The shear stress component in xz-plane in Cartesian coordinates for horizontal line load is ___________

( _{xz}= frac{2Q}{xzsin cos u2061 } )

( _{xz}= frac{2Qxz^2}{ (x^2+z^2)^2} )

( _{xz}= frac{2Qx^3}{ (x^2+z^2)^2} )

( _{xz}= frac{2Qx^2 z}{ (x^2+z^2)^2} )

The stress component in x-direction on a horizontal plane in Cartesian coordinates for horizontal line load is ___________

( _x= frac{2Qx^2 z}{ (x^2+z^2)^2} )

( _x= frac{2Q}{xzsin cos u2061 } )

( _x= frac{2Qxz^2}{ (x^2+z^2)^2} )

( _x= frac{2Qx^3}{ (x^2+z^2)^2} )

( _x= frac{2Qx^2 z}{ (x^2+z^2)^2} )

(( frac{ ^2}{ r^2} + frac{1}{r} frac{ }{ r}+ frac{1}{r^2} frac{ ^2}{ ^2} )( _ )=0 )

(( frac{ ^2}{ r^2} + frac{1}{r} frac{ }{ r}+ frac{1}{r^2} frac{ ^2}{ ^2} )( _r+ _ )=0 )

(( frac{ ^2}{ r^2} + frac{1}{r} frac{ }{ r}+ frac{1}{r^2} frac{ ^2}{ ^2} )( _ )=0 )

(( frac{ ^2}{ r^2} + frac{1}{r} frac{ }{ r}+ frac{1}{r^2} frac{ ^2}{ ^2} )( _r )=0 )

(( frac{ ^2}{ r^2} + frac{1}{r} frac{ }{ r}+ frac{1}{r^2} frac{ ^2}{ ^2} )( _r+ _ )=1 )

( frac{ _r}{ r}+ frac{1}{r} frac{ _{r }}{ }=0 )

( frac{1}{r} frac{ _{r }}{ }+ frac{ _r- _ }{r}=0 )

( frac{ _r}{ r}+ frac{ _{r }}{ }+ frac{ _r- _ }{r}=0 )

( frac{ _r}{ r}+ frac{1}{r} frac{ _{r }}{ }+ frac{ _r- _ }{r}=0 )

( frac{ _r}{ r}+ frac{1}{r} frac{ _{r }}{ }=0 )

1.	The shear stress component in xz-plane in Cartesian coordinates for horizontal line load is ___________
A.	( _{xz}= frac{2Q}{xzsin cos u2061 } )
B.	( _{xz}= frac{2Qxz^2}{ (x^2+z^2)^2} )
C.	( _{xz}= frac{2Qx^3}{ (x^2+z^2)^2} )
D.	( _{xz}= frac{2Qx^2 z}{ (x^2+z^2)^2} )
Answer» E.

2.	The stress component in x-direction on a horizontal plane in Cartesian coordinates for horizontal line load is ___________
A.	( _x= frac{2Q}{xzsin cos u2061 } )
B.	( _x= frac{2Qxz^2}{ (x^2+z^2)^2} )
C.	( _x= frac{2Qx^3}{ (x^2+z^2)^2} )
D.	( _x= frac{2Qx^2 z}{ (x^2+z^2)^2} )
Answer» D. ( _x= frac{2Qx^2 z}{ (x^2+z^2)^2} )

3.	The relation between the shear stress component in xz-plane in Cartesian coordinates and polar coordinates for vertical line load is ___________
A.	<sub>xz</sub>= <sub>r</sub> tan<sup>2 u2061</sup>
B.	<sub>xz</sub>= <sub>r</sub> cosec<sup>2 u2061</sup>
C.	<sub>xz</sub>= <sub>r</sub> sin cos u2061
D.	<sub>xz</sub>= <sub>r</sub> sin<sup>2 u2061</sup>
Answer» D. <sub>xz</sub>= <sub>r</sub> sin<sup>2 u2061</sup>

4.	The relation between the stress component in z-direction on a horizontal plane in Cartesian coordinates and polar coordinates for vertical line load is ___________
A.	<sub>z</sub>= <sub>r</sub> cos<sup>2 u2061</sup>
B.	<sub>z</sub>= <sub>r</sub> cosec<sup>2 u2061</sup>
C.	<sub>z</sub>= <sub>r</sub> cos u2061
D.	<sub>z</sub>= <sub>r</sub> sin<sup>2 u2061</sup>
Answer» B. <sub>z</sub>= <sub>r</sub> cosec<sup>2 u2061</sup>

5.	The relation between the stress component in x-direction on a horizontal plane in Cartesian coordinates and polar coordinates for vertical line load is ___________
A.	<sub>x</sub>= <sub>r</sub> tan<sup>2 u2061</sup>
B.	<sub>x</sub>= <sub>r</sub> cosec<sup>2 u2061</sup>
C.	<sub>x</sub>= <sub>r</sub> cos u2061
D.	<sub>x</sub>= <sub>r</sub> sin<sup>2 u2061</sup>
Answer» E.

6.	The compatibility equation in terms of stress components in polar coordinates are given by ____________
A.	(( frac{ ^2}{ r^2} + frac{1}{r} frac{ }{ r}+ frac{1}{r^2} frac{ ^2}{ ^2} )( _r+ _ )=0 )
B.	(( frac{ ^2}{ r^2} + frac{1}{r} frac{ }{ r}+ frac{1}{r^2} frac{ ^2}{ ^2} )( _ )=0 )
C.	(( frac{ ^2}{ r^2} + frac{1}{r} frac{ }{ r}+ frac{1}{r^2} frac{ ^2}{ ^2} )( _r )=0 )
D.	(( frac{ ^2}{ r^2} + frac{1}{r} frac{ }{ r}+ frac{1}{r^2} frac{ ^2}{ ^2} )( _r+ _ )=1 )
Answer» B. (( frac{ ^2}{ r^2} + frac{1}{r} frac{ }{ r}+ frac{1}{r^2} frac{ ^2}{ ^2} )( _ )=0 )

7.	The equilibrium equation in polar coordinates is given by _____________
A.	( frac{1}{r} frac{ _{r }}{ }+ frac{ _r- _ }{r}=0 )
B.	( frac{ _r}{ r}+ frac{ _{r }}{ }+ frac{ _r- _ }{r}=0 )
C.	( frac{ _r}{ r}+ frac{1}{r} frac{ _{r }}{ }+ frac{ _r- _ }{r}=0 )
D.	( frac{ _r}{ r}+ frac{1}{r} frac{ _{r }}{ }=0 )
Answer» D. ( frac{ _r}{ r}+ frac{1}{r} frac{ _{r }}{ }=0 )