maintenance question

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ec 31, 2011 By admin inMECHANICAL QB

Maintenance Engineering IMPORTANT QUESTIONS,QUESTION BANK

ME2019 MAINTENANCE ENGINEERING

UNIT- IPRINCIPLES AND PRACTICES OF MAINTENANCE PLANNING

PART-A (2 Marks)

01. Define maintenance.02. Define reliability.03. State the benefits of reliability analysis in industries.04. Define failure rate.05. What is Mean Failure Rate?T06. Define Mean Time to Failure.07. What is Mean Time Between Failures (MTBF)?08. Define Mean Time to Repair (MTTR).09. Define Maintenance Action Rate.10. Define Failure Density.

PART-B (16 Marks)

1. What do you mean by maintenance job planning? Discuss varioussteps ofmaintenance job planning. (16)

2. What is long term plan? Discuss few long term planning? .(16)3. What are the objectives of maintenance organization and whatdifferent types oforganizations are in use in Indian industries? . (16)4. What is equipment availability and what are the three basicapproaches to define andquantity availability. . (16)5. Explain MTBS, MTBF, MTTF, MTTR and failure rate? . (16)6. Explain briefly different types and classes of maintenancecost. (16)

UNIT-IIMAINTENANCE POLICIES PREVENTIVE MAINTENANCE

PART-A

01. What is meant by Breakdown maintenance approach?02. Classify various planned maintenance approach.03. Define Corrective maintenance approach.
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04. What is meant by preventive maintenance approach?05. List out the objectives of Corrective maintenance.06. What is meant by Predictive Maintenance?07. List out some condition based monitoring techniques andbriefly discuss on them.08. What is meant by Reliability Centered Maintenance (RCM)?09. What is Total Productive Maintenance (TPM) and discuss itssimilarities with TQM?10. What is, meant by Reliability Centered Maintenance (RCM)?11. What does Safety, Health and Environment pillar of TPM aimsat?

PART-B (16 Marks)

1. What do you understand by maintenance categories? Explaincommon types and explainthe basis of their selection. .(16)2. What are all the steps involved in preventive maintenance whypreventive maintenance isbetter than reactive maintenance. . (16)3. Distinguish between fixed time maintenance and connect basedmaintenance. Give themerits and demerits. . (16)4. Briefly explain the procedure for TPM. .(16)5. Explain the repair cycle of metallic materials. . (16)6. What are the functions of lubrication and gives the tips onlubrication. (16)

UNIT-III

CONDITION MONOTORINGPART-A

1. What is equipment health monitoring?2. List down the factors for increasing the demand conditionmonitoring.3. List down the key features of condition monitoring.4. Write down the basic steps in condition monitoring.5. What are three types of condition monitoring?

6. State the advantages and disadvantages of conditionmonitoring.7. Mention the various costs involved in costing of conditionmonitoring mainly.8. State the methods of measuring vibration.9. Describe briefly pistol thermometer.10. Name the types of pyrometers.11. Mention title applications of bimetallic strip.


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12. List down the features of RTD.13. State the applications and limitations of thermisters.

PART-B (16 Marks)

1. What is condition monitoring and explain condition monitoringWhat type of conditionmonitoring are normally used in industry. (16)2. What is leakage monitoring? Explain some of the leakagemediums used for conditionmonitoring. (16)

3. What is wear debris analysis what are the three wear debrisanalysis techniques commonlyused and compare their performance and uses? . (16)4. Briefly explain the cost comparison with and withoutcondition monitoring. (16)5. What is thermal monitoring and what thermal monitoring areused in industries Explainprinciple and uses of thermograph .(16)6. Briefly explain various methods and instruments for conditionmonitoring. (16)

UNIT-IVREPAIR METHODS FOR BASIC MACHINE ELEMENT

PART-A

01. What are called Age- Dependent Failures?

02. What are Unpredictable Failures? .t03. What are Running-In-Failures?04. Define Fault tree diagrams.05. What are the benefits of Fault Tree Diagram?06. Differentiate between Fault tree diagrams and ReliabilityBlock Diagrams.07. Write down the capabilities of Fault Tree Diagram.08. Define Event Tree Analysis (ETA).09. What is the aim of Event .Tree Analysis (ETA)?10. Define Root Cause Analysis (RCA.)PART-B (16 Marks)

