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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