A control system whose step response is -0.5(1+e^-2t) is cascaded to another control block whose impulse response is e^-t. What is the transfer function of the cascaded combination?(a) 1/(s+2)(s+1)(b) 1/(s+1)s(c) 1/(s+3)(d) 0.5/(s+1)(s+2)The question was asked in a job interview.Query is from Transfer Functions topic in section Mathematical Models of Physical Systems of Control Systems

A control system whose step response is -0.5(1+e^-2t) is cascaded to a

1.	A control system whose step response is -0.5(1+e^-2t) is cascaded to another control block whose impulse response is e^-t. What is the transfer function of the cascaded combination?(a) 1/(s+2)(s+1)(b) 1/(s+1)s(c) 1/(s+3)(d) 0.5/(s+1)(s+2)The question was asked in a job interview.Query is from Transfer Functions topic in section Mathematical Models of Physical Systems of Control Systems
Answer» Right choice is (a) 1/(s+2)(s+1) To elaborate: Solution: Laplace transform is the transformation that transforms the time DOMAIN into FREQUENCY domain and of both the cascaded systems are 1/(s+1)(s+2).

Discussion

No Comment Found

Related InterviewSolutions

A signal flow graph is the graphical representation of the relationships between the variables of set linear algebraic equations.(a) True(b) FalseI got this question in homework.Question is from Signal Flow Graphs topic in section Mathematical Models of Physical Systems of Control Systems
The overall transfer function of two blocks in parallel are :(a) Sum of individual gain(b) Product of individual gain(c) Difference of individual gain(d) Division of individual gainThis question was posed to me during an interview.I'd like to ask this question from Block diagram Algebra topic in division Mathematical Models of Physical Systems of Control Systems
The advantage of block diagram representation is that it is possible to evaluate the contribution of each component to the overall performance of the system.(a) True(b) FalseThis question was addressed to me during an interview.This is a very interesting question from Block diagram Algebra topic in chapter Mathematical Models of Physical Systems of Control Systems
The closed loop gain of the system shown in the given figure is :(a) -9/5(b) -6/5(c) 6/5(d) 9/5I got this question in semester exam.Question is from Block diagram Algebra topic in section Mathematical Models of Physical Systems of Control Systems
Which of the following is not the feature of modern control system?(a) Quick response(b) Accuracy(c) Correct power level(d) No oscillationThe question was asked during an internship interview.The above asked question is from Transfer Functions topic in section Mathematical Models of Physical Systems of Control Systems
The transfer function from D(s) to Y(s) is :(a) 2/3s+7(b) 2/3s+1(c) 6/3s+7(d) 2/3s+6The question was asked in homework.Asked question is from Block diagram Algebra topic in chapter Mathematical Models of Physical Systems of Control Systems
A transfer function has two zeroes at infinity. Then the relation between the numerator(N) and the denominator degree(M) of the transfer function is:(a) N=M+2(b) N=M-2(c) N=M+1(d) N=M-1The question was posed to me during an interview.I'm obligated to ask this question of Transfer Functions topic in chapter Mathematical Models of Physical Systems of Control Systems
The principle of homogeneity and superpositionare applied to:(a) Linear time invariant systems(b) Nonlinear time invariant systems(c) Linear time variant systems(d) Nonlinear time invariant systemsI have been asked this question in unit test.My doubt stems from Transfer Functions in chapter Mathematical Models of Physical Systems of Control Systems
Assertion (A): Servomotors have heavier rotors and lower R/X ratio as compared to ordinary motors of similar ratings.Reason (R): Servomotor should have smaller electrical and mechanical time constants for faster response.Reason (R): Servomotor should have smaller electrical and mechanical time constants for faster response.(a) Both A and R are true and R is the correct explanation of A(b) Both A and R are true but R is not correct explanation of A(c) A is true but R is false(d) A is false but R is trueThe question was asked in examination.My question is from Differential Equations of Physical Systems and Dynamics of Robotic Mechanisms topic in portion Mathematical Models of Physical Systems of Control Systems
Backlash in a stable control system may cause:(a) Under damping(b) Over damping(c) High level oscillations(d) Low level oscillationsThe question was posed to me in an online quiz.My question is from Differential Equations of Physical Systems and Dynamics of Robotic Mechanisms in division Mathematical Models of Physical Systems of Control Systems

Discussion

No Comment Found

Related InterviewSolutions

Reply to Comment