Electrical Machines
When a DC cummulative compound wound motor is loaded

 Torque decrease and speed increases.
  Torque increase and speed decrease.
 Both torque and speed decrease.
 Torque and speed both increase.

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Electrical Machines
An inverted V curve of synchronous motor shows variation of

  power factor and DC excitation at constant load.
 power factor and supply voltage during hunting.
 supply voltage and excitation current at constant load.
 supply voltage and field current at constant excitation.

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