Electrical Machines
Which of the following generators are used in arc welding?

 shunt generators
 cumulative compound generators
 differential compound generators
 series generators

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Electrical Machines
If the frequency of input voltage of a transformer is increased keeping the magnitude of voltage unchanged, then

 Pe will increase but Ph will decrease
 both hysteresis loss(Ph) and eddy current loss(Pe) will increase
 Ph will decrease but Pe will remain same
 Ph will increase but Pe will decrease

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Electrical Machines
Which of the following statements is/are correct statements?

 EMF per turn in both the windings are equal
 EMF per turn in HV winding is more than EMF per turn in LV winding
All of these
 EMF per turn in HV winding is less than EMF per turn in LV winding

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