Electrical Machines A DC Shunt Motor having shunt field resistance of 250 Ω and armature resistance of 0.5 Ω is connected to 250 V supply and load current of 21 A. What is the back emf generated ? 210 V 240 V. 150 V. 230 V. 210 V 240 V. 150 V. 230 V. ANSWER DOWNLOAD EXAMIANS APP
Electrical Machines If a DC motor is connected across the AC supply it will Burn. Not run. Run at lower speed. Run at normal speed. Burn. Not run. Run at lower speed. Run at normal speed. ANSWER DOWNLOAD EXAMIANS APP
Electrical Machines Which of the following statements is/are correct statements? EMF per turn in HV winding is less than EMF per turn in LV winding All of these EMF per turn in HV winding is more than EMF per turn in LV winding EMF per turn in both the windings are equal EMF per turn in HV winding is less than EMF per turn in LV winding All of these EMF per turn in HV winding is more than EMF per turn in LV winding EMF per turn in both the windings are equal ANSWER DOWNLOAD EXAMIANS APP
Electrical Machines A 4 pole dc generator is running at 1500 rpm the frequency of current in the armature winding is 150Hz. 100Hz. 200Hz. 50Hz. 150Hz. 100Hz. 200Hz. 50Hz. ANSWER DOWNLOAD EXAMIANS APP
Electrical Machines Iron loss in a transformer mainly occurs in iron made tank of transformer. transformer insulating oil. winding of transformer. steel core in transformer. iron made tank of transformer. transformer insulating oil. winding of transformer. steel core in transformer. ANSWER DOWNLOAD EXAMIANS APP
Electrical Machines What is the highest possible speed of turbo alternators? 1000 rpm 1500 rpm 3000 rpm 4000 rpm 1000 rpm 1500 rpm 3000 rpm 4000 rpm ANSWER DOWNLOAD EXAMIANS APP
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