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

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

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

## Related questions

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.

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.

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.

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.

Description : Consider a continuous-time system with input x(t) & output y(t) are related by y(t) = x (sin t). This system is (A) causal & linear (B) non-causal & linear (C) causal & non-linear (D) non-causal & non-linear

Last Answer : Consider a continuous-time system with input x(t) & output y(t) are related by y(t) = x (sin t). This system is non-causal & linear

Description : If a step function is applied to the input of a system and the output remains below a certain level for all the time, the system is?

Last Answer : If a step function is applied to the input of a system and the output remains below a certain level for all the time, the system is not necessarily stable.

Description : Introduction of integral action in the forward path of a unity feedback system results in a  A) Marginally stable system B) System with no steady state error C) System with increased stability margin D) System With better speed of response

Last Answer : Introduction of integral action in the forward path of a unity feedback system results in a System with no steady state error

Description : My Best Buy credit card is out of control can I negotiate with them somehow for a reduction?

Last Answer : answer:Best bet is to pay off higher balances first. If you can throw more money into the best buy card, you should. You can negotiate to lower the premium, but you will likely have to close the ... . Matter of fact, if your bb account has been in good standing, they may negotiate interest, too.

Description : If a super villain's powers were going to be released by something beyond their control or knowledge (sort of like if Bruce Banner somehow didn't know anger turned him into The Hulk), what's a good thing to set the super villain off?

Last Answer : When he falls asleep the powers take over, Fight Club style. Or he could experience periodic blackouts and bouts of amnesia which are a result of his memory blocking out the usage of his powers. Or you ... could also do something like Hulking out but he just has no memory of it when he wakes up.

Description : Draw typical wiring details & four specifications of AC output module of PLC.

Last Answer : The below figure show the basic field wiring for digital 120V AC output module. The Wiring diagrams show how wires of output devices are connected to screw terminals of PLC modules. As per the wiring ... excessive current from damaging the wiring to the field devices.  Specifications:-

Description : List any four input and four output devices used with PLC.

Last Answer : Input device: 1. Push button. 2. Temperature switches. 3. Limit switches. 4. Pressure switches. 5. Level Switches. 6. Proximity Switches. Output devices: 1. Motor. 2. Display. 3. Heater coil. 4. Relay. 5. Lamp. 6. Buzzer.

Description : A phase lag lead network introduces in the output?

Last Answer : A phase lag lead network introduces in the output lag at low frequencies and lead at high frequencies.

Description : Any externally introduced signal affecting the controlled output is called a?

Last Answer : Any externally introduced signal affecting the controlled output is called a stimulus.

Description : The initial response when the output is not equal to input is called?

Last Answer : The initial response when the output is not equal to input is called Transient response.

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 .

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).

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

Last Answer : the output is independent of output

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

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

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

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

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

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

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.

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

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°

Description : 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

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.

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.

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

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

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

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.

Description : _____is an open loop control system.

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

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

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

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.

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.

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

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.

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

Description : What is the output of the light dependent cycle?

Description : Which of the following statement(s) is/are true concerning oxygen delivery? a. The amount of oxygen delivered to peripheral tissues is dependent upon the oxygen content in arterial blood and cardiac ... O2/dL d. Normal systemic oxygen delivery for a typical adult is approximately 1000 cc/min

Last Answer : Answer: a, c, d The amount of oxygen that is delivered to peripheral tissues is the product of the oxygen content in arterial blood times the cardiac output. Normally, oxygen content of arterial blood is ... of venous blood is 16 cc/dL. Hence, the normal arterial-venous difference is 4 cc O2/dL

Description : What is the output of print 0.1 + 0.2 == 0.3? a) True b) False c) Machine dependent d) Error

Last Answer : Answer: b Explanation: Neither of 0.1, 0.2 and 0.3 can be represented accurately in binary. The round off errors from 0.1 and 0.2 accumulate and hence there is a difference of 5.5511e-17 between (0.1 + 0.2) and 0.3.

Description : The variable which impacts the relationship between an independent variable and a dependent variable is known as (A) antecedent variable (B) precedent variable (C) predictor variable (D) control variable

Last Answer : (D) control variable

Description : Does cannabis cause your immune system to somehow malfunction?

Last Answer : Yes it does, because cannabis contain a lot of harmful things which does not adapt to some people body which attack my immune system

Description : The mechanism which changes the value of manipulated variable in response to the output signal from the control unit is called the (A) Final control element (B) On-off control (C) Floating control action (D) None of these

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

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.

Description : Regarding the antibacterial action of gentamicin, which one of the following statements is most accurate? (a) Efficacy is directly proportionate to the time that the plasma level of the drug is ... an inhibitor of cell wall synthesis (e) The antibacterial action of gentamicin is time - dependent