MGVCL Exam Paper (30-07-2021 Shift 1)
Consider the following two statements and choose the correct answer. Statement 1: The V-curves of a synchronous motor show relationship between armature current and supply voltage. Statement 2: The plot of power factor against the field current of synchronous motor is known as inverted V curves.
The V-curves of a synchronous motor show relationship between Armature current (Ia) and Excitation current (If). The Inverted V-curves of a synchronous motor show relationship between power factor (pf) and field excitation (If).
In DC microgrid system, Efficiency α 1/Pin For 1 kW loss injecting power is 20 kW For 1.5 kW loss injecting power will be proportional to 30 kW So, Efficiency will be reduced 0.025