1. Briefly explain the repair methods of machine beds. . (16)2. Explain the repair method of worn-out bearing. . (16)3. Explain the repair methods of slide ways and spindle. . (16)4. Briefly explain the procedure for the repair cycle of gearsand lead screw. .(16)5. What is failure analysis? Explain their development. .(16)6. Explain the logical fault location methods. . (16)


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UNIT-VREPARE METHODS FOR MATERIAL HANDLING EQUIPMENTS

PART-A

1. State few examples of material handling equipments.2. State the benefits of proper maintenance of material handlingequipments.3. State the major stages in preventive maintenance of materialhandling equipments.4. State the various phases present in a good maintenancemanagement system.5. Define the term Computerized Maintenance Management System(CMMS).6. State the objectives of CMMS.7. State the advantages of CMMS.8. Define work order systems.9. Mention the use of work order backlog.

10. What is work permit?11. What is job card?12. State titer benefits of job card system.13. State the role of equipment records in maintenance.

PART-B (16 Marks)

1. Explain repair methods of conveyors. . (16)2. Explain the repair methods for crane and hydraulic lift. .(16)3. Briefly explain the equipment record. . (16)

4. Explain job order system. (16)5. Explain various hydraulic and pneumatic equipment used inmaterial handling purpose.How to maintain it. . (16)6. Explain the maintenance procedure for various small equipmentfor material handlingpurpose like chain block, chain, rope, trolley and R.G.B. (16)

Dec 31, 2011 By admin inMECHANICAL QB

MA2451 ENGINEERING ECONOMICS AND COST ANALYSIS

UNITI - INTRODUCTION TO ECONOMICS
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PART A (2MARKS)

1. Define Economics?

2. Write any four goals of economy?

3. Explain law of supply and demand?

4. Write about factors in fluency demand?5. Write about factors in fluency supply?6. Define Economic efficiency?7. Define engineering economics?8. Define marginal cost?9. Define marginal revenue?10. Define sunk cost?11. Define break even analysis?12. Define P/V ratio?13. Define processes planning?

PART B

1. Explain in detail about flow in an economy? (16)2. Explain the concept of law of supply and demand with suitableexample? (16)3. Briefly explain about element of cost and its classification?(16)4. Explain the concept of break even analysis with cleardiagram? (16)

5. Briefly explain about process planning and its various types?(16)6. (a) (i)Bring out the scope of engineering economics withappropriate examples (8)(ii) A concern manufacturing a domestic appliance proposes toput up an improved model in market and theselling price for the same to be decided .The selling price willcover the overheads and ensure the proportion ofprofit on sales as before.The material in the new model willcost Rs 4000 and the direct wages would be Rs2000.Following figures relate to the previous year:

Stock material on 1st April 2006 Rs 2,00,000 (8)Stock material on 31 stMarch 2007 Rs 2,20,000Purchase of raw material in this period Rs 5,20,000Manufacturing wages Rs 1,60,000Works overhead Rs 80,000Administrative and sales overhead Rs 80,000Sales during the year Rs 9,02,000Suggest a selling price .Overhead absorption base on % of direct


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labour.7. (i) Explain the process of material selection in new productdevelopment (8)(ii) From the following details ,calculate the break even point.What will be the selling price per unit if breakeven point to be brought to 900 units:Variable cost per units Rs 750 (8)Fixed expenses Rs 27,00,000Selling price per unit Rs 1,000

UNITII VALUE ENGINEERINGPART A (2 MARKS)

1.What are the approaches available for make or buy decision?2. Define value engineering?3. Write any four aims of value engineering?4. Write the basic steps of value engineering?5. Define time value of money?6. Define single payment compound amount method?7. Define single payment present worth factor?8. Define equal payment series sinking fund factor method?9. Define equal payment series present worth factor method?10. Define equal payment series capital recovery factor method?PART B1. Explain in details about criteria for make or buy decisionand its approaches? (Also seeproblems) (16)2. Problems in single payment compound amount method?

