A signal other than the reference input that tends to affect the value of controlled variable is known as ?

A signal other than the reference input that tends to affect the value of controlled variable is known as ?
by

1 Answer

Answer :

A signal other than the reference input that tends to affect the value of controlled variable is known as disturbance.

by

Related questions

_________is the reference input minus the primary feedback.

Description : _________is the reference input minus the primary feedback.

Last Answer : Actuating signal is the reference input minus the primary feedback.

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

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.

An absolutely integrable signal x(t) is known to have a pole at s = 2. Which one of the following

Description : An absolutely integrable signal x(t) is known to have a pole at s = 2. Which one of the following is true ? (A) B, C and D are true (B) x(t) can be left-sided (C) x(t) can be right-sided (D) x(t) can be both-sided

Last Answer : An absolutely integrable signal x(t) is known to have a pole at s = 2. Which one of the following is true ? (A) B, C and D are true (B) x(t) can be left-sided (C) x(t) can be right-sided (D) x(t) can be both-sided

Which type of optical fiber (multimode or single mode) tends to have lower loss and produces less signal distortion?

Description : Which type of optical fiber (multimode or single mode) tends to have lower loss and produces less signal distortion?

Last Answer : Single mode fiber.

With the knowledge of the state variable representation of a plant the transfer function of the plant

Description : With the knowledge of the state variable representation of a plant the transfer function of the plant 

Last Answer : With the knowledge of the state variable representation of a plant the transfer function of the plant can be determined completely

The state equations in the phase variable canonical form can be obtained from the transfer function by

Description : The state equations in the phase variable canonical form can be obtained from the transfer function by (a) Cascade decomposition (b) Direct decomposition (c) Inverse decomposition (d) Parallel decomposition

Last Answer : The state equations in the phase variable canonical form can be obtained from the transfer function by Direct decomposition

Difference at any instant between the value of the controlled variable and the set point is called the (A) Deviation (B) Derivative time (C) Error ratio (D) Differential gap

Description : Difference at any instant between the value of the controlled variable and the set point is called the (A) Deviation (B) Derivative time (C) Error ratio (D) Differential gap

Last Answer : Option A

During combustion of gaseous fuels, deficiency of air (A) Lengthens the flame (B) Tends to shorten the flame (C) Does not affect the flame length (D) Increases the flame temperature

Description : During combustion of gaseous fuels, deficiency of air (A) Lengthens the flame (B) Tends to shorten the flame (C) Does not affect the flame length (D) Increases the flame temperature

Last Answer : (A) Lengthens the flame

A rise in temperature (A) Normally tends to increase the reaction rate (B) Does not affect a catalysed reaction (C) Does not affect photo-chemical reaction rates (D) All (A), (B) and (C)

Description : A rise in temperature (A) Normally tends to increase the reaction rate (B) Does not affect a catalysed reaction (C) Does not affect photo-chemical reaction rates (D) All (A), (B) and (C)

Last Answer : (D) All (A), (B) and (C)

Draw the block diagram of discrete input module & explain each block.

Description : Draw the block diagram of discrete input module & explain each block.

Last Answer : Power conversion: It consists of rectifier which converts the incoming AC signal to a pulsating dc level, which is passed through filter and other logic in order to deliver a clean and denounced dc ... Logic section: It passes the input signal to the module s input address LED and the CPU.

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

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.

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

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 

If stability error for step input and speed of response be the criteria for design, what controller would you

Description : If stability error for step input and speed of response be the criteria for design, what controller would you recommend (1) P controller (2) PD controller (3) PI controller (4) PID controller

Last Answer : If stability error for step input and speed of response be the criteria for design, what controller would you recommend (1) P controller (2) PD controller (3) PI controller (4) PID controller

Consider a continuous-time system with input x(t) & output y(t) are related by y(t) = x (sin t). This system is

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

If a step function is applied to the input of a system and the output...

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.

Velocity error constant of a system is measured when the input to the ...

Description : Velocity error constant of a system is measured when the input to the system is unit _______ function.

Last Answer : Velocity error constant of a system is measured when the input to the system is unit ramp function.

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

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.

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

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 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

Last Answer : Option A

Which set of truth table input signals will result in an output signal value of 1 from the 'AND' gate as shown in the illustration? EL-0035 A. 1-Jan B. Jan-00 C. 0-1 D. 0-0

Description : Which set of truth table input signals will result in an output signal value of 1 from the 'AND' gate as shown in the illustration? EL-0035 A. 1-Jan B. Jan-00 C. 0-1 D. 0-0

Last Answer : Answer: A

The purpose of a 'slew rate controller' in a circuit such as shown in the illustration is to ______________. EL-0096 A. limit the rate of change of a signal B. introduce a 'live zero' factor into the circuit C. shape the linear input into a non-linear output D. reduce air pressure to a value required by a combination circuit

Description : The purpose of a 'slew rate controller' in a circuit such as shown in the illustration is to ______________. EL-0096 A. limit the rate of change of a signal B. introduce a 'live zero' ... linear input into a non-linear output D. reduce air pressure to a value required by a combination circuit

Last Answer : Answer: A

In a circuit such as that shown in figure 3-16, if R1 has a value of 50 ohms and R2 has a value of 250 ohms and the input signal has a value of +10 millivolts, what is the value of the output signal?

