MCQ
3501. Plasticity Index=?
LL-PL
PL - LL
PL + LL
LL - SL
3502. 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
3503. 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
3504. Uniformity Coefficient -
D10 /D60
D60/D10
D10/ D30
D30/0D10
3505. একটি বস্তুর বাতাসে ওজন= 3kg, পানিতে ওজন= 2.5kg হলে specific gravity কত ?
1
4
6
5
3506. Staggered rail joints are generally provided--
On curves
On tangents
On bridges
In tunnels
3507. In a B.G. railway track, the specified ruling gradient is 1 in 250. The horizontal curve of 3" on a gradient of 1 in 250 will have the permissible gradient of--
1 in 257
1 in 357
1 in 457
1 in 512
3508. On either side of the centre line of rails, a cant of 1 in 20 in the sleeper is provided for a distance of--
150 mm
165 mm
175 mm
185 mm
3509. The arrangement of rails which permit trains to cross another track and also to divert to the other track, is called--
Diamond crossing
Diamond crossing with single slip
Diamond crossing with double slip
Cross over
3510. Soil-এর uniformity coefficient- typical value কত হয় ?
≥1
>1
0 থেকে1 এর মধ্যে।
কোনোটিই নয়
3511. In a B.G. railway track, the specified ruling gradient is 1 in 250. The horizontal curve of 3" on a gradient of 1 in 250 will have the permissible gradient of--
1 in 257
1 in 357
1 in 457
1 in 512
3512. Type of switch rails generally adopted for modern track, is--
Straight switch
Curved switch
Loose heel switch
Bent switch
3513. Staggered rail joints are generally provided-
On curves
On tangents
On bridges
In tunnels
3514. On either side of the centre line of rails, a cant of 1 in 20 in the sleeper is provided for a distance of--
150 mm
165 mm
175 mm
185 mm
3515. The following tests are conducted for rails: (i) Falling weight test (ii) Tensile test (iii) Hammer test The compulsory tests are--
Only (i)
(i) and (ii)
(ii) and (iii)
(i) and (iii)
3516. 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)
3517. soil এর Bulk density 22 N/m², Water content 10%, Dry density কত ?
18.6
20
22
23.2
3518. Normally maximum cant permissible in Meter Gauge is--
75 mm
90 mm
140 mm
165 mm
3519. A CST-9 sleeper consists of--
Two inverted triangular pots on either side of rail seat
A central plate with a projected key and box on the top of plate
A tie bar and 4 cotters to connect two cast iron plates
All the above
3520. The arrangement of rails which permit trains to cross another track and also to divert to the other track, is called--
Diamond crossing
Diamond crossing with single slip
Diamond crossing with double slip
Cross over