53) Which type of D.C. motor is used for elevators ?

D.C. shunt motor

D.C. series motor

D.C. cumulative compound motor

D.C. differential compound motor

Answer is:

D.C. cumulative compound motor

D.C. series motor

D.C. shunt motor

D.C. cumulative compound motor

D.C. differential compound motor

Answer is:

fan motors

electric trains

food mixers

printing machines

Answer is:

Series field tapping method

Series field diverter method

Series parallel method

Supply voltage control method

Answer is:

current carrying conductor placed in a uniform magnetic field experiences a force on it

conductor moves when kept in a uniform magnetic field

magnetic field set up by varying current which produces force in the conductor

combined magnetic field set up by two current carrying conductors produces a force between them

Answer is: