What Is Force Balance Principle? State Some Of Its’ Advantages?

What Is Force Balance Principle? State Some Of Its’ Advantages?
by

1 Answer

Answer :

Force balance principle: A controller which generates an output signal by opposing torque. The input force is applied on the input bellows which moves the beam. This crackles nozzle back pressure. The nozzle back pressure is sensed by the balancing bellows which brings the beam to balance. The baffle movement is very less about 0.002 for full scale output.
Advantages:
1. Moving parts are fewer.
2. Baffle movement is negligible
3. Frictional losses are less
by

Related questions

What Is Motion Balance Principle?

Description : What Is Motion Balance Principle?

Last Answer : A controller which generates an output signal by motion of its parts. The increase in the baffle is to move towards the nozzle. The nozzle back pressure will increase. This increase in the back ... moved upward due to this. The nozzle will move until motion almost equals the input baffle motion.

What Is The Working Principle Of The Magnetic Meter?

Description : What Is The Working Principle Of The Magnetic Meter?

Last Answer : An electric potential is developed when a conductor is moved across the magnetic field. In most electrical machinery the conductor is a wire. The principle is equally applicable to a moving ... conducting liquids. The magnetic meter is particularly suited to measurement of slurries and dirty fluids.

Explain Bernoulli’s Theorem. State Its Application?

Description : Explain Bernoulli’s Theorem. State Its Application?

Last Answer : Bernoulli's theorem states that the total energy of a liquid flowing from one point to another remains constant'. It is applicable for non-compressible liquids. For different types of liquid flow ... indicator. It can also be used to low pressure in the venturi tubes present in carburetor.

What Are Different Types Of Orifice Plates? State Their Uses?

Description : What Are Different Types Of Orifice Plates? State Their Uses?

Last Answer : Different orifice plates are: 1. Concentric 2. Segmental 3. Eccentric Concentric: These plates are used for ideal liquid as well as gases and steam service. Concentric holes are present in these ... This plate has the eccentric holes. This plate is used in viscous and sherry flow measurement.

What Is Solenoid Valve? Where It Is Used?

Description : What Is Solenoid Valve? Where It Is Used?

Last Answer : A solenoid is electrically operated valve. It consists of solenoid coil in which magnetic plunger moves. This plunger is connected to the plug and tends to open or close the valve. There are two ... . Normally Open 2. Normally closed Use: It is used for safety purpose in different electric work.

Explain Ratio Control System?

Description : Explain Ratio Control System?

Last Answer : A ratio control system is characterized by the fact that variations in the secondary variable don't reflect back on the primary variable. A ratio control system is the system where secondary flow is hold in some proportion ... : KA-B=0 or B/A = K where K' is the ratio setting off the relay.

How Will You Test A Transistor With A Multimeter?

Description : How Will You Test A Transistor With A Multimeter?

Last Answer : 1. Emitter +ve of meter and base -ve output =Low resistance 2. Emitter -ve of meter and base +ve output =High resistance 3. Collector +ve and base -ve output =Low 4. Collector -ve and base +ve output =Low Emitter: Collector = High resistance PNP: Opposite Results

What Is Zener Diode? What Is Voltage Regulator?

Description : What Is Zener Diode? What Is Voltage Regulator?

Last Answer : The breakdown region of a p-n diode can be made very sharp and almost vertical diodes with almost vertical breakdown region are known a s zener diodes. A zener diode operating in the ... . Voltage regulator: The output remains constant despite changes in the input voltage due to zener effect.

Hat Is Zener Diode? What Is Voltage Regulator?

Description : Hat Is Zener Diode? What Is Voltage Regulator?

Last Answer : The breakdown region of a p-n diode can be made very sharp and almost vertical diodes with almost vertical breakdown region are known a s zener diodes. A zener diode operating in the breakdown ... . It is this constant voltage that has made the zener diode an important device in voltage regulation.

What Is Intrinsically Safe System?

Description : What Is Intrinsically Safe System?

Last Answer : Intrinsic safety is a technique for designing electrical equipment for safe use in locations made hazardous by the presence of flammable gas or vapours in the air. Intrinsically safe circuit is one ... causing ignition of a specified gas or vapour in air mixture at the most ignited concentration.

What Is Furnace Draft Control?

Description : What Is Furnace Draft Control?

Last Answer : Balanced draft boilers are generally used negative furnace pressure. When both forced draft and induced draft are used together, at some point in the system the pressure will be same as that of ... desirable condition is that the one have a very slight negative pressure of the top of furnace.

What Are Different Types Of Control Valves?

Description : What Are Different Types Of Control Valves?

