MCQ
3501. একটি বস্তুর বাতাসে ওজন= 3kg, পানিতে ওজন= 2.5kg হলে specific gravity কত ?
1
4
6
5
3502. Staggered rail joints are generally provided-
On curves
On tangents
On bridges
In tunnels
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. 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
3505. Staggered rail joints are generally provided--
On curves
On tangents
On bridges
In tunnels
3506. Normally maximum cant permissible in Meter Gauge is--
75 mm
90 mm
140 mm
165 mm
3507. soil এর Bulk density 22 N/m², Water content 10%, Dry density কত ?
18.6
20
22
23.2
3508. 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
3509. 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
3510. Type of switch rails generally adopted for modern track, is--
Straight switch
Curved switch
Loose heel switch
Bent switch
3511. 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
3512. 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)
3513. 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
3514. Soil-এর uniformity coefficient- typical value কত হয় ?
≥1
>1
0 থেকে1 এর মধ্যে।
কোনোটিই নয়
3515. 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)
3516. 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
3517. 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
3518. 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
3519. Plasticity Index=?
LL-PL
PL - LL
PL + LL
LL - SL
3520. Uniformity Coefficient -
D10 /D60
D60/D10
D10/ D30
D30/0D10