Strain Gauge Rosettes

Q. A rectangular region in a solid is in a state of plane strain. The (x, y) coordinates of the corners of the undeformed rectangle are given by P(0, 0), Q(4, 0), R(4, 3), S(0, 3). The rectangle is subjected to uniform strain ${\epsilon }_{xx}=0.001,{\epsilon }_{yy}=0.002,{\gamma }_{xy=0.003}$. The deformed length of the elongated diagonal, upto three decimal places, is _______
units.

1. 5.014

Q. An electrical resistance strain rosette indicates strains of -400, +800 and +500 along the x, y and 45° axes. What is the shearing strain ${\gamma }_{xy}?$

1. 100
2. 800
3. 600
4. -200