F F192167 Pages:3

Reg No.:_ Name:

APJ ABDUL KALAM TECHNOLOGICAL UNIVERSITY
SIXTH SEMESTER B.TECH DEGREE EXAMINATION(S), DECEMBER 2019

Course Code: ME376
Course Name: Maintenance Engineering

Max. Marks: 100 Duration: 3 Hours
PARTA

Answer any three full questions, each carries 10 marks. Marks

1 a) How maintainability and reliability are related to availability? (4)
b) List and explain any four methods of reliability improvements (4)

c) How operational availability defer from inherent availability (2)

2 a) Sketch and explain the significance of bath tub curve (6)
b) Calculate the system reliability of a stereo effect music system with four mikes (4)

(reliability 0.95 each ) two boxes/speakers (reliability 0.8each) , one mixer
(reliability 0.98) , one amplifier (reliability 0.96) and three optional power
supply KSEB (reliability 0.85), battery (reliability 0.96) and generator
(reliability 0.82) . Sketch RBD of your arrangement
3 9) Sketch and explain any schematic arrangement to carry out conditioning (7)

monitoring by ‘thermography’ method for an electrical equipment

b) What are the limitations of breakdown maintenance (3)

4 ஐ List and explain the components of preventive maintenance (5)

b) What are basis on which maintenance strategies are selected (3)

c) What are the deferent types of corrective maintenance (2)
PART ‏تا‎

Answer any three full questions, each carries 10 marks.

5 93) _List and explain the principle and operation of any two vibration transducers (6)
b) How condition monitoring is done using vibration analyser. Give two examples (4)
of this application
6 9) Detail the process of wear debris analysis and spectrometric analysis used in (5)
condition monitoring
b) What are common debris elements present in lubricants (3)
c) On what basis the vibration severity charts are prepared (2)

7 8) Construct ௨ fault tree णि reliability block diagram below (7)

Page 1 of 3