Electrical Machines Transformer oil is used as a coolant. an insulator. both A and B. inert medium. a coolant. an insulator. both A and B. inert medium. 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 50 Hz 48.5 Hz 45 HZ 48 Hz 50 Hz 48.5 Hz 45 HZ ANSWER DOWNLOAD EXAMIANS APP
Electrical Machines The crawling in the induction motor is caused by low voltage supply high loads harmonics developed in the motor improper design of stator laminations low voltage supply high loads harmonics developed in the motor improper design of stator laminations ANSWER DOWNLOAD EXAMIANS APP
Electrical Machines A 3 - Φ, 6 pole, 50 Hz IM is running at a full load speed of 980 rpm. If it delivers an air gap power of 98000 Watt, calculate the rotor ohmic loss? 1920 Watt. 1800 Watt. 1960 Watt. 980 Watt. 1920 Watt. 1800 Watt. 1960 Watt. 980 Watt. ANSWER DOWNLOAD EXAMIANS APP
Electrical Machines Conservator tank is used to take up the expansion of oil due to temperature rise. None of these to act as an oil storage. for better cooling of transformer. to take up the expansion of oil due to temperature rise. None of these to act as an oil storage. for better cooling of transformer. ANSWER DOWNLOAD EXAMIANS APP
Electrical Machines The rotor speed of an induction motor is given by None of these Ns = 120f /p × ( 1 - r). Nr = 120f / p × (1-s). Ns = 120f / p × ( 1 - s ). None of these Ns = 120f /p × ( 1 - r). Nr = 120f / p × (1-s). Ns = 120f / p × ( 1 - s ). ANSWER DOWNLOAD EXAMIANS APP
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