The unit step response of the transfer function 1/(s2 + 2s + 3) _______________________?

Related Mcqs:

1. The initial value (t = 0) of the unit step response of the transfer function [(s + 1)/(2s + 1)] is__________________?

   A. 0
   B. ½
   C. 1
   D. 2

2. The unit step response of the transfer function (2s – 1)/[(3s + 1) (4s + 1)] reaches its final steady state asymptotically after _____________?

   A. A monotonic increase
   B. A monotonic decrease
   C. Initially increasing and then decreasing
   D. Increasing decreasing and then increasing

3. In a closed loop system, the process to be controlled is an integrating process with transfer function 1/2s. The controller proposed to be used in an integral controller with transfer function 1/T1s. When a step change in set point is applied to such a closed loop system, the controlled variable will exhibit__________________?

   A. Overdamped response
   B. Underdamped response
   C. Undamped response
   D. Unstable response

4. The experimental response of the controlled variable y(t) for a step change of magnitude ‘P’ in the manipulated variable x(t) is shown below: The appropriate transfer function of the process is_________________?

   A. (Q/P) e-(Q/R)S/(TdS + 1)
   B. (Q/R) e-TdS/(Q/P) (S + 1)
   C. (Q/P) e-TdS/(Q/R) (S + 1)
   D. (Q/R) e-(P/Q)S/(TdS + 1)

5. The frequency response of a dynamic element shows a constant magnitude ratio at all frequencies. The element exhibits a negative phase shift at all frequencies. The absolute value of the phase shift increases linearly with frequency. The element has the transfer function ?

   A. e-ηS
   B. (T1S + 1)/(T2S + 1)
   C. (T1S/(T2S + 1)
   D. (T1S + 1)/(T2S

6. For two non-interacting first order systems connected in series, the overall transfer function is the ______________ of the individual transfer functions?

   A. Product
   B. Ratio
   C. Sum
   D. Difference

7. Response of a system to a sinusoidal input is called _____________ response?

   A. Impulse
   B. Unit step
   C. Frequency
   D. None of these

8. Transfer function of transportation lag is___________________?

   A. eTS
   B. e-TS
   C. 1/(Ts + 1)
   D. None of these

9. The characteristic equation for the control system with a closed loop transfer function G1/1 + G2 is given by 1 + G2 = 0. The characteristic equation for the control system_________________?

   A. Depends only upon the open loop transfer function
   B. Determines its stability
   C. Is the same for set point or load changes
   D. All A , B & C.

10. In a single tank system, the transfer function of level to inlet flow rate is__________________?

    A. R/TS
    B. R/(TS + 1)
    C. 1/TS
    D. None of these