Calculate the unit cycle time for a 190 t mining truck loaded by an excavator with a nominal bucket volume of 30m requiring 4 passes with the following operational time- duration data: Excavator loading time = 36 seconds per loading pass Truck travelling time = 351 seconds per truck Truck dumping time = 22 seconds per truck Unloaded truck Travelling back time = 181 seconds per truck Truck queuing or waiting time = 75 seconds/truck Excavator-truck spotting time = 14 seconds/truck

Calculate the unit cycle time for a 190 t mining truck loaded by an excavator with a nominal bucket volume of 30m requiring 4 passes with the following operational time- duration data: Excavator loading time = 36 seconds per loading pass Truck travelling time = 351 seconds per truck Truck dumping time = 22 seconds per truck Unloaded truck Travelling back time = 181 seconds per truck Truck queuing or waiting time = 75 seconds/truck Excavator-truck spotting time = 14 seconds/truck

Principles of Heat Transfer (Activate Learning with these NEW titles from Engineering!)

8th Edition

ISBN:9781305387102

Author:Kreith, Frank; Manglik, Raj M.

Publisher:Kreith, Frank; Manglik, Raj M.

Chapter4: Numerical Analysis Of Heat Conduction

Section: Chapter Questions

Problem 4.4P

See similar textbooks

Similar questions

A single model manual assembly line produces a product whose work content time = 48.9 min. The line has 24 workstations with a manning level M = 1.25. The product has a Available shift time per day = 8 hr, but downtime during the shift reduces actual production time to 7.6 hr on average. This results in an average daily production of 256 units/day. Repositioning time per worker Tr is 8% of cycle time Tc. Determine: Line efficiency, Balancing efficiency, and Repositioning time Tr.
Mechanism and Kinematic Terminology Give three example of a machine for: generating powert, transmitting energy, and utilizing mechanical energy in the performance of useful work.
Please dont copy from other sources..... What are the requirement (objectives) of a control system? And effects of increasing Integral (minutes / repeat) on them.
Please give me answer in 45 min. Calculate the minimum technical specifications of a linear pneumatic cylinder that meets the requirements of raising the transfer mechanism in 3 seconds and lowering in 2 seconds.Specifically, the distance to travel (stroke) and diameters.
Problem 3: A Cavo loader has a hopper volume of 1 m3. The loader works for 2 shifts (8 hr/shift) with 1 hour break between the 2 shifts. The loader has to transport the muck to a distance of 25 m away from the face. Calculate the following: Calculate the total output for each shift. If the transporting distance increased to 75 m. How much is the reduction in the output rate. If a different Cavo loader with a hopper volume of 2.2 m3. How much is the increase in the output rate per shift.
The analyst in the Dorben Company wishes to assign a number of like facilities to an operator based on minimizing the cost per unit of output. A detailed study of the facilities revealed the following: Loading machine standard time = 0.30 minutes Unloading machine standard time = 0.25 minutes Walk time between two machines = 0.09 minutes Operator rate = $12.00 per hour Machine rate (both idle and working) = $18.00 per hour Machine cycle time = 1.55 minutes TEC = The Expected Cost a) With your initial estimation, how many machines can be serviced exactly?(please keep a non-integer with three decimal places) b) How much is your TEC per piece if the operator has idle time? (please keep three decimal places) c)How much is your TEC per piece if the machine has idle time? (please keep three decimal places) d) How many of these machines should be assigned to each operator?(please write down a numerical number)
By using a flat friction clutch, at 730 rpm with 30kW power a rotating electric motor will drive a work machine. Electric motor and work machine mass moments of inertia are 2.5 kgm2 and 10 kgm2, respectively. Work machine with a resistance of 380 Nm It has (load) moment. While the engine is rotating at 730 rpm, the work machine is loaded in 10 seconds Is this electric motor sufficient since it is requested to be activated? If not enough, become enough how do you get it?
A car repair shop has 3 stages of process serially to performcare of its customers' cars. Process 1 with Reliability R1 of 0.91 performedby Staff A, Process 2 with Reliability R2 of 0.92 and Process 3 withReliability R3 of 0.96 a. Sketch from the process above b. Calculate the System Reliability Rs of the systemc. If the workshop has a System Reliability standard of 0.88, whether thethe workshop is able to meet these standards? Explain your answerd. The workshop manager decided to make redundancy by adding staffprocess 1 with Reliability R1.1 of 0.92 and Process 2 with ReliabilityR2.1 is 0.93. Sketch from the process above e. What is System Reliability now? Is able to meet System standardsReliability workshop? Explain your answer
a) Consider an AS/RS machine in an aisle that is 280 ft long and 70 ft high. The I/O point is in the lower left corner, and the S/R machine travels at 300 ft/min horizontally and 100 ft/min vertically. The time required to pick up or drop off a load is 0.8 minutes. Assuming a single command operation, find the total cycle time in minutes and the throughput in operations per hour. b) Complete part a, assuming dual command operation.
A 30-station transfer line has an ideal cycle time of 0.75 min, an average downtime of 6.0 min per line stop occurrence, and a station failure frequency of 0.01 for all stations. A proposal has been submitted to locate a storage buffer between stations 15 and 16 to improve line efficiency. (a) Determine the current line efficiency and production rate (b)Determine the maximum possible line efficiency and production rate that would result from the new proposal. (c)Consider a new proposal to divide the line into three stages: two storage buffers located between stations 10 and 11, and between stations 20 and 21, respectively. Answer Part (b) for this proposal. (d) Now consider the original proposal. Assume that the capacity of the proposed storage buffer is to be 20 parts, and the downtime (Td = 6.0 min) is a constant. Answer Part (b) for this proposal.
An AS/RS is used for work-in-process storage in a manufacturing facility. The AS/RS has five aisles, each aisle being 120 ft long and 40 ft high. The horizontal and vertical speeds of the S/R machine are 400 ft/min and 50 ft/min, respectively. The S/R machine requires 12 sec to accomplish a pick-and-deposit operation. The number of single-command cycles equals the number of dual-command cycles. If the requirement is that the AS/RS must have a throughput rate of 200 S/R transactions/hr during periods of peak activity, will the AS/RS satisfy this requirement? If so, what is the utilization of the AS/RS during peak hours?
pplz provide answer for q1 part e for upvote asap velocity is in km/h not in m/s