In India, there is a wide network of Business Schools that offers Master Degree Programs with several disciplines of Management.

You can take admission in one of following Master Degree Programs after B.Tech. There Programs are equivalent to MBA:

PGDM ( International Business)
PGDM ( Marketing and Information Systems)
PGDM (Banking, Insurance, Finance and allied services)
PGDM (Insurance Business)
PGDM (International Business)
PGDM - Infrastructure Management
PGDM - Mass Media Communication
Post Graduate Diploma in Retail Management (PGDRM)
Post Graduate Diploma in Banking, Insurance and Financial Services (PGDBIF)
Post Graduate Diploma in Business Administration (PGDBA) - Insurance & Risk Management
Post Graduate Diploma in Business and Economics (PGDBE)
Post Graduate Diploma in Business Management (Marketing)
Post Graduate Diploma in Finance Management (PGDFM)
Post Graduate Diploma in Foreign Trade
Post Graduate Diploma In Human Resource Development
Post Graduate Diploma in Human Resource Management (PGDHRM)
PGDM ( Marketing and Finance)
PGDM (Sustainable Development Practices)
PGDM (Development and Sustainable Finance)
PGDM Financial Engineering
Post Graduate Diploma in Business Administration (PGDBA)
Post Graduate Diploma in Agri-Business Management (PGDABM)
Post Graduate Diploma in Business Administration (PGDBA) – System
Post Graduate Diploma in Co-operative Business management (DCBM)
Post Graduate Diploma in General Management (PGDGM)
Post Graduate Diploma in Business Management (Family Business)
Post Graduate Diploma in Entrepreneurship & Business Management (PGDEBM),
Post Graduate Diploma in Hotel & Tourism Management (PGDHTM)

You can take admission in any of these courses after B.Tech Course. These are all equivalent to MBA Program.

Here I am providing list of top Business Schools where you can apply for admission:

Top Business Schools in India
Indian Institute of Management Raipur (IIM-Ra)
XLRI Xavier School of Management, Jamshedpur
International Management Institute (IMI), New Delhi
Department of Industrial and Management Engineering (IME), Indian Institute of Technology Kanpur (IITK)
Indian Institute of Management Rohtak (IIM-Ro)
Department of Management Studies (DoMS), Indian Institute of Technology Madras (IITM)
Indian Institute of Management Lucknow (IIML)
Institute of Management Technology (IMT), Ghaziabad
Sydenham Institute of Management Studies and Research and Entrepreneurship Education (SIMSREE), Mumbai
Indian Institute of Management Calcutta (IIMC)
Indian Institute of Management Kozhikode (IIMK)
Indian Institute of Management Kashipur (IIM-Ka)
Indian Institute of Management Bangalore (IIMB)
Indian Institute of Management Indore (IIMI), Mumbai campus
Vinod Gupta School of Management (VGSOM), Indian Institute of Technology Kharagpur
S. P. Jain Institute of Management & Research (SPJIMR), Mumbai
Indian Institute of Management Udaipur (IIMU)
Management Development Institute (MDI), Gurgaon
Department of Management Studies (DOMS), Indian Institute of Technology Roorkee (IITR)
Symbiosis Centre for Management and Human Resource Development (SCMHRD), Pune
Symbiosis Institute of Business Management (SIBM), Pune
MICA Ahmedabad
Xavier Institute of Management Bhubaneswar (XIMB)
Indian Institute of Management Ahmedabad (IIMA)
Faculty of Management Studies (FMS), University of Delhi, Delhi
Jamnalal Bajaj Institute of Management Studies Mumbai (JBIMS)
University of Delhi,Department of Commerce, Delhi School of Economics
Tata Institute of Social Sciences (TISS), Mumbai
Department of Management Studies (DOMS), Indian Institute of Science Bangalore (IISc)
Department of Financial Studies (DFS), University of Delhi, South Campus