Match List-I and List-ll and select correct answer using codes given below the lists:
List-1
A. Distance between adjoining face of running rail and check rail
B. Distance through which the tongue rail moves laterally at the toe of switch for the movement of rails
C. Distance between the gauge faces of the stock rail and tongue rail at the heel
D. Angle between the gauge face of stock rail and tongue rail
List-II
1. Heel divergence
2. Flangeway clearance
3. Throw of switch
4. Switch angle
Flangeway clearance: Distance between adjoining face of running rail and check rail.
Throw of switch: It is the distance through which the toe of the tongue moves sideways to provide a path for the desired direction over the turnout
If α is the angle of crossing, then the number of crossing ‘N’ according to right angle method is given by
Answer (b) and (d) are correct for centre line method and isosceles trianale method respectively.
Lead of crossing is the distance from the
Number of switches provided on a Gauntletted track is
The correct relation between Curve Lead (CL), Switch Lead (SL) and Lead of crossing (L) is given by
In a scissors crossover, the crossing provided are
(i) 2 obtuse angle crossings
(ii) 4 obtuse angle crossings
(iii) 4 acute angle crossings
(iv) 6 acute angle crossings
The correct answer is
The distance through which the tongue rail moves laterally at the toe of the switch for movement of trains is called
Flangeway clearance is the distance
Heel divergence is
Heel divergence is equal to flange way clearance plus tolerance for the wear plus the width of head of rail.
If 'A’ is the angle formed by two gauge faces, the crossing number will be
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