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__________________?

Related Mcqs:

1. 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 rolling resistance of 40 kg per tonne, then the drawbar pull of the tractor will________________?

   A. reduce by 200 kg
   B. increase by 200 kg
   C. increase by 250 kg
   D. reduce by 250 kg

2. A four wheel trac*or whose operating weight is 12000 kg is pulled along a road having a rising slope of 2% at a uniform speed. Assume grade resistance factor = 10 kg/tonne. The tension in the tow cable is 720 kg. The rolling resistance of the road will be___________________?

   A. 20 kg/tonne
   B. 30 kg/tonne
   C. 40 kg/tonne
   D. 50 kg/tonne

3. The maximum rimpull in the first gear of a tractor while towing a load is 6300 kg. The tractor weighs 12.5 tonnes and is operating along a 2 percent upgrade and the rolling resistance is 45 kg/tonne. Pull available for towing the load is________________?

   A. 3425 kg
   B. 5515 kg
   C. 4350 kg
   D. 2975 kg

4. 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

5. 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 correct
   C. (i) and (iii) are correct
   D. (ii) and (iii) are correct

6. 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 ?

   A. Rs. 31050
   B. Rs. 34500
   C. Rs. 37950
   D. Rs. 50000

7. The grade resistance factor for an earth moving machine can be obtained by multiplying grade percentage by a factor approximately equal to_________________?

   A. 2 kg/tonne
   B. 6 kg/tonne
   C. 9 kg/tonne
   D. 20 kg/tonne

8. The basic action involved in sheep foot rolling is_______________?

   A. Kneading
   B. Pressing
   C. Tamping
   D. Vibration

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

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

10. Which of the following earth moving machines has the shortest cycle time?

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