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