Electrical Machines
A 2 pole synchronous machine is operating at 3000 rpm. Find the relation between electrical angular momentum (ωe) and mechanical angular momentum (ωm) ?

 ωe = 1/2*ωm
 ωe = 4*ωm
 ωe = ωm
 ωe = 2*ωm

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Electrical Machines
In an alternator, voltage drops occurs in

  armature resistance and leakage reactance.
  armature resistance only.
  armature resistance, leakage reactance and armature reaction.
  armature resistance, leakage reactance, armature reaction and earth connection.

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