The phase lag produced by transportation relays_____________?

Related Mcqs:

1. A phase lag lead network introduces in the output_______________?

   A. lag at all frequencies
   B. lag at high frequencies and lead at low frequencies
   C. lag at low frequencies and lead at high frequencies
   D. none of the above

2. Which of the following statements is correct for a system with gain margin close to unity or a phase margin close to zero ?

   A. The system is relatively stable
   B. The system is highly stable
   C. The system is highly oscillatory
   D. None of the above

3. Phase margin of a system is used to specify which of the following ?

   A. Frequency response
   B. Absolute stability
   C. Relative stability
   D. Time response

4. Which of the following statements is not necessarily correct for open control system ?

   A. Input command is the sole factor responsible for providing the control action
   B. Presence of non-linearities causes malfunctioning
   C. Less expensive
   D. Generally free from problems of non-linearities

5. A closed loop system is distinguished from open loop system by which of the following ?

   A. Servomechanism
   B. Feedback
   C. Output pattern
   D. Input pattern

6. Which of the following statements is correct for any closed loop system ?

   A. All the co-efficients can have zero value
   B. All the co-efficients are always non-zero
   C. Only one of the static error co-efficients has a finite non-zero value
   D. None of the above

7. The transient response of a system is mainly due to________________?

   A. inertia forces
   B. internal forces
   C. stored energy
   D. friction

8. Which of the following is the definition of proportional band of a controller ?

   A. The range of air output as measured variable varies from maximum to minimum
   B. The range of measured variables from set value
   C. The range of measured variables through which the air output changes from maximum to minimum
   D. Any of the above
   F. None of the above

9. The type 2 system has __________ at the origin?

   A. no net pole
   B. net pole
   C. simple pole
   D. two poles

10. The type 0 system has ___________ at the origin?

    A. no pole
    B. net pole
    C. simple pole
    D. two poles
    F. none of the above