DC Motors A direct on line starter is used for starting motors Upto 20 HP Upto 15 HP Upto 5 HP Upto 10 HP Upto 20 HP Upto 15 HP Upto 5 HP Upto 10 HP ANSWER DOWNLOAD EXAMIANS APP
DC Motors D.C. generators are normally designed for maximum efficiency around Rated r.p.m. Full load Rated voltage All of these Rated r.p.m. Full load Rated voltage All of these ANSWER DOWNLOAD EXAMIANS APP
DC Motors The back emf in a dc motor ______ Opposes the applied voltage None of the listed here Aids the applied voltage Aids the armature current Opposes the applied voltage None of the listed here Aids the applied voltage Aids the armature current ANSWER DOWNLOAD EXAMIANS APP
DC Motors A series motor will over speed when Load is removed The field is opened The load is increase The armature circuit is opened. Load is removed The field is opened The load is increase The armature circuit is opened. ANSWER DOWNLOAD EXAMIANS APP
DC Motors Ward-Leonard control is basically a Voltage control method Field divertor method Field control method Armature resistance control method Voltage control method Field divertor method Field control method Armature resistance control method ANSWER DOWNLOAD EXAMIANS APP
DC Motors The main disadvantage of the Ward-Leonard control method is High maintenance cost All of these High initial cost Low efficiency at high loads High maintenance cost All of these High initial cost Low efficiency at high loads ANSWER DOWNLOAD EXAMIANS APP
EXAMIANS