Engineering :: Metallurgy
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| 91. |
Fusible plug for boilers consists of |
| A. |
Lead, tin and mercury |
B. |
Copper, lead and tin |
| C. |
Zinc, copper and lead |
D. |
Bismuth, lead and tin |
| E. |
Zinc, bismuth and tin |
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Answer: Option D
Explanation:
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| 92. |
Nichrome contains |
| A. |
Nickel, chromium and vanadium |
B. |
Nickel, copper and vanadium |
| C. |
Nickel and copper |
D. |
Nickel and chromium |
| E. |
Nickel, lead and zinc |
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Answer: Option D
Explanation:
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| 93. |
White metal contains |
| A. |
Lead and bismuth |
B. |
Mercury and zinc |
| C. |
Lead and zinc |
D. |
Lead and copper |
| E. |
Copper, zinc and mercury |
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Answer: Option A
Explanation:
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| 94. |
Major constituent of phosphor bronze is |
| A. |
Zinc |
B. |
Copper |
| C. |
Lead |
D. |
Aluminium |
| E. |
Phosphorous |
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Answer: Option B
Explanation:
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| 95. |
Invar is an alloy of |
| A. |
Iron and nickel |
B. |
Iron and copper |
| C. |
Iron and zinc |
D. |
Iron and chromium |
| E. |
Iron and vanadium |
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Answer: Option A
Explanation:
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| 96. |
Which of the following material is used for thermocouple junction? |
| A. |
Petwar |
B. |
White metal |
| C. |
Nichrome |
D. |
Magnanin |
| E. |
Invar |
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Answer: Option D
Explanation:
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| 97. |
Heating elements of electrical heaters are made of |
| A. |
Nichrome |
B. |
Nicheloy |
| C. |
Invar |
D. |
Tungsten |
| E. |
Phosphor bronze |
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Answer: Option A
Explanation:
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| 98. |
Standard electrical resistance are made of |
| A. |
Constantan |
B. |
Tungsten |
| C. |
Phosphor bronze |
D. |
Manganin |
| E. |
Invar |
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Answer: Option A
Explanation:
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| 99. |
Lowest melting point may be expected for |
| A. |
Aluminium |
B. |
Brass |
| C. |
Copper |
D. |
Lead |
| E. |
Zirconium |
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Answer: Option D
Explanation:
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| 100. |
Highest specific gravity is of |
Answer: Option C
Explanation:
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