| 6. | Internal energy of a gas obeying Vanderwall's equation of state given below, depends upon its
 |
| a. | pressure & temperature. |
| b. | pressure & specific volume. |
| c. | temperature & specific volume. |
| d. | temperature only. |
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Answer: (a).pressure & temperature.
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| 7. | Which of the following represents the correct time-temperature curve when a block of metal is heated above room temperature & then left to cool in the room following Newton's law of cooling in which the rate of temperature drop will go on decreasing with the passage of time.
 |
| a. | A |
| b. | B |
| c. | C |
| d. | D |
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Answer: (c).C
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| 8. | In extrusion of metals, which of the following statement is true ? |
| a. | speed of the extruded material is same as that of ram speed. |
| b. | Redundant work is a function of the die angle. |
| c. | Relative motion between the billet surface and the container wall is always present. |
| d. | Hollow ram is used for indirect extrusion. |
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Answer: (d).Hollow ram is used for indirect extrusion.
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| 9. | Nuclear fission of one atom of uranium-235 produces the energy equivalent to about __________ MeV. |
| a. | 20 |
| b. | 200 |
| c. | 500 |
| d. | 1000 |
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Answer: (b).200
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| 10. | Which of the following parameters is not responsible for the heat loss from a hot steam carrying bare pipe surface located in a room without fans ? |
| a. | Emissivity of pipe surface. |
| b. | Diameter & length of the pipe. |
| c. | Temperature of hot pipe surface & that of air in the room. |
| d. | none of these. |
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Answer: (d).none of these.
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