For the following questions answer them individually
If resistance is 20 Ω and inductance is 2H in a RL series circuit, then time constant of this circuit will be
The positive, negative and zero sequence impedances of 3-phase synchronous generator are j 0.5 pu, j 0.3 pu and j 0.2 pu respectively. When symmetrical fault occurs on the machine terminals. Find the fault current. The generator neutral is grounded through reactance of j0.1 pu
The efficiency normally obtained in a circuit under the conditions of maximum power transfer is