When a train is rounding a curve, the side thrust on the wheel flanges is prevented by raising the outer edge of the rail.

Related MCQs

• The amount by which the outer edge of the rail is raised, is known as super-elevation.
• In a single threaded worm and worm wheel, the number of teeth on the worm is 50. The diameter of the effort wheel is 100 mm and that of load drum is 50 mm. The velocity ratio is
• The velocity ratio of a simple wheel and axle with D and d as the diameters of effort wheel and load axle, is
• The motion of a wheel of a car is
• In a wormed geared pully block, if the number of teeth one the worm wheel is doubled, then its velocity ratio is also doubled.
• The centre of gravity of an equilateral triangle with each side a, is
• The triangle law of forces states that if two forces acting simultaneously on a particle, be represented in magnitude and direction by the two sides of a triangle taken in order, then their resultant may be represented in mangnitude and direction by the third side of of a triangle, taken in opposite order.
• The polygon law of forces states that if a number of forces, acting simultaneously on a particle, be represented in magnitude and direction by the sides a polygon taken in order, then their resultant is represented in magnitude and direction by the closing side of the polygon, taken in opposite direction.
• The moment of inertia of a square of side about its diagonal is
• The moment of inertia of a square of side a about its base is a4 / 3