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Engineering Thermodynamics

Engineering Thermodynamics
A tri-atomic molecule consists of __________ atoms.

Four
Two
One
Three

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Engineering Thermodynamics
Which of the following is the property of a system?

All of these
Pressure and temperature
Volume and density
Enthalpy and entropy

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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
A diathermic wall is one which

Encourages thermal interaction
Permits thermal interaction
Prevents thermal interaction
Discourages thermal interaction

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Engineering Thermodynamics
In a no flow reversible process for which p = (-3V + 15) × 105 N/m², V changes from 1 m3 to 2 m3. The work done will be about

100 × 10⁵ joules
10 × 10⁵ kilo joules
1 × 10⁵ joules
10 × 10⁵ joules

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Engineering Thermodynamics
A perfect gas at 27°C is heated at constant pressure till its volume is double. The final temperature is

654°C
108°C
54°C
327°C

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