MCQ
501. Soil এর permeability 0.8 mm/sec বলে soil কী ধরনের হতে পারে?
gravel
sand
silt
clay
502. 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
503. 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)
504. 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
505. Staggered rail joints are generally provided--
On curves
On tangents
On bridges
In tunnels
506. Uniformity Coefficient -
D10 /D60
D60/D10
D10/ D30
D30/0D10
507. উপরিউক্ত নমুনার Void ratio কত?
0.5
0.1
2.0
508. একটি বস্তুর বাতাসে ওজন= 3kg, পানিতে ওজন= 2.5kg হলে specific gravity কত ?
1
4
6
5
509. Hydrometer reading -এ কোন correction করা হয়?
তাপমাত্রা
Meniscus
Dispersing agent
সবগুলো
510. Soil-এর uniformity coefficient- typical value কত হয় ?
≥1
>1
0 থেকে1 এর মধ্যে।
কোনোটিই নয়
511. 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
512. soil এর Bulk density 22 N/m², Water content 10%, Dry density কত ?
18.6
20
22
23.2
513. Staggered rail joints are generally provided-
On curves
On tangents
On bridges
In tunnels
514. কোন soil এর Plasticity Index -= 0
Sand
Silt
Clay
Clayey silt
515. 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
516. 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
517. 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
518. কোন মাটির permeability বেশি?
চিকন বালি
মোটা বালি
কাদা
গ্রাভেল
519. 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
520. Plasticity Index=?
LL-PL
PL - LL
PL + LL
LL - SL