Chapter 4 ELECTRIC TRACTION MCQs

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1. . A major advantage of electric traction is:





2. . Single phase AC traction system uses voltages:





3. . DC series motor is widely suitable for traction purpose because of:





4. . BLDC motor is also called:





5. . In series-parallel speed control method of DC series motor we can achieve:





6. . In field weakening speed control method of DC series motor, a rheostat is connected:





7. . A suitable manual controller where frequent starting, varying speed and reversing are necessary is:





8. . Brake by plugging can be applied to the DC motor by reversing the current through:





9. . In this braking method, armature of DC shunt motor is disconnected from main supply and connected with external resistance:





10. . Most modern electric vehicles use:





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