অন্যান্য

276. Which of the following ratios are termed as seepage exit gradient?

• ক. total head to the length of seepage.
• খ. flow line to slope
• গ. head upstream to that at down stream.
• ঘ. head loss to the length of seepage.

277. The bio-chemical treatment of sewage effluent is a process of -

• ক. oxidation
• খ. deoxidation
• গ. sedimentation
• ঘ. selt-purification

278. An under-reinforced section means -

• ক. steel is provided at the underside only
• খ. steel provided is in-sufficient
• গ. steel provided on one side only
• ঘ. steel will yield first

279. A three-hinged arch is -

• ক. statically deteminate
• খ. statically indeterminate
• গ. geometrically unstable
• ঘ. none of these

280. Concurrent forces are those forces whose lines of action -

• ক. lie on the same line
• খ. meet at one point
• গ. meet of the same plane
• ঘ. None of these

281. For which type of soil, a higher density and lower optimum water content can easily be achieved -

• ক. coarse grained soil
• খ. fine grained soil
• গ. cohesion less soil
• ঘ. saturated soil

282. Which one of the following is used in trickling filter?

• ক. filtration process
• খ. biological action
• গ. none of a or b
• ঘ. both a and b

283. Slope stability of a purely frictional soil depens on -

• ক. Slope angle
• খ. factor of safety
• গ. frictional resistace
• ঘ. none of these

284. The hoop stress in a thin cylindrical shell is -

• ক. longitudinal stress
• খ. compressive stress
• গ. radial stress
• ঘ. cricumferential stress

285. At the neutral axis of a beam, the shear stress is,

• ক. zero
• খ. minimum
• গ. maximum
• ঘ. infinity

286. What is the primary function of a fish-plate?

• ক. to join the two rails together
• খ. to join the rails with sleeper
• গ. to allow the rails to expand/contract freely.
• ঘ. none of the above

287. Co-efficient of friction depends on -

• ক. area of contract only
• খ. nature of surface only
• গ. both a and b
• ঘ. none of these

288. Vertical sides of columns may be be strippted after,

• ক. 1-2 day
• খ. 7 days
• গ. 14 days
• ঘ. 21 days

289. Moment of inertia of a triangle having base 'b' and height 'h' about an axis through its base is -

• ক. bh³/4
• খ. bh³/8
• গ. bh³/12
• ঘ. bh³/36

290. When the angle of internal friction of a sand soil is 30, what will be the co-efficient of passive earth pressure at 8m below ground level for a fully saturated soil?

• ক. 4
• খ. 5
• গ. 3
• ঘ. 1/3

291. When a force lies in the same plane of a plate fastened by a group of rivets, the rivets experience -

• ক. only shear stress
• খ. only tensile stress
• গ. both shear and tensile stress
• ঘ. none of shear or tensile stress

292. Which of the following materials is least used in a trussed structure.

• ক. wood
• খ. steel
• গ. aluminum
• ঘ. concrete

293. The base material for distemper is -

• ক. chalk
• খ. lime
• গ. clay
• ঘ. lime putty

294. When a beam is subject of bending moment, the stress at any point is - the distance of the point from the neutral axis -

• ক. equal to
• খ. directly proportional to
• গ. inversely proportional to
• ঘ. independent of

295. The road surface should be -

• ক. impervious
• খ. durable
• গ. stable
• ঘ. all of these

296. Normally, the tensile strength of concrete is about - of its compressive strength -

• ক. 10-15%
• খ. 15-20%
• গ. 20-25%
• ঘ. 25-30%

297. The product of Young's modulus and moment of inertia is known as -

• ক. modulus of rigidity
• খ. balk modulus
• গ. feexaral rigidity
• ঘ. torsional rigidity

298. In virtual work method, which one is the virtual quantity?

• ক. displacement
• খ. load
• গ. slope
• ঘ. moment

299. The maximum permissible chloride content in water for domestic supplies should not exceed -

• ক. 250 ppm
• খ. 350 ppm
• গ. 450 ppm
• ঘ. 550 ppm

300. অল্পচাপ সূক্ষ্মভাবে পরিমাপ করতে ব্যবহার করা হয় -

• ক. পিজোমিটার
• খ. ইউটিউব
• গ. বার্ডনাটিউব
• ঘ. ম্যানোমিটার