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WorksheetsSA1 PDF 11
Total questions: 20
Worksheet time: 12mins
Name
Class
Date
1.
Strain is defined as the ratio of change in dimension to its ______
a)
original dimension
b)
final dimension
c)
Both
d)
none of above
2.
The stress which is generated along the length of cylinder is termed as,
a)
shear stress
b)
hoop stress
c)
circumferential stress
d)
longitudinal stress
3.
Which one of the following is the equation of hoop stress?
a)
σc = p×d/2l
b)
σc = p×t/2d
c)
σc = p×d/2t
d)
σc = t×d/2p
4.
Which one of the following is the equation for longitudinal stress?
a)
σl = p×d/4t
b)
σl = p×d/2t
c)
σl = p×t/2d
d)
σl = p×t/4d
5.
If the thickness of the wall of the shell is less than or equal to 1/10 to 1/15 of its diameter, then the shell is called_____,
a)
thick cylindrical shell
b)
spherical shell
c)
thin cylindrical shell
d)
circular shell
6.
What is meant by 'η' in the equation of stress in a thin cylindrical shell?
a)
efficiency of stresses
b)
efficiency of energy
c)
efficiency of the joints
d)
efficiency of strain
7.
Which one of the following is the equation of the longitudinal strain in a cylindrical shell?<br />b) εl = (p×d/8tE) × (1-2μ) <br />c) εl = (p×d/4t) × (1-μ)<br />d) εl =(p×d/4tE) × (1-2μ)<br />
a)
εl = (p×d/4tE) × (1-μ)
b)
εl = (p×d/4tE) × (1-2μ)
c)
εl = (p×d/8tE) × (1-μ)
d)
εl = (p×d/8tE) × (1-2μ)
8.
The shear stress anywhere in a shell is_______.
a)
a) two times longitudinal stress
b)
b) zero
c)
c) equal to the hoop stress at that point
d)
d) equal to the hoop strain
9.
If a cylinder is open or very long, then________.
a)
a) σl = σh
b)
b) σh = 0
c)
c) σl = 2σh
d)
d) σl = 0
10.
A spherical shell of 80cm diameter is subjected to an internal pressure of 2N/mm*2. Find the thickness required for the shell, if allowable stress is 100 N/mm*2.<br />Take E=2×10*5 N/mm*2 and μ= 0.3.<br />
a)
a) t=2mm
b)
b) t=3mm
c)
c) t=1mm
d)
d) t=4mm
11.
The walls of a thin cylindrical shell is subjected to how many types of tensile stresses, if it is subjected to an internal pressure (p)?
a)
1
b)
2
c)
3
d)
4
12.
How many types of pressure vessels( shells) are there?
a)
1
b)
2
c)
3
d)
4
13.
Hoop stress/ circumferential stress is ______ in nature.
a)
a) compressive
b)
b) tensile
c)
c) both a and b
d)
d) none of above
14.
Radial pressure is ______ in nature.
a)
a) compressive
b)
b) tensile
c)
c) both a and b
d)
d) none of above
15.
The total force on one half of the cylinder exposed to the internal pressure 'p' is equal to,
a)
a) p×d/L
b)
b) p×d×t
c)
c) p×d×L
d)
d) p×d/2t
16.
Which one of the following is the equation of the volumetric strain of cylinder?
a)
a) εν = (p×d/4tE) × (5-μ)
b)
b) εν = (p×d/4tE) × (5-4μ)
c)
c) εν = (p×d/4t) × (5-4μ)
d)
d) none of above
17.
The shear stress anywhere in a shell is_______.
a)
a) two times longitudinal stress
b)
b) zero
c)
c) equal to the hoop stress at that point
d)
d) equal to the hoop strain
18.
Which one of the following is the equation of the longitudinal strain in a cylindrical shell?
a)
a) εl = (p×d/4tE) × (1-μ)
b)
b) εl = (p×d/8tE) × (1-2μ)
c)
c) εl = (p×d/4t) × (1-μ)
d)
d) εl =(p×d/4tE) × (1-2μ)
19.
What is meant by 'η' in the equation of stress in a thin cylindrical shell?
a)
a) efficiency of stresses
b)
b) efficiency of energy
c)
c) efficiency of the joints
d)
d) efficiency of strain
20.
The total force on one half of the cylinder exposed to the internal pressure 'p' is equal to,
a)
a) p×d/L
b)
b) p×d×t
c)
c) p×d×L
d)
d) p×d/2t
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