For a type three-control system the asymptote at lower frequency will have a slope...

For a type three-control system the asymptote at lower frequency will have a slope 

A) – 6 db per octave B) – 18 db per octave C) – 20 db per octave D) – 60 db per octave
by

1 Answer

Answer :

b
by

Related questions

Asymptote in a logistic growth curve is obtained when (a) K = N (b) K > N(c) K < N (d) the value of ‘r’ approaches zero

Description : Asymptote in a logistic growth curve is obtained when (a) K = N (b) K > N (c) K < N (d) the value of ‘r’ approaches zero

Last Answer : (a) K = N

Asymptote in a logistic growth curve is obtained when : (1) K = N (2) K > N (3) K < N (4) The value of 'r' approaches zero

Description : Asymptote in a logistic growth curve is obtained when : (1) K = N (2) K > N (3) K < N (4) The value of 'r' approaches zero

Last Answer : (1) K = N

The loop transfer of a system is G(s) H(s) = 5/(s+1) (2s+1)(3s+1) which has the phase crossover frequency

Description : The loop transfer of a system is G(s) H(s) = 5/(s+1) (2s+1)(3s+1) which has the phase crossover frequency fc = 0.16 Hz. The gain margin (dB) of the system is  (a) 6 (b) 4 (c) 2 (d) 0

Last Answer : The loop transfer of a system is G(s) H(s) = 5/(s+1) (2s+1)(3s+1) which has the phase crossover frequency fc = 0.16 Hz. The gain margin (dB) of the system is 6

For a 2nd order servo system, the damping ratio δ = 0.5456 and undamped natural frequency is

Description : For a 2nd order servo system, the damping ratio δ = 0.5456 and undamped natural frequency is ωn = 31.6 rad/sec. The percent overshoot is  (a) 7.07 (b) 10.2 (c) 14.10 (d) 21.21

Last Answer : For a 2nd order servo system, the damping ratio δ = 0.5456 and undamped natural frequency is ωn = 31.6 rad/sec. The percent overshoot is 14.10

For a feedback control system of type 2, the steady error for a rap input is

Description : For a feedback control system of type 2, the steady error for a rap input is  A) Infinite B) Constant C) Zero D) Indeterminate

Last Answer : For a feedback control system of type 2, the steady error for a rap input is Zero 

Draw the labeled block diagram of process control system and explain each block.

Description : Draw the labeled block diagram of process control system and explain each block.

Last Answer : Explanation - Process control system consists of process or plant, sensor, error detector, automatic Controller, actuator or control element. 1) Process or plant- process means some manufacturing sequence ... process which changes the process variable. Output of this block is denoted by u .

Explain the significance of the Laplace transform in control system.

Description : Explain the significance of the Laplace transform in control system.

Last Answer : Significance of Laplace Transform- * Laplace transform convert higher order integral differential equation into simple algebraic form. * Laplace transform converts the differential equation into an algebraic ... equations. * Laplace transform convert time domain to frequency domain (s-plane). 

The open loop control system is one in which _____.

Description : The open loop control system is one in which _____.

Last Answer : the output is independent of output

In a control system, the comparator measures the difference between

Description : In a control system, the comparator measures the difference between (a) output and input (b) output of controller and system (c) actual and desired performance (d) input and error signal  

Last Answer : B

For a stable feedback control system, the phase margin is

Description : For a stable feedback control system, the phase margin is  a) always positive b) always negative c) may be positive or negative d) always greater than 180o

Last Answer : For a stable feedback control system, the phase margin is always positive

For a 2nd order feedback control system, the peak resonance magnitude should be Mp ≤ 1.15. Hence the

Description : For a 2nd order feedback control system, the peak resonance magnitude should be Mp ≤ 1.15. Hence the damping ratio (δ) is  (a) 0.1 (d) 0.5 (c) 0.707 (d) 1

Last Answer : For a 2nd order feedback control system, the peak resonance magnitude should be Mp ≤ 1.15. Hence the damping ratio (δ) is 0.5

In order to regulate steady state error to zero, in a negative feedback control system, one employs

Description : In order to regulate steady state error to zero, in a negative feedback control system, one employs

Last Answer : In order to regulate steady state error to zero, in a negative feedback control system, one employs Integral control

A differentiator is not usually used in control system, because it : -

Description : A differentiator is not usually used in control system, because it : - (A) reduces damping  (B) increases error  (C) reduces gain margin  (D) increases input noise

Last Answer : A differentiator is not usually used in control system, because it : - increases input noise

A unity negative feedback control system is found to have a gain margin of 20 dB. The Nyquist plot of the

Description : A unity negative feedback control system is found to have a gain margin of 20 dB. The Nyquist plot of the system (A) crosses the real axis at +0.1 (B) crosses the real axis at -0.1. (C) crosses the imaginary axis at -0.1 (D) crosses the imaginary axis at +0.1

Last Answer : A unity negative feedback control system is found to have a gain margin of 20 dB. The Nyquist plot of the system crosses the real axis at -0.1.

