76) A boiler shell 200 cm diameter and plate thickness 1.5 cm is subjected to internal pressure of 1.5 MN/m , then the hoop stress will be

30 MN/m2

50 MN/m2

100 MN/m2

200 MN/m2

Answer is:

100 MN/m2

Engineering Materials MCQ with Answers

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77) A cylindrical section having no joint is known as

jointless section

homogeneous section

perfect section

seamless section.

Answer is:

seamless section.

78) Longitudinal stress in a thin cylinder is

equal to the hoop stress

twice the hoop stress

half of the hoop stress

one-fourth of hoop stress

Answer is:

half of the hoop stress

79) The safe twisting moment for a compound shaft is equal to the

maximum calculated value

minimum calculated value

mean value

extreme value

Answer is:

minimum calculated value

80) The torsional rigidity of a shaft is expressed by the

maximum torque it can transmit

number of cycles it undergoes before failure

elastic limit up to which it resists torsion, shear and bending stresses

torque required to produce a twist of one radian per unit length of shaft

Answer is:

torque required to produce a twist of one radian per unit length of shaft

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76) A boiler shell 200 cm diameter and plate thickness 1.5 cm is subjected to internal pressure of 1.5 MN/m , then the hoop stress will be

100 MN/m2

Engineering Materials MCQ with Answers

Related Engineering Materials MCQ with Answers

77) A cylindrical section having no joint is known as

seamless section.

78) Longitudinal stress in a thin cylinder is

half of the hoop stress

79) The safe twisting moment for a compound shaft is equal to the

minimum calculated value

80) The torsional rigidity of a shaft is expressed by the

torque required to produce a twist of one radian per unit length of shaft

Engineering Materials MCQ with Answers