Mechanical Engineering Questions And Answers :: Engineering Materials: part7

Mechanical Engineering : Engineering Materials QUESTIONS AND ANSWERS :: part7 : 1 to 5

Following Mechanical Engineering Multiple choice objective type questions and answers will help you in BSNL JTO, GATE 2021 and IES 2021 examinations :

1.Free cutting steels

are used where ease in machining is the criterion
contain carbon in free form
require least cutting force
do not exist
can be cut freely even under adverse conditions.

2.White metal contains

63 to 67% nickel and 30% copper
88% copper and 10% tin and rest zinc
alloy of tin, lead and cadmium
silver and chromium
malleable cast iron and silver.

3.Which of the following alloys does not have copper as one of the constituents

delta metal
monel metal
silicon bronze.

4.Addition of manganese to aluminium results in

improvement of casting charac�teristics
improvement of corrosion resistance
one of the best known age and precipitation-hardening systems
improving machinability
none of the above.

5.Which of the following alloys does not contain tin

white metal
solder admiralty
fusible metal
phosphor bronze
gun metal.

More Engineering Materials QUESTIONS AND ANSWERS available in next pages

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