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WorksheetsCivilwar Day 5(Sep 19)-PWD
Total questions: 10
Worksheet time: 10mins
Name
Class
Date
1.
A ratio of moment carrying capacity of a circular beam of diameter D and square beam of size D is:
a)
π/4
b)
3π/8
c)
π/3
d)
3π/16
2.
Pure bending is that bending where
a)
Shear stress is maximum
b)
Bending stress is maximum
c)
Shear stress is nil
d)
Bending stress is nil
3.
Which of the following is the most efficient in carrying the bending moment?
a)
Rectangular section
b)
Circular section
c)
I-Section
d)
T-section
4.
Beam of uniform strength means
a)
beam in which tensile stress developed is constant
b)
beam in which bending stress developed is constant
c)
is equal to the allowable stress
d)
Both b and c
5.
In a simply supported beam loaded with U.D.L over the whole section, the bending stress is …………. at top and ………….. at bottom.
a)
Compressive, tensile
b)
Tensile, compressive
c)
Tensile, zero
d)
Compressive, zero
6.
Section modulus of hollow rectangular section is
a)
(BD³ − bd³)/6D
b)
(BD³ − bd³)/6B
c)
(BD³ − bd³)/12D
d)
(BD³ − bd³)/12B
7.
In an I -section , the bending moment is resisted mainly by
a)
Flanges only
b)
Web only
c)
Both by flanges and web
d)
None of these
8.
A rectangular beam of size 60 mm x 100 mm has a central rectangular hole of size 15 mm x 20 mm. The beam is subjected to bending and the maximum bending stress is limited to 100 N/mm² . Find the moment of resistance of the hollow beam section.
a)
30kNm
b)
20kNm
c)
10kNm
d)
5kNm
9.
A beam strongest in flexure is the one which has
a)
maximum bending stress
b)
maximum area of cross section
c)
maximum section modulus
d)
maximum moment of inertia
10.
A simply supported beam of span 6m and 75 mm diameter carries a udl of 1.5 KN/m. What is the maximum value of bending stress (Mpa) ?
a)
162.98 MPa
b)
325.95 MPa
c)
625.95 MPa
d)
651.90 MPa
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