BSNL TTA exam result has been announce that was conducted on 21.2.2016 as you said you are belong to OBC cast then here I am telling result of same :

BSNL TTA recruitment exam result OBC cast



BSNL Telecom Technical Assistant exam Syllabus
General Ability.
Basic Engineering.
Specialization.

General Ability
General English.
Verbal Reasoning.
Non-Verbal Reasoning.
Arithmetic Ability.

Basic Engineering
Applied Mathematics.
Applied Physics.
Basic Electricity.
Electronic Devices & Circuits.
Digital Techniques.

Specialization
Electrical.
Communication.
Network, Filters & Transmission Lines.
Instruments & Measurements.
Control Systems.
Microprocessors.
Computer.