MCQ- INITIALLY CURVED BEAMS

https://www.mesubjects.net/wp-admin/post.php?post=2310&action=edit    Q. Ans. Simple stresses-1

https://www.mesubjects.net/wp-admin/post.php?post=6112&action=edit      Q. Ans. simple stresses-2

https://www.mesubjects.net/wp-admin/post.php?post=7658&action=edit     MCQ Simple stresses

https://www.mesubjects.net/wp-admin/post.php?post=4227&action=edit            MCQ Principal stresses-2

https://www.mesubjects.net/wp-admin/post.php?post=7429&action=edit          MCQ Shear stresses in beams-1

https://www.mesubjects.net/wp-admin/post.php?post=8001&action=edit         MCQ Shear stresses in beams-2

https://www.mesubjects.net/wp-admin/post.php?post=7433&action=edit          MCQ Bending & Axial Loading Combined

https://www.mesubjects.net/wp-admin/post.php?post=4290&action=edit        MCQ Bending Stresses Beams-2

https://www.mesubjects.net/wp-admin/post.php?post=4179&action=edit         MCQ Bending stresses in beams-1

https://www.mesubjects.net/wp-admin/post.php?post=10594&action=edit       MCQ Stresses in Rotating Discs

MCQ-CURVED BEAMS

MCQ increase clarity and understanding. The centroid axis does not coincide with the neutral axis. Maximum stress occurs on the innermost fiber.

  Centroid and neutral axes are

  1. Intersecting

  2. Coincident

  3. Parallel

  4. None

ANS©

Distance represented between centroid and neutral axis by

  1. X

  2. Y

  3. Z

  4. None

ANS: (d)

Maximum stress in the curved beam is in the

  1. Innermost fiber

  2. Outermost fiber

  3. Innermost & outermost fibers

  4. None

ANS: (a)

In which fiber of curved beam, Stress is minimum?

  1. Outermost fiber

  2. Innermost fiber

  3. Innermost & outermost fibers

  4. None

ANS: (a)

 Maximum stress is present

  1. Bending moment

  2. Axial load

  3. Axial load & bending moment

  4. None

ANS: ©

Neural axis is

  1. Away from the center of curvature

  2. At the center of curvature

  3. Towards the center of curvature

  4. None

ANS: (c)

Variation of stress in the beam is

  1. Linear

  2. Parabolic

  3. Exponential

  4. None

ANS: (d)

  Stress variation in beam is

  1. Hyperbolic

  2. Parabolic

  3. Linear

  4. None

ANS: (c)

Minimum stress in the outermost fiber is

  1. P/A

  2. M/Z

  3. P/A + M/Z

  4. None

ANS: (d)

In the innermost fiber, stress is

  1. P/A – M/Z

  2. M/Z

  3. P/A

  4. None

ANS: (d)

Outermost fiber has the stress

  1. M/Z + P/A

  2. M/Z

  3. P/A

  4. None

ANS: (c)

 Curved beams are of

  1. Three types

  2. Four types

  3. Only one type

  4. None

ANS: (d)

 Types of curved beams are

  1. Two

  2. Four

  3. three

  4. None

ANS:  (a)

For small curvature curved beam

  1. Ratio h/R > 1

  2. Quantity h/R <1

  3. h/R >2

  4. None

ANS: (c)

Large curvature curved beam

  1. h/R> 1

  2. h/R <2

  3. h/R >2

  4. None

ANS: (b)

  Initial stress in curved beam

(i) No

(ii) Yes

(iii) Cannot say

(iv) None

ANS. (ii)

 Name formula for stresses in a curved beam.

(i) Hook’s formula

(ii) Lame’s equation

(iii) Winkler Bach Formula

(iv) None

ANS: (iii)

Winkler Bach Formula

(a) σi =Mci /Aero ,  σo=Mci /Aero

(b) σi =Mco /Aero ,  σo=Mci /Aero

(c)  σi =Mci /Aeri,  σo=Mco /Aero

(d) None

ANS: (c)

Bending moment is calculated

(a) Centroid axes

(b) neutral Axis

(c) Centroid & neutral axis

(d) None

ANS: (a)

For rectangular section,

(a) r = ri -h/2 & r =ri / ln(ro/ri)

(b) r = ri +h/2 & r =ri / ln(ro/ri)

(c) r = ri + h/2 & r =h / ln(ro/ri)

(d) None

ANS: (c)