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