MGVCL Exam Paper (30-07-2021 Shift 1)
A coil having an inductance of 100 mH is magnetically coupled to another coil having an inductance of 900 mH. The coefficient of coupling between the coils is 0.45. Calculate the equivalent inductance if the two coils are connected in series aiding.
Tank - Name of power station - capacity 1 - Vindhyachal Thermal Power Station - 4,760MW. 2 - Mundra Thermal Power Station - 4620 MW 3 - The Sasan Ultra Mega power plant - 3960 MW 4 - The Tiroda thermal power plant - 3300 MW
Intern turn winding fault can be easily detect by differential protection relay. Also detect by buchholz relay (gas operated relay), cause buchholz relay is used to detect the internal fault of transformer.
A form of AC testing that applies voltage and measures the leakage/loss current of electrical insulation. It is a type of insulation testing used to evaluate the integrity of electrical insulation.
EXAMIANS