51. For a given size of bucket, the ideal output of a dragline will be least in
a) Moist loam
b) Sand and gravel
c) Good common earth
d) Wet sticky clay
Ans: d
52. Consider the following statements for a power shovel:
(i) Output can be increased by reducing the angle of swing for a given depth of cut.
(ii) For a given angle of swing, output will be maximum at optimum depth of cut.
(iii) Output can be increased by keeping the depth of cut less than optimum depth,
(iv) Output can be increased by increasing the size of shovel. Of these statements
a) (ii), (iii) and (iv) are correct
b) (i), (ii) and (iv) are correct
c) (i), (iii) and (iv) are correct
d) (i) and (iv) are correct
Ans: b
53. Assertion A: For a given depth of cut, the output of a power shovel can be increased by decreasing the angle of swing.
Reason R: If the angle of swing is decreased, the cycle time will be decreased.
Select the correct answer.
a) Both A and R are true and R is the correct explanation of A.
b) Both A and R are true but R is not the correct explanation of A.
c) A is true but R is false.
d) A is false but R is true.
Ans: a
54. If the output of a dragline for 90° angle of swing at optimum depth of cut is X, then the output for 120° angle of swing at 120 % of optimum depth of cut will be
a) equal to X
b) more than X
c) less than X
d) any of the above
Ans: c
55. Output of a bulldozer is
(i) increased if drawbar HP of the tractor is increased for a given hauling distance
(ii) decreased if drawbar HP of the tractor is increased for a given hauling distance
(iii) increased if the hauling distance is increased for a given drawbar HP of the tractor
(iv) decreased if the hauling distance is increased for a given drawbar HP of the tractor Of these statement
a) (i) and (iii) are correct
b) (i) and (iv) are correct
c) (ii) and (iii) are correct
d) (ii) and (iv) are correct
Ans: b
56. A machine is purchased for Rs. 10,000,00/- and has an estimated life of 10 years. The salvage value at the end of 10 years is Rs. 1,50,000/-. The book value of the machine at the end of 5 years using general straight line method of evaluation of depreciation is
a) Rs. 4,75,000/-
b) Rs. 5,75,000/-
c) Rs. 6,50,000/-
d) Rs. 8,50,000/-
Ans: b
57. An excavator costs Rs. 20,00,000/- and has an estimated life of 8 years. It has no salvage value at the end of 8 years. The book value of the excavator at the end of 3 years using general double declining balance method is
a) Rs. 8,43,750/-
b) Rs. 8,75,000/-
c) Rs. 10,50,000/-
d) Rs. 11,56,250/-
Ans: a
58. If the excavation of earth is done manually then it costs Rs. 10 per cum. A machine can excavate at a fixed cost of Rs. 4000 plus a variable cost of Rs. 2 per cum. The quantity of earth for which the cost of excavation by machine will be equal to the cost of manual excavation is
a) 500 cum
b) 1000 cum
c) 1500 cum
d) 2000 cum
Ans: a
59. Which one of the following surfaces will give highest coefficient of traction while using crawler track tractors?
a) Ice
b) Concrete
c) Loose sand
d) Earth
Ans: d
60. Rolling resistance of a wheel depends upon
(i) Vehicle load
(ii) Grade
(iii) Ground conditions Of these statements
a) only (i) is correct
b) (i) and (ii) are correct
c) (i) and (iii) are correct
d) (ii) and (iii) are correct
Ans: c
Read More Questions:
Construction Planning and Management MCQs Part1
Construction Planning and Management MCQs Part2
a) Moist loam
b) Sand and gravel
c) Good common earth
d) Wet sticky clay
Ans: d
52. Consider the following statements for a power shovel:
(i) Output can be increased by reducing the angle of swing for a given depth of cut.
(ii) For a given angle of swing, output will be maximum at optimum depth of cut.
(iii) Output can be increased by keeping the depth of cut less than optimum depth,
(iv) Output can be increased by increasing the size of shovel. Of these statements
a) (ii), (iii) and (iv) are correct
b) (i), (ii) and (iv) are correct
c) (i), (iii) and (iv) are correct
d) (i) and (iv) are correct
Ans: b
53. Assertion A: For a given depth of cut, the output of a power shovel can be increased by decreasing the angle of swing.
Reason R: If the angle of swing is decreased, the cycle time will be decreased.
Select the correct answer.
a) Both A and R are true and R is the correct explanation of A.
b) Both A and R are true but R is not the correct explanation of A.
c) A is true but R is false.
d) A is false but R is true.
Ans: a
54. If the output of a dragline for 90° angle of swing at optimum depth of cut is X, then the output for 120° angle of swing at 120 % of optimum depth of cut will be
a) equal to X
b) more than X
c) less than X
d) any of the above
Ans: c
55. Output of a bulldozer is
(i) increased if drawbar HP of the tractor is increased for a given hauling distance
(ii) decreased if drawbar HP of the tractor is increased for a given hauling distance
(iii) increased if the hauling distance is increased for a given drawbar HP of the tractor
(iv) decreased if the hauling distance is increased for a given drawbar HP of the tractor Of these statement
a) (i) and (iii) are correct
b) (i) and (iv) are correct
c) (ii) and (iii) are correct
d) (ii) and (iv) are correct
Ans: b
56. A machine is purchased for Rs. 10,000,00/- and has an estimated life of 10 years. The salvage value at the end of 10 years is Rs. 1,50,000/-. The book value of the machine at the end of 5 years using general straight line method of evaluation of depreciation is
a) Rs. 4,75,000/-
b) Rs. 5,75,000/-
c) Rs. 6,50,000/-
d) Rs. 8,50,000/-
Ans: b
57. An excavator costs Rs. 20,00,000/- and has an estimated life of 8 years. It has no salvage value at the end of 8 years. The book value of the excavator at the end of 3 years using general double declining balance method is
a) Rs. 8,43,750/-
b) Rs. 8,75,000/-
c) Rs. 10,50,000/-
d) Rs. 11,56,250/-
Ans: a
58. If the excavation of earth is done manually then it costs Rs. 10 per cum. A machine can excavate at a fixed cost of Rs. 4000 plus a variable cost of Rs. 2 per cum. The quantity of earth for which the cost of excavation by machine will be equal to the cost of manual excavation is
a) 500 cum
b) 1000 cum
c) 1500 cum
d) 2000 cum
Ans: a
59. Which one of the following surfaces will give highest coefficient of traction while using crawler track tractors?
a) Ice
b) Concrete
c) Loose sand
d) Earth
Ans: d
60. Rolling resistance of a wheel depends upon
(i) Vehicle load
(ii) Grade
(iii) Ground conditions Of these statements
a) only (i) is correct
b) (i) and (ii) are correct
c) (i) and (iii) are correct
d) (ii) and (iii) are correct
Ans: c
Read More Questions:
Construction Planning and Management MCQs Part1
Construction Planning and Management MCQs Part2
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