71. Stretcher bar is provided
a) to permit lateral movement of the tongue rail
b) to maintain the two tongue rails at the exact distance
c) to ensure exact gauge at the toe of the switch as well as the nose of crossing
d) to prevent any vertical movement between the wing rail and nose of crossing
Ans: b
72. Which of the following methods of designation of crossing is mostly used in India ?
a) centre line method
b) right angle method
c) isosceles angle method
d) none of the above
Ans: b
73. If a is the angle of crossing, then the number of crossings 'N' according to right angle method is given by
a) Vi cot(cc/2)
b) cot(oc/2)
c) cot(a)
d) Vi cosec(a/2)
Ans: c
74. Which of the following turnouts is most commonly used for goods train on Indian Railways ?
a) 1 in 8'/2
b) 1 in 12
c) 1 in 16
d) 1 in 20
Ans: a
75. Lead of crossing is the distance from the
a) heel of the switch to the toe of the switch
b) heel of the switch to the theoretical nose of the crossing
c) toe of the switch to the theoretical nose of crossing
d) toe of the switch to the actual nose of crossing
Ans: b
76. Number of switches provided on a Gaunt-letted track is
a) 1
b) 2
c) 3
d) none of the above
Ans: d
77. The correct relation between curve lead (CL), switch lead (SL) and lead of cros¬sing (L) is given by
a) CL = L - SL
b) L =CL-SL
c) SL = L + CL
d) L = (CL+SL)/2
Ans: b
78. In a scissors cross-over, the crossings 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
a) (i) and (iii)
b) (i)and(iv)
c) (ii) and (iii)
d) (ii) and (iv)
Ans: b
79. The distance through which the tongue rail moves laterally at the toe of the switch for movement of trains is called
a) flangeway clearance
b) heel divergence
c) throw of the switch
d) none of the above
Ans: c
80. Flangeway clearance is the distance
a) between the adjoining faces of the running rail and the check rail near the crossing
b) between the gauge faces of the stock rail and the tongue rail
c) through which the tongue rail moves laterally at the toe of the switch
d) none of the above
Ans: a
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a) to permit lateral movement of the tongue rail
b) to maintain the two tongue rails at the exact distance
c) to ensure exact gauge at the toe of the switch as well as the nose of crossing
d) to prevent any vertical movement between the wing rail and nose of crossing
Ans: b
72. Which of the following methods of designation of crossing is mostly used in India ?
a) centre line method
b) right angle method
c) isosceles angle method
d) none of the above
Ans: b
73. If a is the angle of crossing, then the number of crossings 'N' according to right angle method is given by
a) Vi cot(cc/2)
b) cot(oc/2)
c) cot(a)
d) Vi cosec(a/2)
Ans: c
74. Which of the following turnouts is most commonly used for goods train on Indian Railways ?
a) 1 in 8'/2
b) 1 in 12
c) 1 in 16
d) 1 in 20
Ans: a
75. Lead of crossing is the distance from the
a) heel of the switch to the toe of the switch
b) heel of the switch to the theoretical nose of the crossing
c) toe of the switch to the theoretical nose of crossing
d) toe of the switch to the actual nose of crossing
Ans: b
76. Number of switches provided on a Gaunt-letted track is
a) 1
b) 2
c) 3
d) none of the above
Ans: d
77. The correct relation between curve lead (CL), switch lead (SL) and lead of cros¬sing (L) is given by
a) CL = L - SL
b) L =CL-SL
c) SL = L + CL
d) L = (CL+SL)/2
Ans: b
78. In a scissors cross-over, the crossings 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
a) (i) and (iii)
b) (i)and(iv)
c) (ii) and (iii)
d) (ii) and (iv)
Ans: b
79. The distance through which the tongue rail moves laterally at the toe of the switch for movement of trains is called
a) flangeway clearance
b) heel divergence
c) throw of the switch
d) none of the above
Ans: c
80. Flangeway clearance is the distance
a) between the adjoining faces of the running rail and the check rail near the crossing
b) between the gauge faces of the stock rail and the tongue rail
c) through which the tongue rail moves laterally at the toe of the switch
d) none of the above
Ans: a
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