36. | Speisses is a mixture of the following: |
a. | Arsenides of heavy metals. |
b. | Antimonides of heavy metals. |
c. | Arsenides & antimonides of heavy metals. |
d. | Iron, cobalt and nickel. |
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Answer: (a).Arsenides of heavy metals.
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37. | Auto collimator is used to check |
a. | flatness |
b. | angle |
c. | rotor balancing |
d. | roughness |
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Answer: (b).angle
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38. | Area under the stress-strain curve upto the __________ is referred to as the modulus of resilience. |
a. | yield strength |
b. | elastic limit |
c. | proportional limit |
d. | maximum point |
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Answer: (c).proportional limit
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39. | __________ is the hardest oxide and is hence used where high wear resistance at high temperature is required. |
a. | Beryllia |
b. | Zirconia |
c. | Alumina |
d. | Magnesia |
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Answer: (c).Alumina
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40. | Titanium alloys are welded using the Following process: |
a. | TIG welding. |
b. | Submerged arc welding. |
c. | Butt welding. |
d. | Electron beam welding. |
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Answer: (a).TIG welding.
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