Negative feedback in a closed-loop control system DOES NOT

Description : Negative feedback in a closed-loop control system DOES NOT (A) reduce the overall gain (B) reduce bandwidth (C) improve disturbance rejection (D) reduce sensitivity to parameter variation

Last Answer : Negative feedback in a closed-loop control system DOES NOT reduce bandwidth

In the Bode plot of a unity feedback control system, the value of phase of G(jw) at the gain cross -over...

Description : In the Bode plot of a unity feedback control system, the value of phase of G(jw) at the gain cross -over frequency is - 125°.. The phase margin of the system is (a) - 125° (b) - 55° (c) 55° (d) 125°

Last Answer : In the Bode plot of a unity feedback control system, the value of phase of G(jw) at the gain cross -over frequency is - 125°.. The phase margin of the system is 55°

In a closed loop control system ...

Description : In a closed loop control system  (a) control action depends upon the output and also on the input command (b) output signal is fed back to be compared with the reference signal (c) the accuracy is better than in the open loop system (d) all of the above

Last Answer : In a closed loop control system control action depends upon the output and also on the input command , output signal is fed back to be compared with the reference signal , the accuracy is better than in the open loop system. 

In a closed-loop system in which the output is the speed of a motor, the output rate control can be used to_________.

Last Answer : In a closed-loop system in which the output is the speed of a motor, the output rate control can be used to limit the acceleration of the motor.

The first order control system, which is well designed, has a?

Description : The first order control system, which is well designed, has a?

Last Answer : The first order control system, which is well designed, has a large negative transfer function pole.

In a control system integral error compensation _______ steady state error.

Description : In a control system integral error compensation _______ steady state error.

Last Answer : In a control system integral error compensation minimizes steady state error.

A differentiator is usually not a part of a control system because it?

Last Answer : A differentiator is usually not a part of a control system because it increases input noise.

In a control system the output of the controller is given to?

Description : In a control system the output of the controller is given to?

Last Answer : In a control system the output of the controller is given to final control element.

A control system with excessive noise, is likely to suffer from?

Description : A control system with excessive noise, is likely to suffer from?

Last Answer : A control system with excessive noise, is likely to suffer from saturation in amplifying stages.

_____is an open loop control system.

Description : _____is an open loop control system.

Last Answer : Field controlled D.C. motor is an open loop control system.

The output of a feedback control system must be a function of?

Description : The output of a feedback control system must be a function of?

Last Answer : The output of a feedback control system must be a function of reference and output.

An automatic toaster is a ______ loop control system.

Description : An automatic toaster is a ______ loop control system.

Last Answer : An automatic toaster is an open loop control system.

A control system working under unknown random actions is called

Description : A control system working under unknown random actions is called 

Last Answer : A control system working under unknown random actions is called stochastic control system.

In closed loop control system, with positive value of feedback gain the overall gain of the system will

Description : In closed loop control system, with positive value of feedback gain the overall gain of the system will

Last Answer : In closed loop control system, with positive value of feedback gain the overall gain of the system will decrease.

A control system in which the control action is somehow dependent on the output is known as

Description : A control system in which the control action is somehow dependent on the output is known as?

Last Answer : A control system in which the control action is somehow dependent on the output is known as Closed loop system.

In an open loop control system?

Last Answer : In an open loop control system Output is independent of control input.

What are the advantages of open loop control system?

Description : What are the advantages of open loop control system?

Last Answer : Open loop control system are simple to design. Open loop control system are generally stable.

what is open loop and close loop control system?

Description : what is open loop and close loop control system?

Last Answer : A) In open loop system the input is independent         of output but output is depends on input. A-1. no feedback path in open loop s/m    -2. less accuracy than close loop s/m. Ex. Washing ...    -3. high accuracy. Ex. Air conditioner ( AC ), rocket launcher, radar          system, etc

A system has 14 poles and 2 zeros in its open -loop transfer function. The slope of its highest frequency ...

Description : A system has 14 poles and 2 zeros in its open -loop transfer function. The slope of its highest frequency asymptote in its magnitude plot is (a) - 40 dB/dec (b) - 240 dB/dec (c) + 40 dB/dec (d) + 240 dB/dec

Last Answer : A system has 14 poles and 2 zeros in its open -loop transfer function. The slope of its highest frequency asymptote in its magnitude plot is (a) - 40 dB/dec (b) - 240 dB/dec (c) + 40 dB/dec (d) + 240 dB/dec

The elasticity of a demand curve with a constant slope (a) Increases at higher price ; (b) Decreases at higher price; (c) Increases at lower price ; (d) Remains constant

Description : The elasticity of a demand curve with a constant slope (a) Increases at higher price ; (b) Decreases at higher price; (c) Increases at lower price ; (d) Remains constant

Last Answer : (a) Increases at higher price ;

State the principle of ON-OFF control action. Write its standard equation & define neutral zone.