Last Answer : The commonly used control valves can be defined as follows: a. Depending on Action: Depending on action there are two types of control valves 1. Air to open 2. Air to close b. Depending on body ... valves 1. Globe valves single or double seated 2. Angle valves 3. Butterfly valves 4. Three way valves

Name Different Types Of Bourdon Tubes?

Description : Name Different Types Of Bourdon Tubes?

Last Answer : Types of bourdon tubes: 1. C type 2. Spiral 3. Helix

What Are Primary Elements Of Measuring Pressure? Which Type Of Pressure Can Be Measured By These Elements?

Description : What Are Primary Elements Of Measuring Pressure? Which Type Of Pressure Can Be Measured By These Elements?

Last Answer : Primary elements of measuring pressure are: 1. Bourdon Tube 2. Diaphragm 3. Capsule 4. Bellows 5. Pressure springs These elements are known as elastic deformation pressure elements.

What Is The Use Of Valve Positioner?

Description : What Is The Use Of Valve Positioner?

Last Answer : Valve positioner can be used for following reasons: 1. Quick action 2. Valve hysteresis 3. Viscous liquids 4. Split range. 5. Line pressure changes on valve 6. Bench set not standard 7. Reverse valve operations

What Is The Use Of Double Seated Valve?

Description : What Is The Use Of Double Seated Valve?

Last Answer : In double seated valves the upward and downward forces on the plug due to reduction of fluid pressure are nearly equalized. It is generally used on bigger size valves and high pressure systems. Actuator forces required are less.

What Is The Use Of Single Seated Valve?

Description : What Is The Use Of Single Seated Valve?

Last Answer : The single seated valve is used on smaller sizes where an absolute shut off is required. The use of single seated valve is limited by pressure drop across the valve in the closed or almost closed position.

How Would You Choose Differential Range?

Description : How Would You Choose Differential Range?

Last Answer : The most common range for differential range for liquid measurement is 0-100. This range is high enough to minimize the errors caused by unequal heads in the seal chambers. It is also dependent on the ... to 400. While decrease down up to 20 by merely changing the range tubes or range adjustments.

Explain The Mechanism Behind The Turbine Meter?

Description : Explain The Mechanism Behind The Turbine Meter?

Last Answer : Turbine meters consist of straight flow tube within which a turbine or fan is free to rotate about it s axis which is fixed along g the centre line of the tube. Mostly, a magnetic pick up ... in the form of electric pulses from the magnetic pick up with a frequency proportional to the flow rate.

Explain The Working Of Rotameter?

Description : Explain The Working Of Rotameter?

Last Answer : Variable area meters are special form of head meters. Where in the area of flow restrictor is varied. So as to hold the differential pressure constant. The rota meter consists of a vertical tapered tube ... is maintained constant. The position of the float' is the measure of the rate of flow.

What Are De-saturators?

Description : What Are De-saturators?

Last Answer : When, in some processes, e.g. batch processes, long transient responses are expected during which a sustained deviation is present the controller integral action continuously drives the output to a minimum or ... of the control unit'. When this condition is met, then this unit is de-saturated.

How Is Automatic Reference Junction Compensation Carried Out In Temperature Recorders?

Description : How Is Automatic Reference Junction Compensation Carried Out In Temperature Recorders?

Last Answer : In automatic reference junction compensation, variable nickel resistor is used. As the temperature changes, so does its resistance. This reference junction compensator is located, so that it will be ... the thermocouple is rejoined. This joint is invariably at the terminal strip of the instrument.

Why Thermowells Are Used? What Materials Are Used In Thermo Wells?

Description : Why Thermowells Are Used? What Materials Are Used In Thermo Wells?

Last Answer : In numerous applications, it is neither desirable nor practical to expose a temperature sensor directly to a material. Wells are therefore used to protect against damage corrosion, arosion, ... operations. Materials used in thermowells: Stainless steel, Inconel, Monel, Alloy Steel, Hastelloy

Explain The Burnout Feature?

Description : Explain The Burnout Feature?

Last Answer : Burnout provides the warnsug feature of driving indicator at the end of scale, if the input circuit is open. A burnout resistor is provided which develops a voltage drop between the measuring circuit and ... circuit in the input. Upscale burnout: R value 10 M Downscale burnout: R value 22 M

What Is The Constant Voltage Unit?

Description : What Is The Constant Voltage Unit?

Last Answer : The constant voltage circuit consists of a rectifier, CR and a filter capacitor. It is followed by two stages of zener regulation. Abridge configuration is provided to lamp line voltage ... provides relatively provide constant current. Resistors form a bridge that may remoment line voltage effects.

