RAILWAY ENGINEERING QUIZ

If a is the angle of crossing, then the number of crossings ‘N’ according to right angle method is given by

Vi cosec(a/2)

cot(a)

Vi cot(cc/2)

cot(oc/2)

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The purpose of providing fillet in a rail section is to

Increase the lateral strength

Avoid the stress concentration

Increase the vertical stiffness

Reduce the wear

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Normally maximum cant permissible in Meter Gauge is

90 mm

75 mm

140 mm

165 mm

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The limiting value of cant excess for Broad Gauge is

75 mm

l00 mm

55 mm

65 mm

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Cant deficiency occurs when a vehicle travels around a curve at

Speeds higher than equilibrium speed

Speeds lower than equilibrium speed

Equilibrium speed

Booked speed

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The compensation for curvature on gradient for Meter Gauge is given by (where R is radius of curve.)

52.5/R

105/R

35/R

70/R

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Which of the following methods of designation of crossing is mostly used in India ?

center line method

None of these

isosceles angle method

right angle method

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In a shunting signal if the red band is inclined at 45° it indicates

None of these

proceed cautiously

stop

proceed

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Tensile strength of steel used in rails should not be less than

700 MPa

500 MPa

850 MPa

450 MPa

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Which of the following mechanical devices is used to ensure that route cannot be changed while the train is on the point even after putting back the signal ?

point lock

iock bar

stretcher bar

detectors

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