Electrical Machines
Essential conditions for two DC generators are connecting for parallel operation is/are

 polarities should be same.
 rating of generators should be same.
 both A and B.
 terminal voltage should be same.

ANSWER DOWNLOAD EXAMIANS APP

Electrical Machines
DC Motor

  dc compound motor.
  dc shunt with armature resistance control.
  dc series motor.
  dc shunt motor with field weakening.

ANSWER DOWNLOAD EXAMIANS APP

Electrical Machines
A compound dc generator is delivering full load current at a terminal voltage of 230 V. Its series-field winding gets short circuited. If its terminal voltage 1. becomes more than 230 V, it is overcompounded generator 2. becomes more than 230 V, it is differentially compounded generator 3. becomes less than 230 V, it is overcompounded generator 4. becomes less than 230 V, it is differentially compounded generator 5. becomes less than 230 V, it is level compounded generator From these, the correct answer is

 1, 4
 1, 4, 5
 2,3
 2, 3, 5

ANSWER DOWNLOAD EXAMIANS APP

Electrical Machines
A 10 kW, 230 V, dc shunt machine has four terminals brought out through four leads. For this machine

 both the windings have thin leads
 both the windings have thick leads
 armature winding has thin leads whereas field winding has thick leads
 armature winding has thick leads whereas field winding has thin leads

ANSWER DOWNLOAD EXAMIANS APP
MORE MCQ ON Electrical Machines