The main objective of the study is to analyze the service quality of CDMA mobile service in Coimbatore city of Tamil Nadu, India. One twenty respondents were randomly selected and they were personally interviewed. For collection of primary data from respondents (customers) separate well structured interview schedule was prepared based on the objectives of the study and pretested. Statistical tools like Percentage Analysis, Garrett's Ranking Technique, Factor analysis, Chi-square test, Gap analysis and paired t test were used to analyze the data. The results showed that majority of the respondents switched over from other mobile services to CDMA mobile service because of good schemes, call rate, low price of mobiles, CDMA technology and tariff plan.

The objective of the study is to identify the brand preference of farmers towards Drip Irrigation Systems in Erode district of Tamil Nadu, India; to identify the factors influencing the preference for the use of a particular brand and to identify the effectiveness of promotional activities followed by Manufacturers /dealers of different brand. The farmers those who are using drip irrigation system were selected purposively. The total size of sample respondents was fixed as 100 farmers and 25 dealers for the study. Most of the farmers felt that by using drip irrigation they are saving the labour cost occupies the first rank followed by easy irrigation. Netafim was mostly used brand by farmers followed by Jain irrigation system, flowtech etc. Most of the dealers' doing direct approach promotional activities followed by through existing customers. All the dealers of different companies were getting 5-10 Percent of margin for sale of their brand. Most of the dealers felt that credit availability was the important one to influence the brand preference of drip irrigation system followed by good brand image and quality of the product.