Question 461. The part of a derrick crane include(i) Mast(ii) Boom(iii) Bull wheel(iv) Jackwhich of these statements are correct?

Question 462. An earth moving equipment costs Rs. 5,00,000 and has an estimated life of 10 years and a salvage value of Rs. 50,000. What uniform annual amount must be set aside at the end of each of the 10 years for replacement if the interest rate is 8% per annum and if the sinking fund factor at 8% per annum interest rate for 10 years is 0.069?

Question 463. Consider the following statements:In the bar chart planning1. Interdependence of the operations cannot be portrayed.2. Progress of work can be measured.3. Spare time of the activities can be determined.4. Schedule cannot be updated.

Question 464. 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.

Question 465. Consider the following features/factors:1. Projects are of the non-repetitive type2. Time required need not be known3. Time required is known precisely4. Events have been established for planning5. Emphasis is given to activities of projectPERT is preferred for planning because of

Question 466. Rolling resistance of a wheel depends upon(i) Vehicle load(ii) Grade(iii) Ground conditions

Question 467. Consider the following operations:1. Drilling2. Blasting3. Mucking4. Placing steel5. Placing concreteThe correct sequence of these operations in tunnel construction is

Question 468. Consider the following statements:In the critical path method of construction planning, Free Float can be.1. Greater than Total Float.2. Greater than Independent Float3. Equal to Total Float.4. Less than Independent Float

Question 469. A contractor has two options;(l) : Invest his money in project A or (II) : Invest his money in project B. If he decides to invest in A, for every rupee invested, he is assured of doubling his money in ten years. If he decides to invest in B, he is assured of making his money 1.5 times in 5 years. If the contractor values his money at 10% interest rate, he

Question 470. 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