Electric traction. Rotating electrical machines for rail and road vehicles. Machines other than electronic converter-fed alternating current motors|Type testing, Acoustic testing, Railway electric traction equipment, Temperature rise, Electrical testing, Railway equipment, Road vehicle components, Electric motors, Electrically-operated devices, Rotating electric machines, Performance testing, Road vehicles, Efficiency, Dielectric-strength tests, Overspeed tests, Electric machines, Locomotives, Starting Commutators, Vibration testing Railway applications