Electrical Machines If an additional resistance is connected in series with a DC motor operating at rated speed, the speed of the motor will Oscillate around the normal speed. Reduce. Remain unaltered. Increase. Oscillate around the normal speed. Reduce. Remain unaltered. Increase. ANSWER DOWNLOAD EXAMIANS APP
Electrical Machines Magnetic field of a DC generator is produced by what? Both B and C. Electromagnets. None of the options. Permanent magnets. Both B and C. Electromagnets. None of the options. Permanent magnets. ANSWER DOWNLOAD EXAMIANS APP
Electrical Machines In dc machine armature windings are placed on rotor because of the necessity for development of torque. generation of voltage. commutation. electromechanical energy conversion. development of torque. generation of voltage. commutation. electromechanical energy conversion. ANSWER DOWNLOAD EXAMIANS APP
Electrical Machines Two windings provided on the stator of 1-phase induction motor, one main winding and the other auxiliary winding are connected either of these depending on the design of the motor in parallel through inductive coupling in series either of these depending on the design of the motor in parallel through inductive coupling in series ANSWER DOWNLOAD EXAMIANS APP
Electrical Machines Open circuit in a transformer is prefered with rated transformer voltage direct current rated transformer current high frequency supply rated transformer voltage direct current rated transformer current high frequency supply ANSWER DOWNLOAD EXAMIANS APP
Electrical Machines When the mechanical power is developed by a DC motor maximum None of above. Back emf is equal to half of applied voltage. back emf is equal to applied voltage. Back emf is equal. None of above. Back emf is equal to half of applied voltage. back emf is equal to applied voltage. Back emf is equal. ANSWER DOWNLOAD EXAMIANS APP
EXAMIANS