Reference no: EM13753083
Problem 1 The guidance system of a ship is controlled by a computer that has three major modules. In order for the computer to function properly, all three modules must function. Two of the modules have reliabilities of .91, and the other has a reliability of .96.
a. What is the reliability of the computer?
b. A backup computer identical to the one being used will be installed to improve overall reliability. Assuming the new computer automatically functions if the main one fails, determine the resulting reliability.
c. If the backup computer must be activated by a switch in the event that the first computer fails, and the switch has a reliability of .97, what is the overall reliability of the system? (Both the switch and the backup computer must function in order for the backup to take over.)
Problem 2 Determine the availability for each of these cases:
a. MTBF = 45 days, average repair time = 4 days.
b. MTBF = 340 hours, average repair time = 6 hours.
Problem 3 A manager must decide between two machines. The manager will take into account each machine's operating costs and initial costs, and its breakdown and repair times. Machine A has a projected average operating time of 130 hours and a projected average repair time of 10 hours. Projected times for machine B are an average operating time of 54 hours and a repair time of 3 hours. What are the projected availabilities of each machine?
|
Increase their chance of success at trident
: Which of Professor Scott's students is most likely to succeed ? Pick one of Professor Scott's students and offer a strategy or solution that could increase their chance of success at Trident
|
|
Subtracting in the statement of cash flows
: If an analysis of the general ledger accounts indicates that equipment, which had cost $168,000 and on which accumulated depreciation totalled $135,000 on the October 1st was sold for $20,000. During 2009 the depreciation on the equipment was $30,000..
|
|
Analysis of general ledger accounts indicates that equipment
: An analysis of the general ledger accounts indicates that equipment, which had cost $50,000 and on which accumulated depreciation totalled $46,000 on the date of sale, was sold for $6,000 during the year. Show the dollar amount and the type of activi..
|
|
Use linq to sort the list in ascending order
: Write a console app that inserts 30 random letters into a List . Perform the following queries on the List and display your results: Use LINQ to sort the List in ascending order
|
|
What is the reliability of the computer
: The guidance system of a ship is controlled by a computer that has three major modules. In order for the computer to function properly, all three modules must function. Two of the modules have reliabilities of .91, and the other has a reliability ..
|
|
Statement of cash flows prepared by the indirect method
: The net income reported on the income statement for the current year was $200,000. Depreciation recorded on plant assets and amortization of patents for the year were $30,000 and $8,000 respectively. Balances of current asset and current liability ac..
|
|
What rate of interest is being paid on the loan
: What would you pay for a $130,500 debenture bond that matures in 15 years and pays $13,050 a year in interest if you wanted to earn a yield of: Assuming annual compounding of interest, what rate of interest is being paid on the loan?
|
|
Employment-related expenses
: Mike incurs the following employment-related expenses in the current year: Mike's AGI is $120,000 before any of the above expenses are deducted. None of the expenses listed were reimbursed by Mike's employer. Mike has no other miscellaneous itemized ..
|
|
Write an executive summary identifying appropriate design
: Write an executive summary identifying appropriate design approaches for a selected product and service. Pick one service with which you are familiar. Complete three to five line items such as production line, self-service, or personal attention ..
|