6.A synchronous motor connected to an infinite bUB takes power at a lag p.f. If its excitation is increased

7.An alternator has a phase sequence of RYB for its phase voltage. In case the direetior of rotation of alternator is reversed, the phase sequence will become

8.When a d.c source is switched is purely inductive, the current response is

9.In case ora 3 phase short circuit in a system the power fed into the system is

10.In a 3-core extra-high voltage cable, a metallic screen around each core�i,..ulation i. provided to