Electrical Machines
The ___________________ generator has the poorest voltage regulation.

  shunt.
  over compounded.
  under-compounded.
  differential compounded.

ANSWER DOWNLOAD EXAMIANS APP

Electrical Machines
In a DC machine

 current and emf in armature are unidirectional
 current and emf at the terminals are alternating.
 emf in armature conductors and at the terminals is alternating.
 current and emf in armature are alternating.

ANSWER DOWNLOAD EXAMIANS APP

Electrical Machines
In the 3-phase induction motor, the resultant flux is of a constant nature and is

 equal to φm, where φm is the maximum flux due to any phase
 3 times maximum value of flux due to any phase
 3/2 times maximum value of flux due to any phase
 1/2 times maximum value of flux due to any phase

ANSWER DOWNLOAD EXAMIANS APP

Electrical Machines
In a DC machine, for the same value of φ, Z and N; which one of the following statements is correct?

 Armature emf is same as long as the flux density in the air gap remains the same.
 Armature emf is less with wave winding than with lap winding.
 Armature emf depends on weather the machine is running as a motor or generator.
  Armature emf is more with wave winding than with lap winding.

ANSWER DOWNLOAD EXAMIANS APP