation: |
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72. |
In which case the heat transferred from the air when compressed from 1.05 ata 15?C to 6.3 ata would be minimum? |
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Answer & Explanation Answer: Option A Explanation: |
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73. |
In which case the heat transferred from the air when compressed from 1 ata 15?C to 6 ata would be maximum |
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Answer & Explanation Answer: Option A Explanation: |
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74. |
The value of characteristic gas constant in kg metre per kg per deg C as |
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Answer & Explanation Answer: Option C Explanation: |
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75. |
The molecular volume of all the gases at 2 ata and 30?C is |
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Answer & Explanation Answer: Option D Explanation: |
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76. |
The value of characteristic gas constant for carbon dioxide would be |
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Answer & Explanation Answer: Option C Explanation: |
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77. |
If the two specific heats of a gas are 0.237 and 0.169 respectively, the volume of 3 kg of air at 27?C under a pressure of 3 ata would be |
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Answer & Explanation Answer: Option A Explanation: |
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78. |
The weight of 1 cu-m of carbon dioxide at NTP if the characteristic gas constant is 19.28 kg metre/kg/?C, would be |
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Answer & Explanation Answer: Option C Explanation: |
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79. |
1 cu-m of steam having dryness franction 0.85 at 12 ata mixes with 1.5 kg of water at 12?C at constant pressure. The dryness fraction of resulting steam would be |
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Answer & Explanation Answer: Option C Explanation: |
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80. |
A Carnot refrigerator extracts 100 kcal of heat per minute from a cold room which is maintained at – 15?C and it is discharged to atmosphere at 30?C. The horse power required to run the unit would be |
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Answer & Explanation Answer: Option B Explanation: |
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