141.  The place where a railway line and a road cross each other at the same level, is known as
A. cross over
B. railway junction
C. road junction
D. level crossing

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142.  According to Railway Board, no diamond crossing should be flatter than
A. 1 in 6
B. 1 in 81/2
C. 1 in 12
D. 1 in 16.

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143. The distance between theoretical nose of crossing and actual nose of crossing for practical purposes, is
A. Nose thickness x tan a
B. Nose thickness x cot a
C. Nose thickness x sin a
D. Nose thickness x cos a.

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144. Pick up the correct statement from the following :
A. The line which connects a number of parallel tracks, and also provides an access to main track, is called a gathering line
B. With a diagonal gathering line, the length of the siding decreases with increase of its distance from main track
C. To have sidings of same length, a diagonal line is laid at one end and a parallel gathering line at the other end
D. All the above.

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145.  The spread between the point and splice rails at a distance of 4.25 m, is 50 cm. The size of the crossing is
A. 1 in 6
B. 1 in 81/2
C. 1 in 12
D. 1 in 16.

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146.  The overall length of a turn out is the distance between the end of stock rail and
A. heel of crossing
B. actual nose of crossing
C. throat of crossing
D. toe of crossing.

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147.  Heel of crossing is the line joining
A. ends of splice rail and point rail
B. ends of lead rails butting the crossing
C. ends of wing rails
D. throat and actual nose of crossing.

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