MCQ
61. The member of independent equations to be satisfied for static equilibrium of a plane structure is:
।
2
3
6
62. The proportion of lime and sand in the mortar normally used in brick constructions are:
1:2
1:6
1:4
1:8
63. The bending moment of cantilever beam shown below figure at 'A' is:
Zero
8 T-m
16 T-m
14 T-m
64. 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
65. The entrained air in concrete-
increase workability
decrease workability
decrease resistance to weathering
increase strength
66. The transverse reinforcements provided at right angles to the main reinforcements in a slab--
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.
Distributed load
Resist the temperature stress
Resist the shrinkage stress
All of the above
67. Machine foundation is subjected to:
Static loads
Wind loads
Dynamic loads
Static and dynamic loads
68. Loss Angeles testing machine is used to conduct:
ব্যাখ্যাঃ Resistance to abrasion of aggregate is deferemined in laboratory by loss angeles test machine.
Abrasion test
Attrition test
Crushing strength test
Impact test
69. Which types of forces are generated during earthquake?
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.
Vertical Shear
Horizontal Shear
Combination of both horizontal & vertical shear
Bending moment
70. The moment at a hinge will be:
ব্যাখ্যাঃ The bending moment at ends of simpls supported and roller or hinge supported beam is taken zero,
Infinity
Zero
Depends upon acting force
None of these
71. Standard BOD is measured at:
20°C-1 day
25°C-3 day
20°C-5 day
30°C-5 day
72. When a cohesionless soil attains quick condition, it looses:
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.
Shear strength
Bearing capacity
Both (ক) and (খ)
Neither (ক) and (খ)
73. After pre-stressing process is completed, loss of stress occurs due to-
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.
Shrinkage of concrete
Creep of concrete
Elastic shortening of concrete
All of the above
74. Plane and geodetic surveying are classification of surveying based on:
Methodology
Earth's curvature
Ojbect of survey
Instrument
75. The type of bond in a brick masonry containing altenate courses of stretcher and headres is called:
Flemish bond
English bond
Stretcher bond
Header bond
76. Disinfection of water results in-
ব্যাখ্যাঃ Water disinfection means the removal, deactivation or killing of pathogenic microorganisms.
Removal of turbidity
Removal of hardness
Killing of disease bacteria
Removal of taste
77. The roof type suitable in plains where rainfall is meagre and temperature is high is:
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.
Pitched and sloping roof
Flat roof
Shell roof
None of these
78. A soil consolidated under the existing over- burden pressure, is called:
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.
Pre-consolidated
Normally consolidated
Over-consolidated
None of these
79. Uniformity coefficieny of a soil is:
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.
equal to or greater than 1
equal to 1
equal to or less than 1
none of these
80. 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.