81. Los Angeles testing machine is used to conduct
a) abrasion test
b) impact test
c) attrition test
d) crushing strength test
Ans: a
82. In CBR test the value of CBR is calculated at
a) 2.5 mm penetration only
b) 5.0 mm penetration only
c) 7.5 mm penetration only
d) both 2.5mm and 5.0 mm penetrations
Ans: d
83. If aggregate impact value is 20 to 30 percent, then it is classified as
a) exceptionally strong
b) strong
c) satisfactory for road surfacing
d) unsuitable for road surfacing
Ans: c
84. The maximum allowable Los Angeles abrasion value for high quality surface course is
a) 10%
b) 20 %
c) 30%
d) 45 %
Ans: c
85. Percentage of free carbon in bitumen is
a) more than that in tar
b) less than that in tar
c) equal to that in tar
d) none of the above
Ans: b
86. The ductility value of bitumen for suitability in road construction should not be less than
a) 30 cm
b) 40 cm
c) 50 cm
d) 60 cm
Ans: c
87. The maximum limit of water absorption for aggregate suitable for road construction is
a) 0.4 %
b) 0.6%
c) 0.8 %
d) 1.0 %
Ans: b
88. Which of the following represents hardest grade of bitumen ?
a) 30/40
b) 60/70
c) 80/100
d) 100/120
Ans: a
89. Penetration test on bitumen is used for determining its
a) grade
b) viscosity
c) ductility
d) temperature susceptibility
Ans: a
90. Bitumen of grade 80/100 means
a) its penetration value is 8 mm
b) its penetration value is 10 mm
c) its penetration value is 8 to 10 mm
d) its penetration value is 8 to 10 cm
Ans: c
Read More Questions:
Highway Engineering Mcqs Part1
Highway Engineering Mcqs Part2
a) abrasion test
b) impact test
c) attrition test
d) crushing strength test
Ans: a
82. In CBR test the value of CBR is calculated at
a) 2.5 mm penetration only
b) 5.0 mm penetration only
c) 7.5 mm penetration only
d) both 2.5mm and 5.0 mm penetrations
Ans: d
83. If aggregate impact value is 20 to 30 percent, then it is classified as
a) exceptionally strong
b) strong
c) satisfactory for road surfacing
d) unsuitable for road surfacing
Ans: c
84. The maximum allowable Los Angeles abrasion value for high quality surface course is
a) 10%
b) 20 %
c) 30%
d) 45 %
Ans: c
85. Percentage of free carbon in bitumen is
a) more than that in tar
b) less than that in tar
c) equal to that in tar
d) none of the above
Ans: b
86. The ductility value of bitumen for suitability in road construction should not be less than
a) 30 cm
b) 40 cm
c) 50 cm
d) 60 cm
Ans: c
87. The maximum limit of water absorption for aggregate suitable for road construction is
a) 0.4 %
b) 0.6%
c) 0.8 %
d) 1.0 %
Ans: b
88. Which of the following represents hardest grade of bitumen ?
a) 30/40
b) 60/70
c) 80/100
d) 100/120
Ans: a
89. Penetration test on bitumen is used for determining its
a) grade
b) viscosity
c) ductility
d) temperature susceptibility
Ans: a
90. Bitumen of grade 80/100 means
a) its penetration value is 8 mm
b) its penetration value is 10 mm
c) its penetration value is 8 to 10 mm
d) its penetration value is 8 to 10 cm
Ans: c
Read More Questions:
Highway Engineering Mcqs Part1
Highway Engineering Mcqs Part2
No comments:
Post a Comment