Questions 41–50 of 133. Imported answers require independent review unless marked reviewed.

Topic practice 133 questionsPage 5 of 14

Question 70

Open question
XE-DMCQ1 markNeeds review
A thin walled, closed cylindrical vessel of inside diameter

and wall thickness

contains a fluid under pressure

. The figure below shows a part of the cylindrical vessel; end caps are not shown. Consider the small element shown with sides parallel and perpendicular to the axis of the cylinder. The stresses

and

are
Diagram for Engineering Sciences question 70

Your answerChoose one option.

Log in to check the answer

You can attempt this question now. Sign in to view the answer key, explanations and discussion.Log in to check answer

Question 73

Open question
XE-DNAT1 markNeeds review
A simply supported beam of length 3 m is loaded as shown in the figure.
Diagram for Engineering Sciences question 73

The magnitude of the shear force (in kN) at the mid-point of the beam is______(rounded off to one decimal place).

Log in to check the answer

You can attempt this question now. Sign in to view the answer key, explanations and discussion.Log in to check answer

Question 74

Open question
XE-DNAT1 markNeeds review
For a plane stress problem, the principal stresses are 100 MPa and 50 MPa. The magnitude of maximum shear stress (in MPa) in the material is______(rounded off to one decimal place).

Log in to check the answer

You can attempt this question now. Sign in to view the answer key, explanations and discussion.Log in to check answer

Question 76

Open question
XE-DMCQ2 marksNeeds review
A cylinder made of rubber (length = L and diameter = d) is inserted in a rigid container as shown in the figure. The rubber cylinder fits snugly in the rigid container. There is no wall friction. The modulus of elasticity of the rubber is E and its Poisson’s ratio is

. The cylinder is subjected to a small uniform pressure

as shown in the figure. The resulting axial strain (

) is
Diagram for Engineering Sciences question 76

Your answerChoose one option.

Log in to check the answer

You can attempt this question now. Sign in to view the answer key, explanations and discussion.Log in to check answer

Question 77

Open question
XE-DMCQ2 marksNeeds review
The state of stress at the critical location in a structure is

,

,

. The yield stress for the material in uniaxial tension is 400 MPa. Select the correct statement among the following.
Your answerChoose one option.

Log in to check the answer

You can attempt this question now. Sign in to view the answer key, explanations and discussion.Log in to check answer

Question 78

Open question
XE-DMCQ2 marksNeeds review
The figure shows a column of rectangular cross section 100 mm × 80 mm. It carries a load of 60 kN at a point 30 mm from the edge P Q. The values of stress component

on surfaces

and

, at points far away from both ends of the column, are respectively
Diagram for Engineering Sciences question 78

Your answerChoose one option.

Log in to check the answer

You can attempt this question now. Sign in to view the answer key, explanations and discussion.Log in to check answer

Question 79

Open question
XE-DMCQ2 marksNeeds review
Consider an electric pole with dimensions as shown in the figure. Let the end R be subjected to a vertical force F. The flexural rigidity of both vertical and horizontal bars is EI. Neglect the axial deflection of the vertical bar, and all effects of self-weight. The vertical deflection at end R is
Diagram for Engineering Sciences question 79

Your answerChoose one option.

Log in to check the answer

You can attempt this question now. Sign in to view the answer key, explanations and discussion.Log in to check answer

Question 80

Open question
XE-DMSQ2 marksNeeds review
A uniform cantilever beam has flexural rigidity EI and length L. It is subjected to a concentrated force F and moment M = 2FL at the free end as shown. The deflection (δ) at the free end is
Diagram for Engineering Sciences question 80

Your answerSelect all correct options. You can choose more than one.

Log in to check the answer

You can attempt this question now. Sign in to view the answer key, explanations and discussion.Log in to check answer

Question 84

Open question
XE-DNAT2 marksNeeds review
A thin steel plate is loaded in the x-y plane as shown in the figure. Take the Poisson’s ratio of steel to be 0.3 and the modulus of elasticity of steel to be 200 GPa. The strain along the z-direction is

. The value of

(in MPa) is_____(rounded off to one decimal place).
Diagram for Engineering Sciences question 84


Log in to check the answer

You can attempt this question now. Sign in to view the answer key, explanations and discussion.Log in to check answer

Question 85

Open question
XE-DNAT2 marksNeeds review
A composite rod made of steel and copper is fixed immovably at its ends as shown in the figure. The length of each portion of the rod is 1 m as shown. The cross-section of both portions are the same. The modulus of elasticity of steel and copper are 200 GPa and 100 GPa, respectively. The coefficients of thermal expansion of steel and copper are 12 × 10

/°C and 18 × 10

/°C, respectively. The composite rod is initially stress free. Then, the temperature of the composite rod is increased by 100 °C. The magnitude of axial stress (in MPa) developed in the steel rod is_____(rounded off to one decimal place).
Diagram for Engineering Sciences question 85


Log in to check the answer

You can attempt this question now. Sign in to view the answer key, explanations and discussion.Log in to check answer