A. 2/s2
B. 4/s2
C. 2/s3
D. 4/s3
Related Mcqs:
- The Laplace transform of exp(at), where a > 0, is defined only for the Laplace parameter, s > a since______________?
A. The function is exponential
B. The Laplace transform of integral of exp(at) has finite values only for s > a
C. The Laplace transform integral of exp(at) has initial values only for s > a
D. The function exp(at) is piece-wise continuous only for s > a - What is the Laplace transform of impulse input having magnitude „X‟ ?
A. X
B. X2
C. 1/X
D. 1 - The inverse Laplace transform of the function f(S) = 1/S (1 + S) is_________________?
A. 1 + et
B. 1 – et
C. 1 + e-t
D. 1 – e-t - For the time domain function f(t) = t, the Laplace transform of ∫0 t f(t) dt is given by___________________?
A. 1/2 S3
B. 2/S3
C. 1/S3
D. 2/S2 - What is the Laplace transform of sin t ?
A. 1/(s2 + 1)
B. s/(1 + s2)
C. 1/(s2 – 1)
D. s/(s2 – 1) - What is the ratio of output amplitude to input amplitude for a sinusoidal forcing function in a first order system ?
A. 1
B. > 1
C. < 1
D. None of these - Phase lag of the frequency response of a second order system to a sinusoidal forcing function______________?
A. Is 30°
B. Is 90° at the most
C. Approaches 180° asymptotically
D. Is 120° - An ideal PID controller has the transfer function [1 + (1/0.55) + 0.25]. The frequency at which the magnitude ratio of the controller is 1, is________________?
A. 0.5/0.2
B. 0.2/0.5
C. 0.2 × 0.5
D. 1/√(0.2 × 0.5) - The transfer function for a P-D controller is________________?
A. Kc(1+ηD s)
B. Kc(1 +1/ηD s)
C. Kc ηD s
D. Kc/ηD s - 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
