Electrical Machines
The armature core of the rotor bars of dc motors are laminated

  to reduce hysteresis loss.
  to reduce eddy current loss.
  to reduce mechanical losses.
  to provide better flux linkage.

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Electrical Machines
In case of a DC Shunt motor if the load is decreased to some extent, what will happen to its speed?

 The speed will remains almost constant.
 The speed will increase abruptly.
 The speed will increase gradually.
 The speed will increase in proportion to reduction in load.

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Electrical Machines
In a step down transformer which one of the following statements is true?

 Secondary current is less than primary current.
 Number of secondary turns is more than that of primary.
 Secondary power is less than primary power.
  Number of secondary turns is less than primary turns.

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