Which elements are not present in the original McMurray inverter but are present in the modified McMurray inverters?

Which elements are not present in the original McMurray inverter but are present in the modified McMurray inverters? Correct Answer Two auxiliary diodes and the damping resistor

In the original inverter circuit given by McMurray the elements DA1, DA2 and the damping resistor Rd were not present.

Related Questions

In the single-phase modified McMurray full-bridge inverter, for commutating the main SCRs T1 and T2
In stepped wave inverters, one of the inverters are gated such as to obtain