Question

Q (1): Determine the stability of the systems whose characteristic equation are given
below.
(a) s
2+10s3+30s2+100s+25=0
(b) s
5+13s4+54s3+82s2+170s+330=0
(c) s
4+s3+5s2+4s+4=0

Answer 1

If all the roots of the characteristic equation exist to the left half of the 's' plane, then the control system is stable. If at least one root of the characteristic equation exists to the right half of the 's' plane, then the control system is unstable

Answer 2

Ice is more effective in cooling than water at the same temperature because ice can absorb latent heat as well as the heat energy in order to attain room temperature. Water at 0 C can absorb heat energy only to attain the room temperature.

Answer 3

Ice is more effective in cooling than water at the same temperature because ice can absorb latent heat as well as the heat energy in order to attain room temperature. Water at 0 C can absorb heat energy only to attain the room temperature.