Failure Analysis Of Centrifugal Pump On The Basis Of Survey

The Study of Failure Analysis of Centrifugal Pump on the Basis of Survey Deeptesh Singh1, Dr. Amit Suhane2, M.K. Thakur3

1Student, Department of Mechanical Engineering,
Maulana Azad National Institute of Technology, Bhopal (M.P.), India [e-mail] 2Assistant Professor, Department of Mechanical Engineering,
Maulana Azad National Institute of Technology, Bhopal (M.P.), India

3Senior Manager, F.E.X. Division,
Bharat Heavy Electricals Limited, Bhopal (M.P.), India

Abstract: In this paper, the studies of failure analysis of centrifugal pump from the perspective of life its components and frequency of occurrence of failure in it has done. Hence, a survey was conducted in industrial users based on questionnaire and data collected

Table 1 Questionnaire Related Pair of Centrifugal Pump the value of Cronbach’s Alpha.

Questionnaire Pair Of Centrifugal Pump Cronbach’s Alpha Value Industrial Users
Group 1 Survey 0.849
Group 2 Survey 0.925

 Cronbach’s Alpha Value Analysis defines internal consistency of collected data

 For Reliability, the value of Cronbach’s Alpha should not be less than 0.7.

Cronbach’s alpha coefficient values calculated for the two groups of questions are 0.849 & 0.925 for industrial users, as shown in Table-1. Therefore, above values are greater than 0.7, the survey data are considered to be reliable and used for analysis. [6] 4.2 Hypothesis Testing
Non-parametric Friedman test collected data with a 0.05 level of significance. With the help of SPSS, critical values from survey table are compared with test statistics calculated and these values of test statistic exceed critical values for two group sets of questions, as shown in Table-2. Hence, alternative hypothesis Ha is accepted and null hypothesis H0 is rejected. [7]

Table 2 Non-parametric Friedman’s Test Results

S.No Questionnaire D.O.F.
(n-1)
Critical
Value
( χ2α ) Calculated test statistic