Electrical Machines The change in speed of a DC generator due to increased load is corrected by increasing armature cooling. increasing input power of the prime mover. increasing terminal voltage. increasing armature resistance. increasing armature cooling. increasing input power of the prime mover. increasing terminal voltage. increasing armature resistance. ANSWER DOWNLOAD EXAMIANS APP
Electrical Machines If the flux of DC motor approaches zero, its speed will remain unchanged. between zero and infinity. approach zero. aprroach infinity. remain unchanged. between zero and infinity. approach zero. aprroach infinity. ANSWER DOWNLOAD EXAMIANS APP
Electrical Machines The constant losses in transformer is/are eddy current loss. both 2 and 3. copper loss. hysteresis loss. eddy current loss. both 2 and 3. copper loss. hysteresis loss. ANSWER DOWNLOAD EXAMIANS APP
Electrical Machines If the field connection of a DC Shunt Motor is changed then it will run in same direction. it will run in same direction by slowly. it will run in opposite direction. motor will not run. it will run in same direction. it will run in same direction by slowly. it will run in opposite direction. motor will not run. ANSWER DOWNLOAD EXAMIANS APP
Electrical Machines The armature of DC machine is made of silicon steel lamination to reduce eddy current loss only. reduce both eddy current and hysteresis loss. reduce hysteresis loss only. increase the permeability. reduce eddy current loss only. reduce both eddy current and hysteresis loss. reduce hysteresis loss only. increase the permeability. ANSWER DOWNLOAD EXAMIANS APP
Electrical Machines Consider the following statements: To control the speed of a dc shunt motor above the base speed over a reasonably wide range, the motor must 1. have compensating winding 2. have interpole winding 3. be started using a 3-point starter 4. be started using a 4-point starter Of these statements 2 and 4 are correct 1, 2 and 4 are correct 1 and 3 are correct 1, 2 and 3 are correct 2 and 4 are correct 1, 2 and 4 are correct 1 and 3 are correct 1, 2 and 3 are correct ANSWER DOWNLOAD EXAMIANS APP