Engineering Materials MCQ Questions & Answers | Mechanical Engineering Page-5 section-2

Section 1 Section 2 Section 3 Section 4

41.
The percentage of carbon in grey iron castings usually varies between

A. 0.5 to 1%

B. 1.2%

C. 2.5 to 4.5%

D. 5 to 7%

Answer & Solution Discuss in Board Save for Later

42.
Dye penetrant method is generally used to locate

A. Core defects

B. Surface defects

C. Superficial defects

D. Temporary defects

Answer & Solution Discuss in Board Save for Later

43.
The material widely used for making pendulums of clocks is

A. Stainless steel

B. High speed steel

C. Heat resisting steel

D. Nickel steel

Answer & Solution Discuss in Board Save for Later

44.
Taps dies and drills contain carbon

A. Below 0.5%

B. Below 1%

C. Above 1%

D. Above 2.2%

Answer & Solution Discuss in Board Save for Later

45.
Solder is an alloy consisting of

A. Tin, antimony, copper

B. Tin and copper

C. Tin and lead

D. Lead and zinc

Answer & Solution Discuss in Board Save for Later

46.
Malleable cast iron

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 cerium) in the ladle. Graphite is in the nodular or spheroidal form and is well dispersed throughout the material

Answer & Solution Discuss in Board Save for Later

47.
Bell metal contains

A. 70% copper and 30% zinc

B. 90% copper and 10% tin

C. 85 - 92% copper and rest tin with little lead and nickel

D. 70 - 75% copper and rest tin

Answer & Solution Discuss in Board Save for Later

48.
Which is false statement about normalizing?
Normalizing is done to

A. Refine grain structure

B. Reduce segregation in casting

C. Improve mechanical properties

D. Induce stresses

Answer & Solution Discuss in Board Save for Later

49.
Chilled cast iron has

A. No graphite

B. A very high percentage of graphite

C. A low percentage of graphite

D. Graphite as its basic constituent of composition

Answer & Solution Discuss in Board Save for Later

50.
The aluminium alloy, mainly used, for anodized utensil manufacture, is

A. Duralumin

B. Y-alloy

C. Magnalium

D. Hindalium

Answer & Solution Discuss in Board Save for Later

1 2 3 4 5 6 7 8 9 10

Engineering Materials MCQ Questions & Answers | Mechanical Engineering

41. The percentage of carbon in grey iron castings usually varies between

Answer & Solution

42. Dye penetrant method is generally used to locate

Answer & Solution

43. The material widely used for making pendulums of clocks is

Answer & Solution

44. Taps dies and drills contain carbon

Answer & Solution

45. Solder is an alloy consisting of

Answer & Solution

46. Malleable cast iron

Answer & Solution

47. Bell metal contains

Answer & Solution

48. Which is false statement about normalizing? Normalizing is done to

Answer & Solution

49. Chilled cast iron has

Answer & Solution

50. The aluminium alloy, mainly used, for anodized utensil manufacture, is

Answer & Solution

Read More Section(Engineering Materials)

41.
The percentage of carbon in grey iron castings usually varies between

42.
Dye penetrant method is generally used to locate

43.
The material widely used for making pendulums of clocks is

44.
Taps dies and drills contain carbon

45.
Solder is an alloy consisting of

46.
Malleable cast iron

47.
Bell metal contains

48.
Which is false statement about normalizing?
Normalizing is done to

49.
Chilled cast iron has

50.
The aluminium alloy, mainly used, for anodized utensil manufacture, is