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Engineering Thermodynamics

Engineering Thermodynamics
Kerosene is distilled at

470° to 550°C
345° to 470°C
65° to 220°C
220° to 345°C

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Engineering Thermodynamics
A path 1-2-3 is given. A system absorbs 100 kJ as heat and does 60 kJ of work while along the path 1-4-3, it does 20 kJ of work. The heat absorbed during the cycle 1-4-3 is

-80 kJ
-140 kJ
+60 kJ
-40 kJ

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Engineering Thermodynamics
One kg of ethylene (C2H4) requires 2 kg of oxygen and produces 22/7 kg of carbon dioxide and ___ kg of water or steam.

11/4
11/7
9/7
7/4

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Engineering Thermodynamics
The atomic mass of oxygen is

14
18
121
16

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Engineering Thermodynamics
The efficiency of Carnot cycle depends upon

Pressure ratio
Temperature limits
Cut-off ratio and compression ratio
Volume compression ratio

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Engineering Thermodynamics
The efficiency of the Carnot cycle is (where T1 and T2 = Highest and lowest temperature during the cycle)

1 - (T2/T1)
(T1/T2) - 1
1 + (T2/T1)
1 - (T1/T2)

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