Explain The Working Of An Enraf Level Gauge?

Description : Explain The Working Of An Enraf Level Gauge?

Last Answer : Enraf level gauge is based on the ser powered null balance technique. A displacer serves as continuous level sensing element. A two phase ser motor controlled by a capacitive balance system winds unwinds ... by the moving central sensing rod provided by the two capacitor plates and the si plates.

Explain The Working Of An Electronic Level Troll?

Description : Explain The Working Of An Electronic Level Troll?

Last Answer : The variation in level of buoyancy resulting from a change in liquid level varies the net weight of the displacer increasing or decreasing the load on the torque arm. This change is directly ... change proportional to the rotor displacement, which is converted and amplified to a D.C. current.

How D.p. Transmitter Can Be Applied To Open Tank?

Description : How D.p. Transmitter Can Be Applied To Open Tank?

Last Answer : In open tank the lower pressure side is vented to the atmosphere. All pressure is applied to the high pressure side. This vessel pressure is measured through high pressure side.

How D.p. Transmitter Can Be Applied To Close Tank?

Description : How D.p. Transmitter Can Be Applied To Close Tank?

Last Answer : In closed tank, bottom of the tank is connected to the high pressure side of the transmitter. Top of tank is connected to the lower pressure side of the transmitter. In this way vessel pressure can be measured.

Name Different Parts Of A Pressure Gauge. Explain The Use Of Hair Spring In The Pressure Gauge?

Description : Name Different Parts Of A Pressure Gauge. Explain The Use Of Hair Spring In The Pressure Gauge?

Last Answer : Pressure gauge includes following components: 1. ‘C’ type bourdon tube. 2. Connecting link 3. Sector gear 4. Pinion Gear 5. Hair spring 6. Pointer 7. Dial Use of hair spring: Hair spring is responsible for controlling torque. It is also used to eliminate any play into linkages..

How Is Flow Measured In Square Root?

Description : How Is Flow Measured In Square Root?

Last Answer : Flow varies directly as the square root of pressure. Thus, F=K of square root of applied pressure. Since this flow varies as the square root of differential pressure. The pressure pen does not directly ... reads 50% of the chart. So, flow can be calculated using the pen measure in the chart.

How Can A D.p. Transmitter Be Calibrated?

Description : How Can A D.p. Transmitter Be Calibrated?

Last Answer : D.P. transmitter can be calibrated using following steps: 1. Adjust zero of Transmitter. 2. Perform static pressure test: Give equal pressure on both sides of transmitter. Zero should not ... Apply required pressure to the high pressure side and adjust the span. Adjust zero gain if necessary.

Why Is The Orifice Tab Provided?

Description : Why Is The Orifice Tab Provided?

Last Answer : Following reasons justify for providing orifice tab: 1. Indication of orifice plate in a line 2. The orifice diameter is marked on it. 3. The material of the orifice plate. 4. The tag number of the orifice plate. 5. To mark the inlet of an orifice.

How Do You Identify An Orifice In The Pipeline?

Description : How Do You Identify An Orifice In The Pipeline?

Last Answer : An orifice tab is welded on the orifice plate which extends out of the line giving an indication of the orifice plate.

What Is Force Balance Principle? State Some Of Its' Advantages?

Description : What Is Force Balance Principle? State Some Of Its' Advantages?

Last Answer : Force balance principle: A controller which generates an output signal by opposing torque. The input force is applied on the input bellows which moves the beam. This crackles nozzle back pressure. The ... a. Moving parts are fewer. b. Baffle movement is negligible c. Frictional losses are less

Explain the principle of working of hydraulic actuator and state its advantages.

Description : Explain the principle of working of hydraulic actuator and state its advantages.

Last Answer : Working Principle of Hydraulic Actuator  1. According to Pascal, when there is an increase in pressure at any point in a confined incompressible fluid, then there is an equal increase at every point in ... better performance than others. 3. Power to weight ratio of these actuators is high.

Errors of principle are not disclosed by the Trial Balance.

Description : Errors of principle are not disclosed by the Trial Balance.

Last Answer : State whether the following statement are True or False with reason : Errors of principle are not disclosed by the Trial Balance.

Which of the following errors are not disclosed by Trial Balance ? (A) Compensatory Errors (B) Errors of Principle (C) Errors of Omission (D) All the three

Description : Which of the following errors are not disclosed by Trial Balance ? (A) Compensatory Errors (B) Errors of Principle (C) Errors of Omission (D) All the three

Last Answer : Answer: All the three

The presidential system operates on the principle of – (1) Division of powers (2) Separation of powers (3) Fusion of powers (4) Balance of powers

Description : The presidential system operates on the principle of – (1) Division of powers (2) Separation of powers (3) Fusion of powers (4) Balance of powers

Last Answer : (2) Separation of powers Explanation: The presidential system operates on the principle of separation of powers. India follows a parliamentary system of government, which offers a clear separation of powers.

