If the gross vehicle weight of a truck is 30 t and rolling resistance is 30 kg/tonne, then the tractive effort required to keep the truck moving at a uniform speed is__________________? A. 30 kg B. 300 kgC. 900 kg…
Rolling resistance of a wheel depends upon_____________? (i) Vehicle load (ii) Grade (iii) Ground select the correct statements? A. only (i) is correct B. (i) and (ii) are correctC. (i) and (iii) are correct D. (ii) and (iii) are correct
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…
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…
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…
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…
For which of the following materials, the output of power shovels for a fixed shovel size will be maximum_______________? A. Moist loam B. Good common earth C. We|l blasted rock D. Wet sticky clay
Which of the following excavators is most suitable for digging under water? A. Drag line B. Hoe C. Clam shell D. Dipper shovel
A tractor whose weight is 20 tonnes has a drawbar pull of 2500 kg, when operated on a level road having a rolling resistence of 30 kg per tonne. If this tractor is operated on a level road having a…
Interfering float is the difference between__________________? A. total float and free float B. total float and independent float C. free float and independent float D. none of the above