WAP 7 is a high speed locomotive indigenously developed by Chittaranjan Locomotive Works. It is capable of hauling trains at speeds ranging between 140 and 160 km per hour and is now largely used by Northern Railways (NR), South Central Railways (SCR), South Western Railway (SWR) and Southern Railways (SR) With a maximum speed rating of 180 km/h (IR restricts it to 145 km/hr), the WAP-7 boasts of the most phenomenal acceleration figures while hauling mail/express trains. The WAP-7 can also haul loads of 24-26 passenger coaches (1430-1550t) at 110+ km/h per hour. It is also known to haul 16 heavyweight Air Conditioned coaches (1120t) in 1:40 inclines single-handedly. At a trial conducted by Indian Railways, it clocked a speed of 177 km/h. It is the most successful passenger locomotive in the Indian Railways portfolio after the WAP-4. It is used to haul premium trains like the Rajdhani Express and the...
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Shatabdi Express apart from other regular mail/express trains. It also regularly hauls other trains like the Nizamuddin-Chennai, Nizamuddin-Bangalore, New Delhi-Sealdah and the New Delhi - Mumbai Rajdhani Expresses.
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WAP 5 is the name of a class of electric locomotive used by Indian Railways. The first 10 locomotives were imported from ABB in Switzerland in 1995. They are supposed to be a variant of the Lok 2000. Chittaranjan Locomotive Works (CLW) started production in 2000. It was designed to haul 18 coach passenger trains at 162 km/h (101 mph). It is the first 3-phase locomotive in India.
Other notable features of this locomotive are the provision of taps from the main transformers for hotel load, pantry loads, flexible gear coupling, wheel-mounted disc brakes, and a potential for speed enhancement to 225 km/h (140 mph). Braking systems include regenerative braking (160 kN), loco disc brakes, automatic train air brakes, and a charged spring parking brake. MU operation possible with a maximum of two locos. At trials, a WAP-5 has been tested up to 184 km/h (114 mph).
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WAM-4 is the name of a type of electric locomotive used in India. It is a very successful locomotive in Indian Railways' fleet. The first one was indigenously designed and built by CLW in 1970-71 Top speed 110 km/h (68 mph)
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WAP-4 is one of the most important electric locomotives used in India. It is a very powerful class, capable of hauling 26 coaches at a speed of 140 km/h (they have a max speed of 175 km/h). It is also among the most widely used locomotives.
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horse powers WAP 7=6350,WAP 5=5450 WAM 4=3850 WAP 4 5350
Gear Ratio WAP 7 =72:20 WAP 5=67:35:17. (3-stage gears) WAM 4=15:62 WAP 4=23:58
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PS:WAP 7 stands at the first in everything so it dont have any match and WAP 5 is its bro so both are same likely :)