- Home
- Category
- Mechanical Engineering Questions
- Engineering Materials Mcqs
- Engineering Materials Mcqs - Set 8
MCQs 1: Corrosion resistance of steel is increased by adding__________________?
MCQs 2: Alnico, an alloy used extensively for permanent magnets contains iron, nickel, aluminium and cobalt in the following ratio _____________________?
MCQs 3: Admiralty brass used for steam condenser tubes contains copper and zinc in the following ratio_________________?
MCQs 4: Ductile cast iron___________________?
contains 1.7 to 3.5% carbon in free state and is obtained by the slow cooling of molten cast iron
is also known as chilled cast iron and is obtained by cooling rapidly. It is almost unmachinable
is produced by annealing process. It is soft, tough and easily machined metal
is produced by small additions of magnesium (or creium) in the ladle. Graphite is in nodular or spheroidal form and is well dispersed throughout the m
none of the above
MCQs 5: Corrundum contains more than 95% _____________________?
MCQs 6: If a refractory contains high content of silicon, it means refractory is__________________?
MCQs 7: Which of the following is used for bearing liner_______________?
MCQs 8: Structural steel contains following principal alloying elements__________________?
nickel, chromium and manganese
tungsten, molybdenum and phosphorous
lead, tin, aluminium
zinc, sulphur, and chromium
none of the above
MCQs 9: Bronze contains_____________________?
70% copper and 30% zinc
90% copper and 10% tin
85-92% copper and rest tin with little lead and nickel
70-75% copper and rest tin
90% copper and 10% zinc
MCQs 10: Gun metal contains__________________?
70% copper and 30% zinc
90% copper and 10% tin
85-92% copper and rest tin with little lead and nickel
70-78% copper and rest tin
85-92% copper and rest zinc
MCQs 11: The alloy used for making electrical resistances and heating elements is____________________?
MCQs 12: Permalloy is a___________________?
kind of stainless steel
none ferrous alloy
polymer
cutting tool material
nickel and iron alloy having high permeability
MCQs 13: 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
MCQs 14: Admiralty gun metal contains__________________?
63 to 67% nickel and 30% copper
88% copper, 10% tin and rest zinc
alloy of tin, lead and cadmium
iron scrap and zinc
none of the above
MCQs 15: Which is false statement about properties of aluminium ___________________?
modulus of elasticity is fairly low
wear resistance is very good
fatigue strength is not high
creep strength limits its use to fairly low temperatures
corrosion resistance is good
MCQs 16: Addition of manganese to aluminium results in__________________?
improvement of casting characteristics
improvement of corrosion resistance
one of the best known age and precipitation-hardening systems
improving machinability
none of the above
MCQs 17: Which of the following alloys does not have copper as one of the constituents________________?
MCQs 18: Addition of silicon to aluminium results in____________________?
improvement of casting characteristics
improvement of corrosion resistance
one of the best known age and precipitation-hardening systems
improving machinability
none of the above
MCQs 19: 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
MCQs 20: Which of the following has highest specific strength of all structural materials__________________?
ABOUT US
Category
Who We Are