Civil Engineering - UPSC Civil Service Exam Questions

Two springs of stiffnesses K_A and K_B are placed on inside the other so as to compressed by the same amount under an applied axial load. The combined stiffness of the two springs will be

If the Young's modulus 'E' is equal to bulk modulus 'K', then what is the value of the Posson's ratio ?

At the time of initial tensioning the maximum tensile stress in tendon immediately behind the anchorage shall Not exceed

The following statements relate to a laminar flow :
1. Laminar flow is rotational.
2. In laminar flow the loss of head is proportional to the square of the velocity.
3. In laminar flow the loss of head is proportional to the first power of viscosity.
4. In laminar flow the velocity is constant over the cross-section.
5. Other quantities remaining the same, increase in diameter will increase the Reynolds number in laminar flow.
Of these statements :

Plate load test is useful to estimate