Question
Reason (R): A large negative value of feedback results in a high value of return difference compared to unity which makes the feedback gain inversely proportional to the feedback factor.
a.
Both A and R are correct and R is correct explanation of A
b.
Both A and R are correct but R is not correct explanation of A
c.
A is correct but R is wrong
d.
R is correct but A is wrong
Posted under Electronics and Communication Engineering
Interact with the Community - Share Your Thoughts
Uncertain About the Answer? Seek Clarification Here.
Understand the Explanation? Include it Here.
Q. Assertion (A): A large negative feedback is deliberately introduced in an amplifier to make its gain independent of variation in parameters of active device. Reason (R): A...
Similar Questions
Explore Relevant Multiple Choice Questions (MCQs)
Q. An electromechanical device which actuates a train of step angular movements in response to a train of input pulses on one to one basis is
View solution
Q. Assertion (A): If the Laplace transform is G(s) = 4/(s²+2s+4), the Laplaces transform of impulse response is given by C(s) = 4/(s²+2s+4)
Reason (R): The Laplace transform for an impulse function is 1.
View solution
Q. The polar plot of G(jω) = 1/jω is the negative imaginary axis.
View solution
Q. The number of branches of root locus plot is equal to
View solution
Q. The action of bellows is similar to that of
View solution
Q. For a second order system ωn is natural frequency, ωd is frequency of damped oscillations and ζ is damping factor. Then
View solution
Q. In force voltage analogy the quantity analogous to spring constant K is
View solution
Q. The log magnitude curve of factor jω is a straight line having a slope of 20 dB/decade.
View solution
Q. Time rate of change in heat energy is analogous to
View solution
Q. Assertion (A): In control system velocity error is not an error in velocity but is an error in position due to a ramp input.
Reason (R): For a type of system velocity error is zero.
View solution
Q. The shape of torque-speed curve of a two phase servo- motor mostly depends on
View solution
Q. In a lag network the input frequency is 100 fc where fc is critical frequency. The voltage gain is
View solution
Q. Assertion (A): Temperature control of the passenger compartment of car uses both feed forward and feedback controls.
Reason (R): Feed forward control gives corrective action before the disturbance affects the output and feedback control applies corrective action after output changes.
View solution
Q. Assertion (A): Most of actual systems are non-linear.
Reason (R): Non linearity may be due to saturation, dead zone, square law etc.
View solution
Q. The correct sequence of events to improve system stability is
View solution
Q. Assertion (A): For an underdamped system with damping ratio ξ, the maximum overshoot is e-ξπ/(1-ξ²)^0.5
Reason (R): Peak time of a second order under damped system = π/ωd where ωd is frequency of damped oscillations.
View solution
Q. I-PD controlled system has
View solution
Q. Assertion (A): Laplace transform of impulse function is equal to area under the impulse.
Reason (R): An impulse function whose area is unity is called unit impulse function.
View solution
Q. Optical encoders most commonly used in control systems are
View solution
Q. A second order system exhibits 100% overshoot. The damping ratio is
View solution
Recommended Subjects
Are you eager to expand your knowledge beyond Electronics and Communication Engineering? We've handpicked a range of related categories that you might find intriguing.
Click on the categories below to discover a wealth of MCQs and enrich your understanding of various subjects. Happy exploring!