Automatic Control Systems If any term in the first column of a Routh array becomes zero, then Routh criterion can be used by substituting a small positive number for zero and completing the array Routh criterion can be used by substituting a big positive number for zero and completing the array Routh criterion can be used by substituting a small negative number for zero and complet-ing the array Routh criterion cannot be used to determine stability Routh criterion can be used by substituting a small positive number for zero and completing the array Routh criterion can be used by substituting a big positive number for zero and completing the array Routh criterion can be used by substituting a small negative number for zero and complet-ing the array Routh criterion cannot be used to determine stability ANSWER DOWNLOAD EXAMIANS APP
Automatic Control Systems Which of the following can be used as a rotating amplifier in a control system? 1. Amplidyne 2. Separately excited dc generator 3. Synchro 4. Self excited dc generator 1, 2 and 3 3 and 4 1 and 2 All 1, 2 and 3 3 and 4 1 and 2 All ANSWER DOWNLOAD EXAMIANS APP
Automatic Control Systems Gain margin and phase margin can be determined from Bode plots as well as Nyquist plot. False True False True ANSWER DOWNLOAD EXAMIANS APP
Automatic Control Systems Which of the following is used to obtain output position in a position control system? Load cell Strain gauge Synchro Thermistor Load cell Strain gauge Synchro Thermistor ANSWER DOWNLOAD EXAMIANS APP
Automatic Control Systems A conditionally stable system is stable for the value of gain between two critical values. It is unstable if Both A and B The gain is increased beyond upper critical value The gain is decreased below lower critical value None of these Both A and B The gain is increased beyond upper critical value The gain is decreased below lower critical value None of these ANSWER DOWNLOAD EXAMIANS APP
Automatic Control Systems A lag compensator Speeds up the transient response of the system Improves steady state behavior and speeds up the transient response of the system Improves steady state behavior and preserves the transient response of the system Improves steady state behavior of the system Speeds up the transient response of the system Improves steady state behavior and speeds up the transient response of the system Improves steady state behavior and preserves the transient response of the system Improves steady state behavior of the system ANSWER DOWNLOAD EXAMIANS APP
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