Correct option is D
Rail gauge:
The rail gauge of a railway track is defined as the clear minimum perpendicular distance between the inner faces of the two rails of a rail track.
Rail gauge:
The rail gauge of a railway track is defined as the clear minimum perpendicular distance between the inner faces of the two rails of a rail track.
The minimum density (g/cc) of corrugated and semi-corrugated asbestos cement sheets considered acceptable for construction purposes by the Indian standard is:
The actual discharge of liquid through an orifice is determined by multiplying ideal discharge by a factor called coefficient of discharge. The coefficient of discharge is given by __________.