Electrical Machines In a DC Shunt Motor if the load current increases then field flux remains constant. increases. decreases decreases. remains constant. increases. decreases decreases. ANSWER DOWNLOAD EXAMIANS APP
Electrical Machines What is the highest possible speed of turbo alternators? 1000 rpm 3000 rpm 4000 rpm 1500 rpm 1000 rpm 3000 rpm 4000 rpm 1500 rpm ANSWER DOWNLOAD EXAMIANS APP
Electrical Machines The efficiency of a transformer is mainly dependent on dielectric losses. copper losses. stray losses. core losses. dielectric losses. copper losses. stray losses. core losses. 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. 13.5 A. 27 A. 11.5 A. 23 A. 13.5 A. 27 A. 11.5 A. ANSWER DOWNLOAD EXAMIANS APP
Electrical Machines When the armature current of 5 Amp is flowing through the dc motor the torque produced is 47 Nm. Keeping the speed constant if the armature current is increased to 7 amp, calculate the new torque. Assume losses to be constant. 65.8 Nm. 74 Nm. 38.5 Nm. 27.73 Nm . 65.8 Nm. 74 Nm. 38.5 Nm. 27.73 Nm . ANSWER DOWNLOAD EXAMIANS APP
Electrical Machines Where the shunt generators are widely used? Where the load is very high. Where a constant voltage is required over a narrow load range. Where voltage variation is needed over a wide load range. Where often load fluctuation is occurred. Where the load is very high. Where a constant voltage is required over a narrow load range. Where voltage variation is needed over a wide load range. Where often load fluctuation is occurred. ANSWER DOWNLOAD EXAMIANS APP
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