MCQ
521. The main function of a fish plate is--
To join the two rails together
To join rails with the sleeper
To allow rail to expand and contract freely
None of the above
522. Type of switch rails generally adopted for modern track, is--
Straight switch
Curved switch
Loose heel switch
Bent switch
523. If n is length of a rail in metres, the number of sleepers per rail length generally varies from--
n to (n+2)
(n+2) to (n+4)
(n+3) to (n+6)
(n+4) to (n+5)
524. Consider the following statements about concrete sleepers. 1. They improve the track modulus. 2. They have good scrap value. 3. They render transportation easy. 4. They maintain the gauge quite satisfactorily. Of these statements--
1 and 2 are correct
2 and 3 are correct
3 and 4 are correct
1 and 4 are correct
525. Pandrol clips cannot be used with--
Wooden sleepers
Concrete sleepers
CST-9 sleepers
Steel trough sleepers
526. Normally maximum cant permissible in Meter Gauge is--
75 mm
90 mm
140 mm
165 mm
527. On Indian Railways, number of a crossing is defined as--
Sine of angle of crossing
Cosine of angle of crossing
Tangent of angle of crossing
Contingent of angle of crossing
528. Clay soil-t particle size silt-এর চেয়ে-
বড়
ছোট
সমান
কোনোটিই নয়
529. Angle of internal friction 30° হলে coefficient of active earth pressure ?
3
1/3
1
1/2
530. Coefficient of curvature -
D30^2/ D20xD10
D10^2/ 060×D30
D20/D60×D20
D30^2/ D60×D10
531. Constant head premeameter দিয়ে কোন ধরনের soil-এ permeability নির্ণয় করা হয়।
course sand
fine sand
sit
clay
532. Pick up the correct statement from the following:--
An extra width of 7.5 cm ballast is provided on outside a curve if track is laid with short welded rails
An extra width of 7.5 cm ballast is provided on outside a curve sharper than 3° on B.G. and M.G. tracks
An extra width of 15 cm ballast is provided on each shoulder if the track is laid with welded rails
All the above
533. Pick up the incorrect statement from the following-
Sleepers hold the rails at proper gauge on straights
Sleepers provide stability to the permanent way
Sleepers act as an elastic cushion between rails and ballast
None of these
534. The purpose of providing fillet in a rail section is to--
Increase the lateral strength
Increase the vertical stiffness
Avoid the stress concentration
Reduce the wear
535. Two important constituents in the composition of steel used for rail are--
Carbon and silicon
Manganese and phosphorous
Carbon and manganese
Carbon and Sulphur
536. Void ration (e) এবং Porosity (n) এর সম্পর্ক কিরূপ?
n= 1 +e/1-e
n = 1+n/1-n
n = e/1 – e
n = n/1-n
537. For providing the required tilt of rails, adazing of wooden sleepers, is done for--
Bull headed rails
Double headed rails
Flat footed rails
Any type of rails
538. Which of the following types of sleepers is preferred on joints?
CST-9 sleeper
Steel trough sleeper
Wooden sleeper
Concrete sleeper
539. Total effective bearing area of both the bowls of a pot sleeper, is-
Slightly more than that of a wooden sleeper
Slightly less than that of a wooden sleeper
Equal to that of a wooden sleeper
None of these
540. Flange-way clearance is the distance--
Between the adjoining faces of the running rail and the check rail near the crossing
Between the gauge faces of the stock rail and the tongue rail
Through which the tongue rail moves laterally at the toe of the switch
None of the above