Oct 20 (Reuters) - Tesla Inc on Wednesday beat Wall Street expectations for third-quarter revenue on the back of record deliveries, as the electric carmaker navigates through a prolonged global shortage of chips and raw materials. The carmaker, led by billionaire entrepreneur Elon Musk, said revenue rose to $13.76 billion from $8.77 billion a year earlier. Analysts had expected revenue of about $13.63 billion, according to IBES data from Refinitiv. Reporting by Subrat Patnaik in Bengaluru and Hyunjoo Jin in San Francisco; Editing by Maju Samuel