Question:
When a train passes on curves which have no super elevation, it will give thrust on the
When a train passes on curves which have no super elevation, it will give thrust on the
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Without super elevation,
\[
\boxed{
\text{Centrifugal force}
\rightarrow
\text{Outer rail}
}
\]
The wheel flange presses against the inner face of the outer rail.
Updated On: Jul 23, 2026
- Inner rail
- Outer rail
- Inner side of inner rail
- Inner side of outer rail
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The Correct Option is D
Solution and Explanation
Concept:
When a train negotiates a curve, centrifugal force acts outward.
Super elevation is provided to counteract this force.
If no super elevation is provided, the centrifugal force causes the wheel flanges to press against the inner face of the outer rail.
Step 1: Understand the effect of centrifugal force. The centrifugal force pushes the train towards the outside of the curve. As a result, the outer rail experiences greater lateral thrust.
Step 2: Identify the point of contact. The wheel flange bears against the \[ \boxed{\text{Inner side of the outer rail}.} \] Hence, the correct option is \[ \boxed{(D)\;\text{Inner side of outer rail}.} \]
Step 1: Understand the effect of centrifugal force. The centrifugal force pushes the train towards the outside of the curve. As a result, the outer rail experiences greater lateral thrust.
Step 2: Identify the point of contact. The wheel flange bears against the \[ \boxed{\text{Inner side of the outer rail}.} \] Hence, the correct option is \[ \boxed{(D)\;\text{Inner side of outer rail}.} \]
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