The Presidential Government operates on the principle of – (1) Division of Powers between Centre and Slates (2) Centralisation of Powers (3) Balance of Powers (4) Separation of Powers

Description : The Presidential Government operates on the principle of – (1) Division of Powers between Centre and Slates (2) Centralisation of Powers (3) Balance of Powers (4) Separation of Powers

Last Answer : (4) Separation of Powers Explanation: In democratic systems of governance based on the trias politjca, a fundamental parallel and a fundamental difference exists between presidential systems and constitutional ... the United States, with unitary executive) or a government, headed by a prime minister

The spring balance works on the principle of - (1) Boyle's Law (2) Hooke's Law (3) Bernoulli's principle (4) Pascal's Law

Description : The spring balance works on the principle of - (1) Boyle's Law (2) Hooke's Law (3) Bernoulli's principle (4) Pascal's Law

Last Answer : (2) Hooke's Law Explanation: A spring scale or spring balance or Newton meter is a type of weighing scale. It consists of spring fixed at one end with a hook to attach an object at the ... force needed to extend a spring is proportional to the distance that spring is extended from its rest position.

What Is Motion Balance Principle?

Description : What Is Motion Balance Principle?

Last Answer : A controller which generates an output signal by motion of its parts. The increase in the baffle is to move towards the nozzle. The nozzle back pressure will increase. This increase in the back ... moved upward due to this. The nozzle will move until motion almost equals the input baffle motion.

Which statement is true? 1) The balance of payments depends on the principle of double-entry accounting. 2) Decrease in assets and increase in liabilities of net worth represent credits or sources of funds. 3) The balance of payment is a source- and uses of funds statement that reflects changes in assets, liabilities and net worth during a specified period of time. A. Only 1 B. Only 2 C. Only 3 D. 1, 2 and 3

Description : Which statement is true? 1) The balance of payments depends on the principle of double-entry accounting. 2) Decrease in assets and increase in liabilities of net worth represent credits or sources of funds. 3) The balance of ... period of time. A. Only 1 B. Only 2 C. Only 3 D. 1, 2 and 3

Last Answer : D. 1, 2 and 3

The spring balance works on the principle of __________ . (1) Boyle’s Law (2) Hooke’s Law (3) Bernoulli’s principle (4) Pascal’s Law

Description : The spring balance works on the principle of __________ . (1) Boyle’s Law (2) Hooke’s Law (3) Bernoulli’s principle (4) Pascal’s Law

Last Answer : Hooke’s Law

Discuss in brief the principle of distance protection and state four advantages of distance protection scheme.

Description : Discuss in brief the principle of distance protection and state four advantages of distance protection scheme.

Last Answer : Advantages: 1. System is economical 2. High speed of interruption 3. Suitable for very long and high voltage transmission lines. 4. No problem of pilot wires.

Advantages and disadvantages of balance of payment?

Description : Advantages and disadvantages of balance of payment?

Last Answer : advantages of balance of payment

What are the advantages of using logical spool servers? Note: there are 2 correct answered to this question A. You can create more output devices B. You can balance the load across multiple physical spool servers C. You can minimize the load on physical devices D. You can minimize the manual adjustment of output device definitions after the transport

Description : What are the advantages of using logical spool servers? Note: there are 2 correct answered to this question A. You can create more output devices B. You can balance the load across ... on physical devices D. You can minimize the manual adjustment of output device definitions after the transport

Last Answer : B. You can balance the load across multiple physical spool servers C. You can minimize the load on physical devices

Explain principle of freeze drying. Give its advantages.

Description : Explain principle of freeze drying. Give its advantages.

Last Answer : Principle:  i. The material is frozen in a suitable container connected to a high vacuum system, so that the vapour pressure of water is reduced to less than that of material being dried. ii. ... it is properly sealed in an inert atmosphere. vii. The sterility of the product can be maintained. 

State principle of transmissibility of force.

Description : State principle of transmissibility of force.

Last Answer : Principle of Transmissibility of Force: It states that if a force acts at a point on a rigid body, it is assumed to act at any other point on the line of action of force within the same body. 

Explain the working, advantages and disadvantages of any one mill based on the principle of combined impact and attrition?

Description : Explain the working, advantages and disadvantages of any one mill based on the principle of combined impact and attrition?

Last Answer : which of the following mill works on the principle of combined impact and attrition