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MCQ
2281. The transverse reinforcements provided at right angles to the main reinforcements in a slab--
Distributed load
Resist the temperature stress
Resist the shrinkage stress
All of the above
ব্যাখ্যাঃ The distribution reinforcement have termed as transvers reinforcement is provided that to resist the stresses produced by temperature changes and shrinkage of concrete in that direction.
2282. Plane and geodetic surveying are classification of surveying based on:
Methodology
Earth's curvature
Ojbect of survey
Instrument
2283. A soil consolidated under the existing over- burden pressure, is called:
Pre-consolidated
Normally consolidated
Over-consolidated
None of these
ব্যাখ্যা: Over-consolidation is a relative term which compare the stress acting on soild in current state, to highest stress experienced by the soil. If the current stress is less than that applied in the past the soil is over consolidated.
2284. Uniformity coefficieny of a soil is:
equal to or greater than 1
equal to 1
equal to or less than 1
none of these
ব্যাখ্যাঃ The uniformity coefficient (cu) is defined as the ratio of Due to Dio A value of cu greater than 4 to 6 classific the soil as well graded. When cu is less than 4, it is classified as poorly graded or uniformly graded soil. Uniformly graded soil has identical particles with cu value approximately equal to 1.
2285. The walls which are necessary on the hill side of roadway where earth has to retained from slipping is knows as:
Retaining wall
Breast wall
Parapet wall
None of these
2286. After pre-stressing process is completed, loss of stress occurs due to-
Shrinkage of concrete
Creep of concrete
Elastic shortening of concrete
All of the above
ব্যাখ্যা: Loss of stress occurs due 10- (i) due to anchorage slip (ii)due to shrinkage of concrete, (iii) due to friction (iv) due to elastic shortening of concrete.
2287. The maximum permissible limit for iron in drinking water is:
0.1 mg/L
0.3-1 mg/L
2-2.5 mg/l.
5 mg/L
2288. The roof type suitable in plains where rainfall is meagre and temperature is high is:
Pitched and sloping roof
Flat roof
Shell roof
None of these
ব্যাখ্যা: A flat roof is a roof which is almost level in contrast to the many types of sloped roofs. The slope of a roof is properly known as its pitch and flat roofs have up to approximately 10 Flat roof is used to where rainfall is low and temperature is high.
2289. Penetration test on bitumen is used to determine its:
Grade
Viscosity
Ductility
All of these
ব্যাখ্যাঃ Bitumen penetration test is a basic test for determining the grades of bitumen. Penetration test is used for evaluating consistency of bitumen.
2290. The proportion of lime and sand in the mortar normally used in brick constructions are:
1:2
1:6
1:4
1:8
2291. Disinfection of water results in-
Removal of turbidity
Removal of hardness
Killing of disease bacteria
Removal of taste
ব্যাখ্যাঃ Water disinfection means the removal, deactivation or killing of pathogenic microorganisms.
2292. The ratio of specific weight of a liquid to the specific weight of pure water at a standard temperature is called-
Density of liquid
Specific gravity of liquid
Compressibility of liquid
Surface tension of liquid
ব্যাখ্যা The specific griaunity of an object is the ratio between the density of an object to a reference liquid. Usually our reference liquid in water, which has a density of Ig/ml.
2293. When a cohesionless soil attains quick condition, it looses:
Shear strength
Bearing capacity
Both (ক) and (খ)
Neither (ক) and (খ)
ব্যাখ্যাঃ Cohesionless soilds are defined as any free running type of soil such as sand, Gravel and stone. Cohesionless soil anains quick condition then it lose it's shear strengh and bearing capacity.
2294. The bending moment of cantilever beam shown below figure at 'A' is:
Zero
8 T-m
16 T-m
14 T-m
2295. In a pre-stressed member, it is advisable to use:
Low strength concrete only.
High strength concrete only.
Low strength concrete but high tensile steel.
High strength concrete and high tensile steel.
2296. The piece of a brick cut with its one corner equivalent to half the length and half the width of a full brick is known as:
Queen closer
Bevelled closer
King closer
Half-king closer
2297. Water content of soil can:
never be greater than 100%
be less than 50%
from 0 to 100%
be greater than 100%
2298. The moment at a hinge will be:
Infinity
Zero
Depends upon acting force
None of these
ব্যাখ্যাঃ The bending moment at ends of simpls supported and roller or hinge supported beam is taken zero,
2299. Dead load comprise of:
Permanently attached loads
Temporarily attached loads
Permanent as well as temporary loads
All the above
ব্যাখ্যা: Dead load comprise of permanently attached loads. Dead loads are the loads that will go no where in the structure and they are most important when designing slabs and beams. Dead load consists of own weight of the element and the weight of the floor finishing
2300. Which types of forces are generated during earthquake?
Vertical Shear
Horizontal Shear
Combination of both horizontal & vertical shear
Bending moment
ব্যাখ্যা: Earthquake force however possess several characteristic that make them unique in comparison with any other force such as gravity wind and thermal force. Earthquake force are the result of a back and forth, and up and down montior of the ground that supports a structure.