Mechanical Engineering : Engineering Materials QUESTIONS AND ANSWERS :: part8 : 6 to 10
Following Mechanical Engineering Multiple choice objective type questions and answers will help you in BSNL JTO, GATE 2024 and IES 2024 examinations :
6.Pearlite is a combination of |
| ferrite and cementite |
| cementite and gamma iron |
| ferrite and austenite |
| ferrite and iron graphite |
| pearlite and ferrite. |
7.The transistor is made of |
| silver |
| gold |
| copper |
| germanium |
| german silver. |
8.Acidic solution is one which has pH value |
| greater than 7 |
| less than 7 |
| equal to 7 |
| pH value has nothing to do with neutral solution |
| none of the above. |
9.The correct composition of Babbit metal is |
| 87.75% Sn, 4% Cu, 8% Sb, 0.25% Bi |
| 90% Sn, 2% Cu, 4% Sb, 2% Bi, 2% Mg |
| 87% Sn, 4% Cu, 8% Sb, 1% Al |
| 82% Sn, 4% Cu, 8% Sb, 3% Al, 3% Mg |
| none of the above. |
10.Austenite rs a combination of |
| ferrite and cementite |
| cementite and gamma iron |
| ferrite and austenite |
| ferrite and iron graphite |
| pearlite and ferrite. |
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