Electrical Machines Damper winding is used to increase the load current. both 1 and 2. suppress the hunting. decrease the load current. increase the load current. both 1 and 2. suppress the hunting. decrease the load current. ANSWER DOWNLOAD EXAMIANS APP
Electrical Machines Two transformers operating in parallel will share the load depending on their ratings leakage reactance per unit impedance efficiency ratings leakage reactance per unit impedance efficiency ANSWER DOWNLOAD EXAMIANS APP
Electrical Machines A 4 pole DC shunt generator having a wave winding supplies 50 lamps, each of 60 W at 120 V. The armature and field resistance are 0.2 Ω and 60 Ω respectively. The current in each armature conductor is 23 A. 11.5 A. 13.5 A. 27 A. 23 A. 11.5 A. 13.5 A. 27 A. ANSWER DOWNLOAD EXAMIANS APP
Electrical Machines In a DC generator, the armature reaction results in magnetization of leading and demagnetization of trailing pole tip. demagnetization of leading & magnetization of trailing pole tip. demagnetization of centers of poles. magnetization of inter poles. magnetization of leading and demagnetization of trailing pole tip. demagnetization of leading & magnetization of trailing pole tip. demagnetization of centers of poles. magnetization of inter poles. ANSWER DOWNLOAD EXAMIANS APP
Electrical Machines To achieve spark less commutation brushes of DC generator are rocked ahead so as to bring them in magnetic neutral axis. None of these just behind the magnetic neutral axis. just ahead of magnetic neutral axis. in magnetic neutral axis. None of these just behind the magnetic neutral axis. just ahead of magnetic neutral axis. ANSWER DOWNLOAD EXAMIANS APP
Electrical Machines A cumulatively compounded dc motor delivers rated load power at rated speed. If the series field is short-circuited, then Ia remains constant but ωm increase both decrese both armature current Ia and speed ωm increase Ia increases and ωm decreses Ia remains constant but ωm increase both decrese both armature current Ia and speed ωm increase Ia increases and ωm decreses ANSWER DOWNLOAD EXAMIANS APP
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