Electrical Machines Iron losses in a DC machine are independent of variation in voltage. speed and voltage. load. speed. voltage. speed and voltage. load. speed. ANSWER DOWNLOAD EXAMIANS APP
Electrical Machines Which of the following is/are effects of armature reaction? increase the iron loss All of these increase the maintenance and repair increases the design cost increase the iron loss All of these increase the maintenance and repair increases the design cost ANSWER DOWNLOAD EXAMIANS APP
Electrical Machines Which of the following represents the pitch factor? Cos α² sin (α/2) Cos (α/2) Cos α Cos α² sin (α/2) Cos (α/2) Cos α ANSWER DOWNLOAD EXAMIANS APP
Electrical Machines In an ideal DC generator the regulation is low. high. zero. positive. low. high. zero. positive. ANSWER DOWNLOAD EXAMIANS APP
Electrical Machines If a DC Series motor is connected across an AC supply it will run at normal speed. not run. run at lower speed. burn. run at normal speed. not run. run at lower speed. burn. ANSWER DOWNLOAD EXAMIANS APP
Electrical Machines Two synchronous generators operating in parallel 200 MW and 400 MW respectively. The drooping characteristics of their governors are identical as 4% from no load to full load. Consider the governors operating at 50Hz on no load. What is the operating frequency, if the load is 600 MW? 48 Hz 45 HZ 48.5 Hz 50 Hz 48 Hz 45 HZ 48.5 Hz 50 Hz ANSWER DOWNLOAD EXAMIANS APP
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