Description : State the principle of ON-OFF control action. Write its standard equation & define neutral zone.

Last Answer : This is one of the most common & simplest mode of controller. * It has to control two positions of control element, either on or off hence this mode is called as ON OFF controller, it is ... cycling. * The existence of such a neutral zone is an example of desirable hysteresis in a system.

The standard for long distance analog signal transmission in process control industry is

Description : The standard for long distance analog signal transmission in process control industry is (A) 4-20 mV (B) 0-20 mA (C) 4-20 mA (D) 0-5 V

Last Answer : The standard for long distance analog signal transmission in process control industry is 4-20 mA

In pneumatic control systems the control valve used as final control element converts

Description : In pneumatic control systems the control valve used as final control element converts 

Last Answer : In pneumatic control systems the control valve used as final control element converts pressure signal to position change.

In a frequency-domain plot, thehorizontal axis measures the________. A) peak amplitude B) frequency C) phase D) slope

Description : In a frequency-domain plot, thehorizontal axis measures the________. A) peak amplitude B) frequency C) phase D) slope

Last Answer : frequency

What is the steady state error of type-0 system for ramp input?

Description : What is the steady state error of type-0 system for ramp input?  A) ∞ B) A/K C) A/(1+K) D) 0

Last Answer : What is the steady state error of type-0 system for ramp input?  A) ∞ B) A/K C) A/(1+K) D) 0

In case of type-1 system steady state acceleration is?

Description :  In case of type-1 system steady state acceleration is?

Last Answer :  In case of type-1 system steady state acceleration is infinity.

The position and velocity errors of a type-2 system are?

Description : The position and velocity errors of a type-2 system are?

Last Answer : The position and velocity errors of a type-2 system are zero, constant.

The type 2 system has ______at the origin.

Description : The type 2 system has ______at the origin.

Last Answer : The type 2 system has two poles at the origin.

The type 1 system has ______ at the origin.

Description : The type 1 system has ______ at the origin.

Last Answer : The type 1 system has simple pole at the origin.

The type 0 system has ______ at the origin.

Description : The type 0 system has ______ at the origin.

Last Answer : The type 0 system has no pole at the origin.

Pick up the correct statement from the following: (A) The throat of the section of a control meter is either rectangular or trapezoidal (B) The floor of the control meter throat is almost level (C) The floor of the expanding outlet of the control meter is given a steep slope (D) All the above

Description : Pick up the correct statement from the following: (A) The throat of the section of a control meter is either rectangular or trapezoidal (B) The floor of the control meter throat is almost level (C) The floor of the expanding outlet of the control meter is given a steep slope (D) All the above

Last Answer : Answer: Option D

Define servo system. Draw the block diagram of DC Servo System.

Description : Define servo system. Draw the block diagram of DC Servo System.

Last Answer : Definition: Servo system is defined as automatic feedback control system working on error signals giving the output as mechanical position, velocity or acceleration.  1) The servo system consists of error ... , DC motor, DC gear system and the DC load whose position is to be changed. 

Define stability. Sketch the root locations in the s-plane for stable and unstable system.

Description : Define stability. Sketch the root locations in the s-plane for stable and unstable system.

Last Answer : Stability: The system is said to be stable if it produces bounded output for a bounded input. It is used to define usefulness of the system. The stability implies that the system performance should not ... absence of the input, output may not return to zero it shows certain output without input. 

What will happen to the gain margin if the gain of the open loop system is doubled?

Description : What will happen to the gain margin if the gain of the open loop system is doubled? A) Doubled B) Becomes half C) Is not affected D) Becomes one-fourth 

Last Answer : What will happen to the gain margin if the gain of the open loop system is doubled? A) Doubled B) Becomes half C) Is not affected D) Becomes one-fourth 

What is the time response of a system whose poles lie on the right hand side of s-plane?

Description : What is the time response of a system whose poles lie on the right hand side of s-plane? A) Exponentially increasing B) Exponentially decreasing C) Sinusoidal oscillations D) Step response 

Last Answer : What is the time response of a system whose poles lie on the right hand side of s-plane? A) Exponentially increasing B) Exponentially decreasing C) Sinusoidal oscillations D) Step response 

A system is critically damped. If the gain of the system is increased, the system will behave as:

Description : A system is critically damped. If the gain of the system is increased, the system will behave as: A) overdamped B) underdamped C) oscillatory D) critically damped

Last Answer : A system is critically damped. If the gain of the system is increased, the system will behave as: underdamped