Mechanical Engineering : Engineering Materials QUESTIONS AND ANSWERS :: part3 : 16 to 20
Following Mechanical Engineering Multiple choice objective type questions and answers will help you in BSNL JTO, GATE 2024 and IES 2024 examinations :
16.German silver is an alloy of |
| silver and some impurities |
| refined silver |
| nickel, copper and zinc |
| nickel and copper |
| silver and gold. |
17.Machining properties of steel are improved by adding |
| sulphur, lead, phosphorous |
| silicon, aluminium, titanium |
| vanadium, aluminium |
| chromium, nickel |
| lubricants. |
18.In which of the following cases, consideration of creep is important |
| flywheel of steam engine |
| cast iron pipes" |
| cycle chains |
| gas turbine blades |
| piston I.C. engine. |
19.Maximum percentage of carbon in austenite is |
| 0.025% |
| 0.26% |
| 0.8% |
| 1.25% |
| 1.7%. |
20.The basic constituents of Hastelloy are |
| aluminium, copper etc. |
| nickel, molybdenum etc. |
| nickel, copper, etc. |
| all of the above |
| none of the above. |
More Engineering Materials QUESTIONS AND ANSWERS available in next pages
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