Which one of the following surfaces will give highest coefficient of traction while using crawler track tractors?

Related Mcqs:

1. Wheeled tractors are replacing crawler tractors because________________?

   Consider the following statements?

   1. wheeled tractors travel faster
   2. crawler tractors are more expensive
   3. track parts of a crawler wear out quickly
   4. crawler tractors have stick control

   A. 1,3 and 4 are correct
   B. 2, 3 and 4 are correct
   C. 1,2 and 3 are correct
   D. 1, 2 and 4 are correct

2. Which of the following surfaces will give highest rolling resistance for a rubber tyred vehicle?

   A. Concrete
   B. Loose sand
   C. Asphalt
   D. Firm earth

3. A wheeled tractor hauling unit is working on firm earth. The total loaded weight distribution of this unit is: Drive wheels : 25000 kg Scraper wheels : 10000 kg If the coefficient of traction for wheeled tractor on firm earth is 0.5, the rimpull which this tractor can exert without slipping is_______________?

   A. 10000 kg
   B. 12500 kg
   C. 22500 kg
   D. 5000 kg

4. The rated loads of lifting cranes, as percentage of tipping load at specified radius, for crawler-mounted, and pneumatic tyremounted machines would be respectively_________________?

   A. 80 and 90
   B. 90 and 80
   C. 85 and 75
   D. 75 and 83

5. What estimate would you give for the variance in above problem ?

   A. 81
   B. 54
   C. 36
   D. 9

6. Which of the following is a weakness of bar chart ?

   A. interdependencies of activities
   B. project progress
   C. uncertainties
   D. all of the above

7. Which of the following is not a PERT event ?

   A. site investigation started
   B. sessional work completed
   C. bus starts from Jaipur
   D. class is being attended

8. Which of the following excavators is most suitable for digging under water?

   A. Drag line
   B. Hoe
   C. Clam shell
   D. Dipper shovel

9. 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
   select the correct 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

10. Which one of the following is not an excavating and moving type of equipment ?

    A. Bulldozer
    B. Clam shell
    C. Scraper
    D. Dump truck