Engineering :: Thermodynamics
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1. |
1 atmospheric pressure is equal to |
A. |
1 kg/cm2 |
B. |
1.033 kg/cm2 |
C. |
1.1 kg/cm2 |
D. |
1.133 kg/cm2 |
E. |
14.7 kg/cm2 |
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Answer: Option B
Explanation:
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2. |
The general gas equation is |
A. |
PV = RT |
B. |
PV = mRT |
C. |
PV = (RT)m |
D. |
PVn = constant |
E. |
PV = constant |
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Answer: Option B
Explanation:
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3. |
The slope of constant pressure line on temperature entropy diagrm is given by |
Answer: Option D
Explanation:
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4. |
For water, boiling and melting point will concide at |
A. |
0? K |
B. |
100? K |
C. |
200? K |
D. |
2730.16? K |
E. |
216.73? K |
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Answer: Option D
Explanation:
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5. |
On a Mollier chart the flow through turbine is represented by |
A. |
Horizontal line |
B. |
Vertical line |
C. |
Curved line convex up |
D. |
Carved line convex down |
E. |
None of the above |
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Answer: Option B
Explanation:
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6. |
In a steam turbine when steam expands, the entropy |
A. |
Increases linearly |
B. |
Decreases linearly |
C. |
Increases exponentially |
D. |
Decreases exponentially |
E. |
Does not change |
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Answer: Option E
Explanation:
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7. |
An isolated system |
A. |
Is a specified regon where transfers of energy and/or mass takes place |
B. |
Is a region of constant mass and only energy is allowed to cross the boundaries |
C. |
Cannot transfer either energy or mass to or from the surroundings |
D. |
Is one in which mass within the system is not necessarily constant |
E. |
None of the above |
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Answer: Option C
Explanation:
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8. |
The fact that the product of pressure and volume of a fixed amount of gas is of approximately constant value is known as |
A. |
Charle's law |
B. |
Gay Lussac's law |
C. |
Dalton's law |
D. |
Lewis law |
E. |
None of these |
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Answer: Option E
Explanation:
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9. |
The statement that energy can be neigher created nor destroyed but only converted from one form to another, is known as |
A. |
Kinetic theory of gases |
B. |
Avogadro's hypothesis |
C. |
Zerothlaw of thermodynamics |
D. |
First law of theormodynamics |
E. |
Second law of thermodynamics |
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Answer: Option D
Explanation:
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10. |
The sequence of processes that eventually returns the working substance to its original state is known as |
A. |
Event |
B. |
Process |
C. |
Thermodynamic property |
D. |
Thermodynamic cycle |
E. |
Zeroth law of thermodynamics |
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Answer: Option D
Explanation:
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