Description : In a circuit such as that shown in figure 3-16, if R1 has a value of 50 ohms and R2 has a value of 250 ohms and the input signal has a value of +10 millivolts, what is the value of the output signal?

Last Answer : 60 millivolts.

In a circuit such as that shown in figure 3-15, if R1 has a value of 100 ohms and R2 has a value of 1 kilohm and the input signal is at a value of + 5 millivolts, what is the value of the output signal?

Description : In a circuit such as that shown in figure 3-15, if R1 has a value of 100 ohms and R2 has a value of 1 kilohm and the input signal is at a value of + 5 millivolts, what is the value of the output signal?

Last Answer : 50 millivolts.

The pump signal frequency must be of what value when compared to the input signal of a simple parametric amplifier?

Description : The pump signal frequency must be of what value when compared to the input signal of a simple parametric amplifier?

Last Answer : Exactly double the input frequency.

Which of the following statements represents an application of a silicon controlled rectifier? A. To provide DC power for a main propulsion motor. B. For use as a voltage reference diode. C. For sensing flame in an automated burner. D. To eliminate power supply hum.

Description : Which of the following statements represents an application of a silicon controlled rectifier? A. To provide DC power for a main propulsion motor. B. For use as a voltage reference diode. C. For sensing flame in an automated burner. D. To eliminate power supply hum.

Last Answer : Answer: A

Which of the following cannot be passed to a function? A) Reference variable B) Arrays C) Class objects D) Header files

Description : Which of the following cannot be passed to a function? A) Reference variable B) Arrays C) Class objects D) Header files

Last Answer : D) Header files

When one object reference variable is assigned to another object reference variable then (A) a copy of the object is created. (B) a copy of the reference is created. (C) a copy of the reference is not created. (D) it is illegal to assign one object reference variable to another object reference variable.

Description : When one object reference variable is assigned to another object reference variable then (A) a copy of the object is created. (B) a copy of the reference is created. (C) a copy of the ... not created. (D) it is illegal to assign one object reference variable to another object reference variable.

Last Answer : (B) a copy of the reference is created.

What was the controlled variable domino dash lab?

Description : What was the controlled variable domino dash lab?

Last Answer : Need answer

Cascade control is (A) The continuous adjustment of the set point index of an automatic control loop by a primary (master) controller (B) Used when changes in process conditions cause serious upsets in the controlled variable (C) Useful to control flow from temperature (D) All 'a', 'b' & 'c'

Description : Cascade control is (A) The continuous adjustment of the set point index of an automatic control loop by a primary (master) controller (B) Used when changes in process conditions cause serious upsets in the controlled variable (C) Useful to control flow from temperature (D) All 'a', 'b' & 'c'

Last Answer : (D) All 'a', 'b' & 'c'

The fundamental assumption of experimental method is related with Options: A) Law of single variable B) Law of two variable C) Controlled conditions D) Intermediary variables

Description : The fundamental assumption of experimental method is related with Options: A) Law of single variable B) Law of two variable C) Controlled conditions D) Intermediary variables

Last Answer : A) Law of single variable 

The speed of a three-phase induction motor is controlled by variable voltage variable frequency control

Description : The speed of a three-phase induction motor is controlled by variable voltage variable frequency control (i.e. keeping V/f constant). As the frequency is reduced, the slip at maximum torque  (1) Decreases (2) Increases (3) Remains constant (4) None of the above

Last Answer : The speed of a three-phase induction motor is controlled by variable voltage variable frequency control (i.e. keeping V/f constant). As the frequency is reduced, the slip at maximum torque Increases 

In a self-controlled synchronous motor fed from a variable frequency inverter

Description : In a self-controlled synchronous motor fed from a variable frequency inverter  (1) the rotor poles invariably have damper windings  (2) there are stability problems  (3) the speed of the rotor decides stator frequency  (4) the frequency of the stator decides the rotor speed

Last Answer : 2

What is the process that tends to build up the land surface by deposition of solid material in its lower areas, known as? a. Abrasion b. Agglomeration c. Aggradation d. Attrition

Description : What is the process that tends to build up the land surface by deposition of solid material in its lower areas, known as? a. Abrasion b. Agglomeration c. Aggradation d. Attrition

Last Answer : c. Aggradation

With reference to NC machines, which of the following statements is wrong a.Both closed-loop and open-loop control systems are used b.Paper tapes, floppy tapes and cassettes are used for data storage c.Digitizers may be used as interactive input devices d.Post processor is an item of hardware

Description : With reference to NC machines, which of the following statements is wrong a.Both closed-loop and open-loop control systems are used b.Paper tapes, floppy tapes and cassettes are used for data storage c.Digitizers may be used as interactive input devices d.Post processor is an item of hardware

Last Answer : c.Digitizers may be used as interactive input devices

In the illustration, the small battery and Rb are in the circuit to apply ________. EL-0022 A. forward bias to the emitter-base B. reverse bias to the emitter-base C. a 'reference charge' on the input capacitor D. a buffer between the input ground and the emitter ground

