MGVCL Exam Paper (30-07-2021 Shift 3)
Consider the following statements associated with Buchholz’s relays. Statement 1: Buchholz's relay is used for protection of a transformer against incipient faults. Statement 2: Buchholz's relay can be installed on oil cooled transformers.
Buchholz relay is used for protecting transformer against incipient or internal faults. Buchholz relay is a gas-actuated relay installed in oil immersed transformers for protection against all kinds of faults.
The capacity factor is the ratio of an actual electrical energy output over a given period of time to the maximum possible electrical energy output over that period. Nuclear power plants are at the high end of the range of capacity factors
Voltage equation for Dc shunt generator, Eb = V + Ia*Ra V = Ish*Rsh Ish = 200/100 = 2 A Eb = V + Ia*Ra 20 = Ia*Ra Ia = 20/0.2 = 100 A I = 100 - 2 = 98 A
EXAMIANS