Blog

Which of the following bones are located in the hand? 

What is the proximal long bone of the leg? 

All of the following are functions of the skeletal system except which one? 

In many ecosystems, [BLANK-1] play a crucial role in pollination and seed dispersal.

Which of the following factors does not directly affect the compaction of soil?

A General Contractor is using a 25 CY articulated dump truck to haul excess excavated material from a construction site. The truck is powered by a 250 HP four-cycle naturally respirated engine, and the gear train efficiency is 0.82. The site elevation is 3,500 feet. When fully loaded, the truck has a gross weight of 45 tons, with 65% of the weight carried by the rear (driving) wheels. The haul road has an 8% uphill grade and a tire penetration of 1.8 inches. The coefficient of traction is 0.65. Determine if the equipment is capable of doing the job. Check max usable tractive force vs. required rimpull. Determine the adjusted available rimpull of the truck in each of the indicated gears. What will be the maximum speed for the truck? Gear Speed (mph) 1 3 2 9 3 14 4 23    

Which of the following earthmoving equipment is primarily used for digging trenches?

A Contractor is using a crawler CAT 824S dozer with straight blade. The dozer is operating on a loose stockpile material that weighs 2450 lb/BCY with a swell factor of 0.85 from bank to loose state. The dozer is pushing 6,000 LCY of soil for 150 ft downhill with an average 10% grade. The operator is of average skill. The operator uses a slot dozing technique to improve productivity. The operational efficiency is estimated to be 40-min hour. The figures below provide information about the dozer. What is the production in LCY/hr? How long does it take for the dozer to finish the job?

What type of loader is best suited for operating in soft or muddy conditions?

  Typically, the largest percentage category in the consumer price index (CPI) is