Description : In the illustration, the small battery and Rb are in the circuit to apply ________. EL-0022 A. forward bias to the emitter-base B. reverse bias to the emitter-base C. a 'reference charge' on the input capacitor D. a buffer between the input ground and the emitter ground

Last Answer : Answer: A

The voltage at the reference electrode of the circuit shown in the illustration is applied to the input of a/an ______________. EL-0090 A. class A detector whose output drives an autotransformer B. operational amplifier whose output controls a step-up voltage reactor C. amplitude modulator whose output drives an 2-stage isolation transformer D. magnetic amplifier whose output controls a saturable reactor

Description : The voltage at the reference electrode of the circuit shown in the illustration is applied to the input of a/an ______________. EL-0090 A. class A detector whose output drives an ... drives an 2-stage isolation transformer D. magnetic amplifier whose output controls a saturable reactor

Last Answer : Answer: D

Which instruction are arranged as per the protocols of memory reference format of the input file in a simple ASCII sequence of integers between the range O to 99 separated by spaces without formatted text and symbols: a. Memory reference instruction b. Memory reference format c. Both d. None of these

Description : Which instruction are arranged as per the protocols of memory reference format of the input file in a simple ASCII sequence of integers between the range O to 99 separated by spaces without formatted text ... : a. Memory reference instruction b. Memory reference format c. Both d. None of these

Last Answer : a. Memory reference instruction

A single phase, half-wave, controlled rectifier has 400 sin (314 t) as the input voltage and R as the load...

Description : A single phase, half-wave, controlled rectifier has 400 sin (314 t) as the input voltage and R as the load. For a firing angle of 60° for the SCR, the average output voltage is   (a) 240/π (b) 400/π (c) 300/π (d) 200/π 

Last Answer : C

The difference between signal strength at a given point and a reference level is________. A. power B. dBm C. level D. ratio

Description : The difference between signal strength at a given point and a reference level is________. A. power B. dBm C. level D. ratio

Last Answer : C. level

An antenna that can only receive a television signal. A. Isotropic antenna B. TVRO C. Reference antenna D. Yagi antenna

Description : An antenna that can only receive a television signal. A. Isotropic antenna B. TVRO C. Reference antenna D. Yagi antenna

Last Answer : B. TVRO

In a Doppler VOR (DVOR) the reference signal is _____, the bearing signal is ______ and the direction of rotation of the bearing signal is ______. a. AM, FM, anti-clockwise b. AM, FM, clockwise c. FM, AM, anti-clockwise d. FM, AM, clockwise

Description : In a Doppler VOR (DVOR) the reference signal is _____, the bearing signal is ______ and the direction of rotation of the bearing signal is ______. a. AM, FM, anti-clockwise b. AM, FM, clockwise c. FM, AM, anti-clockwise d. FM, AM, clockwise

Last Answer : a. AM, FM, anti-clockwise

If the input signals are 180 degrees out of phase with each other and a combined output is taken between the two output terminals, what will the amplitude of the combined output signal be?

Description : If If the input signals are 180 degrees out of phase with each other and a combined output is taken between the two output terminals, what will the amplitude of the combined output signal be?

Last Answer : 200 millivolts.

If the lateral force acting on the set screw is large and tends to displace one part with respect to other than which point is recommended? a) Dog Point b) Cone Point c) Window Point d) Cut Point

Description : If the lateral force acting on the set screw is large and tends to displace one part with respect to other than which point is recommended? a) Dog Point b) Cone Point c) Window Point d) Cut Point

Last Answer : a) Dog Point

A signal derived from a controlled function and returned to the initiating point is called a/an ____________. A. monitoring signal B. inverse signal C. reverse signal D. feedback signal

Description : A signal derived from a controlled function and returned to the initiating point is called a/an ____________. A. monitoring signal B. inverse signal C. reverse signal D. feedback signal

Last Answer : Answer: D

If input energy has a variable frequency, is it possible to have a stable DC output?

Description : If input energy has a variable frequency, is it possible to have a stable DC output?

Last Answer : A power inverter , or inverter , is a power electronic device or circuitry that changes direct current (DC) to alternating current (AC). [1] The input voltage, output voltage and ... called oscillators . Circuits that perform the opposite function, converting AC to DC, are called rectifiers.

In the illustration, the component VR2 on the A1 AMPLIFIER MODULE is _________. EL-0060 A. a zener diode to regulate the +9 volt power supply from common B. a variable resistor diode to control the output to terminal 1 that controls the input to terminal 10 C. a zener diode that regulates the voltage to terminal 2 at 9.1 volts DC D. a tunnel diode with a breakdown voltage of 6.6 Volts DC

Description : In the illustration, the component VR2 on the A1 AMPLIFIER MODULE is _________. EL-0060 A. a zener diode to regulate the +9 volt power supply from common B. a variable resistor diode to control the output to terminal ... 2 at 9.1 volts DC D. a tunnel diode with a breakdown voltage of 6.6 Volts DC

Last Answer : Answer: C