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Questions and Answers
What is the unit weight of the crushed stone in lb/cf?
What is the unit weight of the crushed stone in lb/cf?
- 95 lb/cf
- 120 lb/cf
- 110 lb/cf
- 102 lb/cf (correct)
What is the permissible efficiency of the screen?
What is the permissible efficiency of the screen?
- 85%
- 80%
- 95%
- 90% (correct)
What is the width of the screening unit in feet?
What is the width of the screening unit in feet?
- 4.5 ft
- 3 ft
- 3.5 ft (correct)
- 4 ft
What is the closed setting of the jaw crusher in inches?
What is the closed setting of the jaw crusher in inches?
What is the size range of the crushed stone output from the jaw crusher?
What is the size range of the crushed stone output from the jaw crusher?
How many decks will the horizontal vibrating screen have?
How many decks will the horizontal vibrating screen have?
What is the weight of the crushed stone in lb/cf according to the second part of the text?
What is the weight of the crushed stone in lb/cf according to the second part of the text?
What is the name of the association that provides support in operating productivity improvements, engineering research, safety and health, environmental concerns, and technical issues?
What is the name of the association that provides support in operating productivity improvements, engineering research, safety and health, environmental concerns, and technical issues?
What factor does not directly influence the capacity of a crusher?
What factor does not directly influence the capacity of a crusher?
Which process involves separating materials based on particle size ranges?
Which process involves separating materials based on particle size ranges?
What equipment is used to load the stone that is to be crushed?
What equipment is used to load the stone that is to be crushed?
What is the primary function of washing in aggregate production?
What is the primary function of washing in aggregate production?
Which component of a jaw crusher is movable?
Which component of a jaw crusher is movable?
What is the purpose of matching the capacity of the shovel or loader to the crushing plant?
What is the purpose of matching the capacity of the shovel or loader to the crushing plant?
In aggregate production, what chapter primarily discusses transport?
In aggregate production, what chapter primarily discusses transport?
Which process follows after the stone is crushed and screened?
Which process follows after the stone is crushed and screened?
What is the recommended factor of safety for selecting a screen with calculated capacity greater than the required capacity?
What is the recommended factor of safety for selecting a screen with calculated capacity greater than the required capacity?
What is the minimum screen size recommended for screening 120 tph of dry crushed stone?
What is the minimum screen size recommended for screening 120 tph of dry crushed stone?
What is the weight per cubic foot of the dry crushed stone being screened?
What is the weight per cubic foot of the dry crushed stone being screened?
What percentage of the aggregate is smaller than the in.in size?
What percentage of the aggregate is smaller than the in.in size?
What type of machine is a screw-type classifier used for?
What type of machine is a screw-type classifier used for?
Where is the motor located in the single screw classifier shown in Figure 13.22?
Where is the motor located in the single screw classifier shown in Figure 13.22?
What activates the discharge valve in sand classifiers to enable material flow into the splitter box?
What activates the discharge valve in sand classifiers to enable material flow into the splitter box?
In sand classifiers, which size sand particles settle last in the tank?
In sand classifiers, which size sand particles settle last in the tank?
What is the maximum output of the roll crusher in tons per hour for material less than 1 inch?
What is the maximum output of the roll crusher in tons per hour for material less than 1 inch?
If 12% of the stone from the quarry is smaller than 1 inch and removed before sending it to the jaw crusher, how does this affect the process?
If 12% of the stone from the quarry is smaller than 1 inch and removed before sending it to the jaw crusher, how does this affect the process?
What is the correct screen efficiency to use when determining the minimum-size screen required to handle the crusher output with a permissible efficiency of 85%?
What is the correct screen efficiency to use when determining the minimum-size screen required to handle the crusher output with a permissible efficiency of 85%?
For the output of a 47- by 34-inch crusher and an opening of 3 inches, what is the minimum size screen required to handle this output?
For the output of a 47- by 34-inch crusher and an opening of 3 inches, what is the minimum size screen required to handle this output?
What is the average number of fatalities per year in the mining industry?
What is the average number of fatalities per year in the mining industry?
What is the permissible efficiency when using a 90% efficient vibrating screen for the output from a 40- by 30-in. jaw crusher?
What is the permissible efficiency when using a 90% efficient vibrating screen for the output from a 40- by 30-in. jaw crusher?
Considering the 40- by 30-inch jaw crusher details, what is the unit weight of crushed stone?
Considering the 40- by 30-inch jaw crusher details, what is the unit weight of crushed stone?
What is one of the primary causes of mining fatalities?
What is one of the primary causes of mining fatalities?
Why is it crucial not to remove guards, covers, or shields when the equipment is running?
Why is it crucial not to remove guards, covers, or shields when the equipment is running?
Given a screen width of 4 feet, how should the length of the screen be chosen for integer dimensions?
Given a screen width of 4 feet, how should the length of the screen be chosen for integer dimensions?
Which administration regulates the safe operation of aggregate production plants in the U.S.?
Which administration regulates the safe operation of aggregate production plants in the U.S.?
What is the percentage requirement for the aggregate to pass through a 1.5 in. screen according to the specifications?
What is the percentage requirement for the aggregate to pass through a 1.5 in. screen according to the specifications?
What should always be done before performing maintenance to prevent unexpected motion?
What should always be done before performing maintenance to prevent unexpected motion?
Which document details the safety risks of removing protective covers and guards from rock processing equipment?
Which document details the safety risks of removing protective covers and guards from rock processing equipment?
Why is it essential to wear hard hats in aggregate production facilities?
Why is it essential to wear hard hats in aggregate production facilities?
What should be done before beginning the operation of any crushing equipment or conveyor?
What should be done before beginning the operation of any crushing equipment or conveyor?
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