Control Systems
Which of the following is/are the characteristics of negative feedback control system?

 Rejection of disturbance signals
All of these
 Low sensitivity to parameter variations
 Reduction in gain at the expense of better stability

ANSWER DOWNLOAD EXAMIANS APP

Control Systems
A cascade of three linear time invariant systems is causal and unstable. From this we conclude that

 each system in the cascade is individually caused and unstable.
 the majority are unstable and the majority are causal.
 at least one system is causal and all systems are unstable.
 at least one system is unstable and at least one system is causal.

ANSWER DOWNLOAD EXAMIANS APP