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Mechanical Engineering · all questions

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

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1 kgf/cm2 is equal to

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Work done is zero for the following process

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The fuel mostly used in blast furnace for extracting pig iron from iron ores is

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On weight basis, air contains following parts of oxygen

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On volume basis, air contains following parts of oxygen

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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

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Gases have

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According to Dalton's law, the total pressure of the mixture of gases is equal to

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When a gas is heated, change takes place in

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A sudden fall in the barometer reading is a sign of approaching

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If heat be exchanged in a reversible manner, which of the following property of the working substance will change accordingly

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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

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One molecule of oxygen is __________ times heavier than the hydrogen atom.

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The oxygen atom is ________ times heavier than the hydrogen atom.

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Heat and work are

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During throttling process

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Universal gas constant is defined as equal to product of the molecular weight of the gas and

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The index of compression ‘n’ tends to reach ratio of specific heats ‘y’ when

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The fuel mostly used in cement industry and in metallurgical processes is

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