Question

what is wap4 in railway​

Answer 1

The WAP-4 (Wide gauge, AC traction, Passenger service, 4th in series) is a class of passenger hauling electric locomotive used in Indian Railways.

The locomotive was developed after its predecessor, the WAP-1, was found inadequate to haul the longer, heavier express trains (24-26 coaches) that were becoming the mainstay of the Indian Railways network. It was introduced in 1994, with a similar body-shell to the WAP-1 class, but with Hitachi traction motors. The electrical systems are traditional direct-current loco type tap changers, driving six traction motors arranged in Co-Co fashion. The locomotive has proved to be highly successful, with more than 750 units in service. Newer examples have been fitted with microprocessor-controlled diagnostics, static converter units (instead of arnos) and roof-mounted dynamic (rheostatic) brakes. The locomotive can be seen in service across the entire electrified network of Indian Railways and is homed at 14 locomotive sheds.

Production of this class was halted in December 2015 with locomotive number 25051 being the last unit to be rolled out of Chittaranjan Locomotive Works.

Answer 2

               

Explanation:

its a loco in Indian railways                                                                                                   its use to  take passengers and goods train