GATE Civil Engineering
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Following are the statements related to the stress paths in a triaxial testing of soils:

  1. If $\sigma_1 = \sigma_3$, the stress point lies at the origin of the $p-q$ plot
  2. If $\sigma_1 = \sigma_3$, the stress point lies on the $p$-axis of the $p-q$ plot
  3. If $\sigma_1 > \sigma_3$, both stress points $p$ and $q$ are positive

For the above statements, the correct combination is

  1. P – False; Q – True; R – True
  2. P – True; Q – False; R – True
  3. P – False; Q – True; R – False
  4. P – True; Q – False; R – False
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