Download GTU BE/B.Tech 2019 Summer 8th Sem New 2180912 Condition Monitoring Question Paper

Download GTU (Gujarat Technological University) BE/BTech (Bachelor of Engineering / Bachelor of Technology) 2019 Summer 8th Sem New 2180912 Condition Monitoring Previous Question Paper

1
Seat No.: ________ Enrolment No.___________

GUJARAT TECHNOLOGICAL UNIVERSITY

BE - SEMESTER ?VIII(NEW) EXAMINATION ? SUMMER 2019
Subject Code:2180912 Date:09/05/2019

Subject Name:Condition Monitoring

Time:10:30 AM TO 01:00 PM Total Marks: 70

Instructions:

1. Attempt all questions.

2. Make suitable assumptions wherever necessary.

3. Figures to the right indicate full marks.

MARKS

Q.1 (a) Explain polarization index of transformer. 03
(b) What is insulation resistance? Explain detail Insulation resistance of
Transformer and induction motor.
04
(c) Explain modern tools and techniques used in condition monitoring. 07

Q.2 (a) Explain Gas ratio method. 03
(b) Explain Aging of electrical Power infrastructure. 04
(c) Explain Frequency Response Analysis method for power transformer. 07
OR
(c) Explain Transformer oil paper insulation system. 07
Q.3 (a) Explain signature analysis of condition monitoring. 03
(b) Explain Partial Discharge measurements. 04
(c) What in necessity of Frequency response analysis? Explain various test of
FRA.
07
OR
Q.3 (a) Explain OLTC and Bushing diagnostics of transformer. 03
(b) Write insulation failure modes. 04
(c) Explain modern approach for condition monitoring of power transformers. 07
Q.4 (a) Write factor affecting degradation of insulation. 03
(b) Write any one rotating machine full specification as per standard and
Briefly describe insulation failure modes.
04
(c) Explain in brief Construction, operation and failure modes of electrical
machines.
07

OR
Q.4 (a) Classify types of insulation used in rotating machine. 03
(b) Explain Instrumentation requirement for Temperature measurement. 04
(c) Explain structure of electrical machines and their types. 07
Q.5 (a) Explain Air-Gap Eccentricity. 03
(b) Explain Vibration terminology. 04
(c) Explain identifying methods of mechanical faults with motor current
signature analysis.
07
OR

Q.5 (a) Explain shorted turns in stator windings. 03
(b) Explain lubrication oil and bearing degradation. 04
(c) Explain condition monitoring of rotating elements. 07

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