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Engineering Thermodynamics

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

12
16
14
32

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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

Not possible
Theoretically possible
May be possible with lot of sophistications
Cost will be very high

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Engineering Thermodynamics
The general gas energy equation is (where Q1 - 2 = Heat supplied, dU = Change in internal energy, and W1 - 2 = Work done in heat units)

Q1 - 2 = dU × W1 - 2
Q1 - 2 = dU + W1 - 2
Q1 - 2 = dU - W1 - 2
Q1 - 2 = dU/W1 - 2

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Engineering Thermodynamics
The process is adiabatic, if the value of n in the equation pvn = C, is

∝
One
Zero
γ

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Engineering Thermodynamics
The heat and work are mutually convertible. This statement is called ___ law of thermodynamics.

Zeroth
Second
Third
First

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Engineering Thermodynamics
When a gas is heated, change takes place in

All of the listed here
Temperature
Volume
Pressure

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