Electrical Machines A three phase induction motor has a synchronous speed of 1500 rpm the machine runs at 1460 rpm at a particular load. The slip at this load is ___________. 5 %. 2.67 %. 1.5 %. 30 %. 5 %. 2.67 %. 1.5 %. 30 %. ANSWER DOWNLOAD EXAMIANS APP
Electrical Machines In an alternator the voltage generated per phase is proportional to All of these flux per pole. number of turns in coil. frequency of waveform. All of these flux per pole. number of turns in coil. frequency of waveform. ANSWER DOWNLOAD EXAMIANS APP
Electrical Machines Maximum allowable tan - delta (tanδ) of dielectric dispassion factor of power transformer insulating oil is generally taken as 2 at 90°C. 3 at 90°C. 0.5 at 90°C. 1 at 90°C. 2 at 90°C. 3 at 90°C. 0.5 at 90°C. 1 at 90°C. ANSWER DOWNLOAD EXAMIANS APP
Electrical Machines Which of the following DC Motor is used in paper machines? DC compound motor. Separately excited DC motor. DC Shunt motor. DC series motor. DC compound motor. Separately excited DC motor. DC Shunt motor. DC series motor. ANSWER DOWNLOAD EXAMIANS APP
Electrical Machines In dc motors, under leading pole tips flux density will--------? decrease None of these either increase or decrease increase decrease None of these either increase or decrease increase ANSWER DOWNLOAD EXAMIANS APP
Electrical Machines Conservator tank is used to take up the expansion of oil due to temperature rise. for better cooling of transformer. to act as an oil storage. None of these to take up the expansion of oil due to temperature rise. for better cooling of transformer. to act as an oil storage. None of these ANSWER DOWNLOAD EXAMIANS APP
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