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Infosys Operating Systems AllOther Interview Questions
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Virtual memory size depends on [a] address lines [b] data bus [c] disc space [d] a & c [e] none

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Infosys Operating Systems AllOther Interview Questions

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Case Study: Deepak Hand tools Private Limited DHPL is a small sized firm manufacturing hand tools. It manufacturing plan is situated in Haryana. The company’s sales in the year ending on 31st March 2007 were Rs.1000 million (Rs.100 crore) on an asset base of Rs.650 million. The net profit of the company was Rs.76 million. The management of the company wants to improve profitability further. The required rate of return of the company is 14 percent. The company is currently considering an investment proposal. One is to expand its manufacturing capacity. The estimated cost of the new equipment is Rs.250 million. It is expected to have an economic life of 10 years. The accountant forecasts that net cash inflows would be Rs.45 million per annum for the first three years, Rs.68 million per annum from year four to year eight and for the remaining two years Rs.30million per annum. The plant can be sold for Rs.55 million at the end of its economic life. The company would need to raise debt to the extent of Rs.200 million. The company has the following options of borrowing Rs.200 million: a. The company can borrow funds from a nationalized bank at the interest rate of 14 percent for 10 years. It will be required to pay equal annual installment of interest and repayment of principal. b. A financial institution has offered to lend money to DHPL at 13.5 per annum but it needs to pay equated quarterly installment of interest and repayment of principal. Questions: 1. Should the company expand its capacity? Show the computation of NPV 2. What is the annual installment of bank loan? 3. Calculate the quarterly installments of the Financial Institution loan 4. Should the company borrow from the bank or from the financial institution?


A PLC is programmed to drive three motors A, B and C as follows : After running motor A for an hour, motor B should get ON and motor A should get OFF. And after running motor B for an hour, motor C should get ON and motor B should get OFF. And after running motor C for an hour, motor A should get ON and motor C should get OFF. (That is, a cyclic repetition with time period one hour) Now, the second condition is: If any motor gone faulty and is tripped, the consecutive motor should get ON and the faulty (tripped) motor should be eliminated from cyclic repetition. The remaining two motors should bear the cyclic repetition of one hour each. (For healthy motor take logic as high and for tripped motor take logic as low) Now, the third condition is: When motor A load(Amps) exceeds 60% of its rated load, motor B should get ON in parallel to motor A. And when both motors A & B are running in parallel, and if their load exceeds 60% of their rated load, motor C should also start in parallel to A & B. [Here the cyclic repetition is eliminated, until their loads become normal(40%)] [Take logic high(1) for load at 60% and logic low(0) for load at 40%] Now draw a flow chart or a ladder diagram to fulfill the above condition.


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