Mechanical Engineering MCQs

A. Nickel, chromium and manganese
B. Tungsten, molybdenum and phosphorous
C. Lead, tin, aluminium
D. Zinc, sulphur, and chromium

A. Gun metal
B. Bronze
C. Bell metal
D. Babbit metal

A. Steel
B. A1203
C. Si02
D. Mgo

A. Acidic
B. Basic
C. Neutral
D. Brittle

A. 50 : 50
B. 30 : 70
C. 70 : 30
D. 40 : 60

A. Contains 1.7 to 3.5% carbon in free state and is obtained by the slow cooling of molten cast iron
B. Is also known as chilled cast iron and is obtained by cooling rapidly. it is almost unmachinable
C. Is produced by annealing process. it is soft, tough and easily machined metal
D. 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 material

A. 50 : 20 : 20 : 10
B. 40 : 30 : 20 : 10
C. 50 : 20 : 10 : 20
D. 30 : 20 : 30 : 20

A. Tin, lead and small percentage of antimony
B. Tin and lead
C. Tin, lead and silver
D. Tin and copper

A. Chromium and nickel
B. Nickel and molybdenum
C. Aluminium and zinc
D. Tungsten and sulfur

A. F.c.c.
B. c.c.
C. H.c.p.
D. Orthorhombic crystalline structure