Control Systems Error at corner frequency ωcf of first order control system is ------- ±2 db ±4 db ±3 db ±1 db ±2 db ±4 db ±3 db ±1 db ANSWER DOWNLOAD EXAMIANS APP
Control Systems The system function N(s) = V(s)/I(s) = (s+3)/(4s+5). The system is initially at rest. If the excitation i(t) is a unit step, which of the following is the final value? 1/4 1 0 3/5 1/4 1 0 3/5 ANSWER DOWNLOAD EXAMIANS APP
Control Systems The impulse response of a linear system is e-t, (t > 0). The corresponding transfer function is 1/s(s+1) 1/s 1/(s+1) s/(s+1) 1/s(s+1) 1/s 1/(s+1) s/(s+1) ANSWER DOWNLOAD EXAMIANS APP
Control Systems The following transfer function represents a phase-lead compensator? (s+4)/(s+6) (s+4)/(3s+6) (4s+2)/(6s+1) 1/s (s+4)/(s+6) (s+4)/(3s+6) (4s+2)/(6s+1) 1/s ANSWER DOWNLOAD EXAMIANS APP
Control Systems A cascade of three linear time invariant systems is causal and unstable. From this we conclude that 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. 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. each system in the cascade is individually caused and unstable. ANSWER DOWNLOAD EXAMIANS APP
Control Systems The value of gain margin of the system having G ( s )H ( s ) = 8 / ( s + 2 )3 is 2. 4. 8. 6. 2. 4. 8. 6. ANSWER DOWNLOAD EXAMIANS APP
EXAMIANS