Correct answer
C. 40 mm
Explanation
The correct answer is 40 mm.
52 kg rails are mostly used in________?
The preparation of surface of stone to obtain plain edges or to obtain stones of required size and shape is known as________?
If the ratio of the span to the overall depth does not exceed 10, the stiffness of the beam will ordinarily be satisfactory in case of a________?
Sewerage system is designed for________?
The functional depreciation is sometimes called ________?
“An Electromagnetic wave falls on to a boundary between two losses less homogeneous media with different refractive indices, a part of the wave is reflected back to the incident medium and the rest is transmitted on to the second media”. This phenomenon is known as________?