A $220-$V dc compound motor rated at $10$ HP $($output power$)$ has a full$-$load efficiency ol $76\%.$ The shunt field, series and armature resistances are $60$ ohms, $0\mathrm{.}1$ and $0\mathrm{.}5$ ohm respectively. A$.$ Il connected as short shunt, what starter resistance will be required to limit the armature current at starting to $150\%$ of its rated armature current? B$.$ If connected as long shunt, what starter resistance will be required to limit the armature current at starting to $150\%$ of its rated armatute current?