Electrical Machines
An induction motor has a rotor resistance of 0.002 Ω / phase. If the resistance is increased to 0.004 Ω / phase then the maximum torque will

 increase by 100%
 increase by 200%
 reduced to half
 remain unaltered

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Electrical Machines
For a single phase capacitor start induction motor which of the following is valid?

 None of these.
 Rotation can be changed by interchanging supply terminals.
  Rotation can be changed by reversing main winding terminals.
 Direction of rotation cannot be changed.

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

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

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