A unity feedback system has the open loop transfer function $$G\left( s \right) = {1 \over {\left( {s - 1} \right)\left( {s + 2} \right)\left( {s + 3} \right)}}$$
The Nyquist plot of $$G$$ encircle the origin

If the $$HLT$$ instruction of a $$8085$$ microprocessor is executed,

All the resistances in the circuit of Fig. are of 1 $$\Omega$$ each. The value of current 'I' is

Resistances in the circuit of fig. are of R $$\Omega$$ each. The switch is initially open. What happens to the lamp's intensity when the switch is closed?