Electrical Machines In DC generators, the residual magnetism is of the order of 10 %. 20 %. 2.5 %. 15 %. 10 %. 20 %. 2.5 %. 15 %. ANSWER DOWNLOAD EXAMIANS APP
Electrical Machines Which of the following represents the commutator pitch? Number of conductors spanned by one coil at the back end of the armature. The distance between the staring of first coil and its next successive coil Number of conductors spanned by one coil at the front end of the armature. Number of commutator segments between two successive coils. Number of conductors spanned by one coil at the back end of the armature. The distance between the staring of first coil and its next successive coil Number of conductors spanned by one coil at the front end of the armature. Number of commutator segments between two successive coils. ANSWER DOWNLOAD EXAMIANS APP
Electrical Machines Which of the following bearings and their uses are correct roller bearings → large machines neither 1 nor 2 both A and B ball bearings → small machines roller bearings → large machines neither 1 nor 2 both A and B ball bearings → small machines ANSWER DOWNLOAD EXAMIANS APP
Electrical Machines Select the motor that should not be started on no load? Series motor. Shunt motor. Compound motor. Brushless DC motor. Series motor. Shunt motor. Compound motor. Brushless DC motor. ANSWER DOWNLOAD EXAMIANS APP
Electrical Machines Sparkless commutation can be achieved by employing inter poles. any one or more of the above methods. high resistance carbon brushes. compensating winding. inter poles. any one or more of the above methods. high resistance carbon brushes. compensating winding. ANSWER DOWNLOAD EXAMIANS APP
Electrical Machines In which of the following speed control of DC motor the speed obtained is below than the rated speed? Armature circuit resistance control. Armature voltage control. Any of above. Field resistance control. Armature circuit resistance control. Armature voltage control. Any of above. Field resistance control. ANSWER DOWNLOAD EXAMIANS APP
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