The value of dynamic gauge (G) used to calculate the super elevation is ________ for broad gauge railway tracks.

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  1. 1550 mm
  2. 1900 mm
  3. 1750 mm
  4. 1650 mm

Answer (Detailed Solution Below)

Option 3 : 1750 mm
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Explanation:
The equilibrium superelevation (\(e\)) is calculated using the following formula:

\(e = \frac{GV^2}{127R} \)

Where:

\(e=\) Superelevation in millimeters (mm)

\(V=\) Speed in kilometers per hour (km/h)

\(R=\) Radius of the curve in meters (m)

\(G=\) Dynamic gauge in millimeters (mm)

Dynamic Gauge (G):

The dynamic gauge (G) equal to the sum of the gauge and the width of the rail head in millimeters.

For Broad Gauge (BG) tracks: \(G = 1750 \ \text{mm} \)

For Meter Gauge (MG) tracks: \(G = 1080 \ \text{mm} \)

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