(16)3. Problems in single payment present worth factor?(16)4. Problems in equal payment series sinking fund factor method?(16)5. Problems in equal payment series present worth factor method?(16)6. Problems in equal payment series capital recovery factormethod?(16)7. ( i) What is uniform gradient conversion?Illustrate with an

example. (8)(ii)What is value engineering ?With suitable example ,explainthe various phases of value (8)engineering job plan(a) An engineer is considering two types of pressure sensors fora low pressure steam line.The costs are shownbelow.Which should be selected based on a present worthcomparison at an interest rate of 16 % per year?


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Type X Type YFirst cost Rs 76,000 Rs 1,29,000Maintenance cost/year 12,000 9000Salvage value 0 20,000life,years 2 4

UNIT III CASH FLOWPART A

1. Write down the techniques for comparing the worthiness of theproject?2. Define present worth method( Revenue dominated cash flowdiagram)3. Define future worth method( Revenue dominated cash flowdiagram)4. Define future worth method(cash dominated cash flow diagram)5. Define Annual equivalent method(Revenue dominated cash flow

diagram)6. Define Annual equivalent method(cost dominated cash flowdiagram)7. Define rate of return method?

8. What is annual equivalent method of comparing alternatives?9. What is revenue dominated cash flow?10 What is the economic life of a project?11 What are the various methods available in decision making inselection ofAlternative in economic analysis of investment?

PART B

1. Problems in present worth method (Revenue dominated cash flowdiagram) (16)2. Problems in future worth method (Revenue dominated cash flowdiagram) (16)3. Problems in Annual equivalent method (Revenue dominated cashflow diagram) (16)4. Problems in Annual equivalent method (cost dominated cashflow diagram) (16)

5. Problems in rate of return method (16)6.. A company that manufactures amplified transducers is tryingto divide between the machines shownbelow.Compare them on the basis of annual worth using aninterest rate of 155 pr yearVariable speed Dual speedFirst cost,Rs 4,50,000 2,40,000


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Annual operating cost Rs 3,10,000 3,50,000Overhaul in years 2 and 4 ,Rs 60,000Overhaul in years 5 ,Rs 1,20,000 -Salvage value ,Rs 1,00,000 80,000Life ,years 8 6

UNIT IV REPLACEMENT AMD MAINTAINENCE ANALYSESPART A

1. Write the different types of maintenance?2. Define prevention maintenance (PM)?3. Define Break down maintenance ?4. Write the different types of Replacement?5. Define economic life of an asset?6. What are the types of Replacement policies?7. What are the types of replacement problem?

PART B

1. Problems in Maintenance (16)2. Problems in types of Replacement? (16)3. Problems in finding the economic life of an asset? (16)4. Problems in Capital recovery with return (16)5. Problems in Simple probabilistic model for assets which failcompletely (16)6.(i) What is defender challenger concept in replacement?Illustrate with an example. (8)(ii)Explain the causes for replacement of assets ,in detail with

examples (8)7. Initial cost of a machine is Rs 6,00,000, with other detailsas below: (8)Year 1 2 3 4 5Resale value (Rs) 4,20,000 3,00,000 2,04,000 1,44,000 96,500Cost of spares (Rs) 40,000 42,700 48,800 57,000 68,000Cost of labour (Rs) 1,40,000 1,60,000 1,80,000 2,10,00 02,50,000Determine the optimum period for replacement of the machine.

UNIT-5

DEPRECIATIONPART A

1. Define Depreciation?2. What are the types of Depreciation?3. Define Straight line method of depreciation?4. Define Declining balance method of depreciation?5. Define Sum of the year-digits method of depreciation?


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6. Define sinking fund method of depreciation?7. Define Service output method of depreciation?8. Define inflation?9. List the reasons for inflation?10. List the effect of inflation ?

PART B

1. Problems in different types of depreciation methods (16)2. Problems in inflation adjusted decision (16)3. Problems in finding the economic life of an asset (16)4. (a) (i) How to adjust inflation in evaluating publicalternatives? Explain the procedure. (8)(ii)Find the depreciation annuity by annuity method after threeyears,when the initial cost of the machine is Rs8,00,000 an salvage value at the end of three years is Rs4,00,000.Rate of interest 10 % (8)5. (i) What is economic life of an asset?How to determine it?Explain(ii) The cost of a machine is Rs 1,60,000 and its scrap value isRs 40,000 .Estimate life 5 years .Using sum ofyears digits method ,determine depreciation charges for eachyear.

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maintenance question