engineering recuitment BEL Probationary Engineers Mock Test 2025 Control Systems Stability Analysis Condition For Stability
Which of the following systems are marginally stable?
1. e-2t sin 3t u(t)
2. t u(t)
3. u(t)
4. sin ωt u(t)
1
1, 2 and 4 only
2
2, 3 and 4 only
3
3 and 4 only
4
2, 3 only