Dear Supraja,
Below are some general KRAs of Training Manager, Assistant Manager Training, Trainers, but the specific KRAs surely will depend upon the industry --
Performing Training Need analysis
Design, Execute, Deliver, Implement, Monitor and Evaluate Training Programmes
Drafting Training Plans and Calendars
Planning budgets for Training Programs
Developing and Reviewing Course materials on all modules of Training
Plan and implement classroom training successfully
Document study materials effectively
Training professional graduates like B. Tech, M. Tech, MCA, MBA, M. Sc graduates on all skills to bridge their skill gaps
Consolidating Feedbacks & conducting Post Training Effectiveness
Mapping Metrics for the Training department
Selecting Senior Trainers and mentoring them
Developing Activity oriented exercises for the skills to be imparted
Train the Trainers
Hope this will help.