Instruments/Parts of instruments | Operations | ||
P | Bubble tube | i | Tacheometry |
Q | Plumb bob | ii | Minor movements |
R | Tangent screw | iii | Centering |
S | Stadia cross-wire | iv | Levelling |
For the beam and loading shown in the figure, the second derivative of the deflection curve of the beam at the mid-point of AC is given by \( \frac{\alpha M_0}{8EI} \). The value of \( \alpha \) is ........ (rounded off to the nearest integer).
In levelling between two points A and B on the opposite banks of a river, the readings are taken by setting the instrument both at A and B, as shown in the table. If the RL of A is 150.000 m, the RL of B (in m) is ....... (rounded off to 3 decimal places).