Questions 1491–1500 of 1772. Imported answers require independent review unless marked reviewed.

Topic practice 1772 questionsPage 150 of 178

Question 4

Open question
XE-DMCQ1 markNeeds review
At a point in a stressed body, sum of the normal stresses acting on perpendicular faces of an arbitrarily oriented plane stress element is always
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 5

Open question
XE-DMCQ1 markNeeds review
The principal stresses on a plane stress element are shown in the figure. The maximum shear stress (in MPa) is
Diagram for Engineering Sciences question 5

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 6

Open question
XE-DNAT1 markNeeds review
A rigid and thin L-shaped bracket is fixed to the wall at point

, and a force

is applied at point

as shown. For a given force

, the point

experiences the maximum clockwise moment when the inclination

(in degrees) with the

-axis is .......... [up to two decimal places]
Diagram for Engineering Sciences question 6


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 7

Open question
XE-DNAT1 markNeeds review
A cantilever beam with length,

m, modulus of elasticity,

GPa, and area moment of inertia,

carries a concentrated mass

kg at its free-end. By idealizing it as a single degree-of-freedom system and neglecting the mass of the cantilever beam, the natural frequency (in rad/s) of small transverse oscillations of the mass is ....... [up to two decimal places]

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 8

Open question
XE-DNAT1 markNeeds review
For a typical grade of steel, the value of modulus of elasticity (

) and Poisson’s ratio (

) are 208 GPa and 0.3 respectively. The value of shear modulus (

) of the steel (in GPa) is .......

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 9

Open question
XE-DNAT1 markNeeds review
A tensile test is performed on a metallic specimen of diameter 8 mm and gauge length 50 mm. When the tensile load

reaches a value of 20 kN, the distance between the gauge marks increases by 0.09 mm. If the sample remains within the elastic limit, the modulus of elasticity (in GPa) of the test metal is..........[up to two decimal places]
Diagram for Engineering Sciences question 9


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 10

Open question
XE-DMCQ2 marksNeeds review
A beam

is subjected to load

at its free end

as shown in the figure. The flexural rigidity of the beam is

. The vertical support reaction at point

is
Diagram for Engineering Sciences question 10

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 11

Open question
XE-DMCQ2 marksNeeds review
A horizontal effort

is applied to raise a block of weight

on a rough surface inclined at an angle

with the horizontal. If

is the coefficient of static friction between the block and the surface, the minimum effort

required to impend the upward motion of the block along the surface is
Diagram for Engineering Sciences question 11

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 12

Open question
XE-DMCQ2 marksNeeds review
Three round bars of same material, equal lengths, and different cross-sectional dimensions are shown in the figures as Case-I, Case-II and Case-III. All the bars are clamped at the upper end, and a concentrated load

is applied at the lower end of each bar. If the elastic strain energy stored in the bar shown in Case-I is

then the elastic strain energy stored in Case-II and Case-III respectively is
Diagram for Engineering Sciences question 12

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 13

Open question
XE-DMCQ2 marksNeeds review
A rigid uniform rod with mass

, length

and center of gravity

is freely suspended from a hinge as shown in the figure. The rod is given a small angular displacement

in the counter-clockwise direction from the position in which it hangs vertically (

). If

is the acceleration due to gravity, the natural frequency of oscillations (in rad/s) is
Diagram for Engineering Sciences question 13

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