Which of the following locations is not to be checked for Gauge and cross level correctness?

Which of the following locations is not to be checked for Gauge and cross level correctness? Correct Answer 300mm behind the ANC

Gauge and cross level needs to be checked for their correctness for smooth journey. The locations at which they need to be checked include 150mm behind the ANC, 1m ahead of the nose and 1m behind the ANC on straight tracks and on turnouts.

Related Questions

A well of cross-sectional area aw is connected to an inclined tube of cross-sectional area at to form a differential pressure gauge as shown in the figure below. When p1 = p2 the common liquid level is denoted by A. When p1 > p2, the liquid level in the well is depressed to B, and the level in the tube rises by l along its length such that difference in the tube and well levels is hd. The angle of inclination θ of the tube with the horizontal is