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WorksheetsCivil war sep 23-pwd
Total questions: 10
Worksheet time: 10mins
Name
Class
Date
1.
A plane element is subjected to shearing stresses of 50 MPa. The principal stresses existing in this element and the directions of the planes on which they occur would be _______ at __________ respectively.
a)
50 MPa at 45°
b)
50 MPa at 90°
c)
7 MPa at 45°
d)
7 MPa at 90°
2.
If the principal stress at a point in a stressed body are 150 kN/m² tensile and 50 kN/m² compressive, then maximum shear stress at this point will be
a)
100 kN/m²
b)
150 kN/m²
c)
200 kN/m²
d)
250 kN/m²
3.
What is the value of max shear stress on a ductile material under action of uniform axial stress equal to ultimate tensile strength
a)
Ultimate tensile strength
b)
> Ultimate tensile strength
c)
0.7 ultimate tensile strength
d)
0.5 ultimate tensile strength
4.
The radius of Mohr circle is zero when the state of stress is
a)
Shear stress is zero
b)
Pure shear
c)
Hydrostatic stress
d)
There is no shear stress but equal and opposite normal stress
5.
Principal plane and maximum shear plane are at
a)
90°
b)
45°
c)
0°
d)
180°
6.
The shear stress on the principal plane is
a)
Maximum
b)
Minimum
c)
Zero
d)
Intermediate
7.
On a plane, resultant stress is inclined at an angle of 45° to the plane. If the normal stress is 100 N/mm², the shear stress on the plane is:
a)
71.5 N/mm²
b)
100 N/mm²
c)
86.6 N/mm²
d)
120.8 N/mm²
8.
A 2D fluid element rotates like a rigid body. At a point within the element, the pressure is 1 unit. Radius of the Mohr's circle, for that point is
a)
0.5
b)
1
c)
0
d)
2
9.
A prismatic bar is subjected to axial tension. What is the aspect angle (φ) which defines an oblique section on which normal and shearing stresses are equal?
a)
30°
b)
45°
c)
60°
d)
90°
10.
Minor principal stress has minimum ________
a)
Value of shear stress acting on the plane
b)
Intensity of direct stress
c)
Both a and b
d)
None of the above
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