1. Is there an electric motor of any type that does not produce back emf. 2. Is it possible to design a motor that does not generate back emf. 3.What are the demerits of designing a motor that do not produce back emf. 4. What are the merits of having a motor that generate back emf. 5. Suppose a 9v dc source is connected to a dc motor, now due to back emf that is generated in the motor winding, the effective volts is less than 9v. Hypothetically, if the motor does not produce back emf, does this mean the effective voltage in motor would be 9v and is the motor going to rotate much faster.