Define: (i) Resolution, (ii) Calibration, with reference to electrical measuring systems.

Define: (i) Resolution, (ii) Calibration, with reference to electrical measuring systems.
by

1 Answer

Answer :

Resolution

The smallest increment in input (the quantity being measured) which can be detected with certainty by an instrument is called its resolution or discrimination. 

OR

It is smallest measurable input change of an instrument. 

OR

it is the least incremental value of the electrical quantity on the scale 

Calibration: 

Calibration means comparing the measuring instrument with standard instrument to find out the error in the instrument under test.

by

Related questions

calibration and the need of calibration for measuring instruments.

Description : calibration and the need of calibration for measuring instruments.

Last Answer : Calibration - It is a process of estimating the value of a quantity by comparing that quantity with a standard quantity.    Need of calibration: - Calibration defines the accuracy and ... aim of calibration is to minimize any measurement uncertainty by ensuring the accuracy of test equipment.

State two purposes of calibration of measuring instruments.

Description : State two purposes of calibration of measuring instruments.

Last Answer : Purposes of calibration of measuring instruments: - The purpose of calibration is to ensure that readings of an instrument are consistent with other instruments. It is also important in determining the ... will need to be calibrated periodically to make sure it can function properly and safely. 

State the function of controlling torque in electrical measuring instrument.

Description : State the function of controlling torque in electrical measuring instrument.

Last Answer : Function of controlling torque  1. The function is to opposes the deflection force and increases with the increase in the deflection of the moving system, to limit its movement. 2. and brought ... set a position where the two opposing forces i.e. deflection and controlling forces are equal. 

What are the test and measuring instrument required in an Electrical depots?

Description : What are the test and measuring instrument required in an Electrical depots?

Last Answer : Ans. Following are the test and measuring instruments required in an Electrical depots. a. Test lamp b. Line Tester c. Continuity tester d. Volt meter e. Ammeter f. Earth megger g. Megger h. Lux meter i. Power analyzer j. Infrared thermometer

Electrical Measuring Instruments

Description : Electrical Measuring Instruments

Last Answer : Electrical Measuring Instruments

Define: i) Calibration ii) Traceability

Description : Define: i) Calibration ii) Traceability

Last Answer : i) Calibration: Comparison of an unknown quantity to a known standard quantity.  ii) Traceability: It is defined as an unbroken chain of comparisons relating an instrument's measurements to a known ... to a traceable standard can be used to determine an instrument's bias, precision, and accuracy.

With neat diagram explain calibration of energy meter by direct loading method.

Description : With neat diagram explain calibration of energy meter by direct loading method.

Last Answer : Calibration of Energy Meter by Direct Loading Method:  There are three methods for testing/calibration:  1. Long period dial test  2. Using rotary sub- standard meter  3. Using precision grade instruments  All ... of substandard meter in kWh  Then % error = [(D - DS)/DS] x 100

Describe procedure for calibration of ammeter with diagram.

Description : Describe procedure for calibration of ammeter with diagram.

Last Answer : Procedure for Calibration of Ammeter:  In this method, DC potentiometer is used for measurement of voltage across a standard low resistance.  Connect the circuit as shown in the figure, ... S = resistance of potentiometer  And the currents are compared for finding out error in ammeter.

Define :- (i) Accuracy (ii) Resolution

Description : Define :- (i) Accuracy (ii) Resolution

Last Answer : i) Accuracy: It is the closeness of an instrument reading with the true value of the quantity under measurement.  OR  It is defined as the ability of an instrument to respond to a ... can be detected with certainty by an intrument.  OR  Resolution is the smallest measurable input change

need of calibration and explain the procedure to calibrate the instrument.

Description : need of calibration and explain the procedure to calibrate the instrument.

Last Answer : Need of calibration: Every measuring device degrades over time due to normal wear and tear. These changes can be caused by various reasons such as electric or mechanical shock or a hazardous manufacturing ... different magnitude are used to calculate the resistance based on ohm's law.

Define the static characteristics: i) Resolution ii) Drift.

Description : Define the static characteristics: i) Resolution ii) Drift.

Last Answer : i) Resolution: It is the smallest increment in the input which can be detected by the instrument or the smallest measurable input change.  ii) Drift: The gradual shift in the indication or record of ... of time, during which the true value of the variable does not change is referred to as drift. 

Define following terms related to measuring instruments: i) Sensitivity ii) Selectivity.

Description : Define following terms related to measuring instruments: i) Sensitivity ii) Selectivity.

Last Answer : i) Sensitivity: It is the ratio of the change in output signal to the change in input signal of quantity being measured.  ii) Selectivity: It is the term to describe fulfillment of the requirements of measurement by an instrument to be suitable for use in a given situation. 

vertical and horizontal resolution in brief.

Description :  vertical and horizontal resolution in brief.

Last Answer : Resolution: The scanning and reproduction of the finest details of the picture is known as resolution of TV system. Vertical Resolution: The ability of the scanning system to resolve picture details in vertical ... (N) that get scanned in one horizontal line are  N = Na * Aspect Ratio *K

Define natural, mechanical, forced and induced draught systems.

Description : Define natural, mechanical, forced and induced draught systems.

Last Answer : Natural draught system: - When the fuel is burnt (combustion) in the furnace due to natural circulation of air, the draught is called natural draught. Mechanical draught system: -  In a mechanical ... combustion. OR If fan/blower is placed after the furnace then it is called as induced draught

For increasing the resolution of photographs online for free, which website could you recommend?

Description : For increasing the resolution of photographs online for free, which website could you recommend?

Last Answer : You could just pirate the software “AI Gigapixel”.

Human eye resolution?

Description : Human eye resolution?

Last Answer : People have estimated around 500–600 megapixels but this is a funny way of talking about our amazing, amazing eyeballs. More interestingly, our eyes adjust to differences in light and light temperature better than any camera. Go rods and cones!

LCD Display Resolution

Description : LCD Display Resolution

Last Answer : When you go out shopping for a new LCD TV, one of the most important things worth checking is the resolution. What's the use of an LCD when your neighbor's 20-year-old CRT has better resolution and colors? ... 1680 1050 (or WSXGA+) 24 (widescreen): 1920 1200 (or WUXGA+) 30 (widescreen): 2560 1600

How to Change Screen Resolution ?

Description : How to Change Screen Resolution ?

Last Answer : How to Change Screen Resolution The resolution of your computer screen can affect the way you perceive images on your computer, and helps you accomplish tasks better and more efficiently. With high ... make it easier for you to accomplish your tasks, and to maximize your use of hardware.

How to Change Your Monitor Resolution ?

Description : How to Change Your Monitor Resolution ?

Last Answer : How to Change Your Monitor Resolution Images, pictures, and video can all benefit from a high resolution. Before the days of advanced CRT and flat-screen LCD monitors, people had to put up with ... With these tips, you can adjust your screen resolution for just the right task quickly and easily.

Which type of ADC gives high resolution?

Description : Which type of ADC gives high resolution?

Last Answer : Sigma Delta, successive approximation and integrating type analogue to digital converter gives very high resolution but they have slower speed.

The percent resolution of an 8 -bit D/A converter is

Description : The percent resolution of an 8 -bit D/A converter is

Last Answer : The percent resolution of an 8 -bit D/A converter is 0.392

Explain the essential toques in analog type measuring instruments.

Description : Explain the essential toques in analog type measuring instruments.

Last Answer : List of torques in analog instruments:  1. Deflecting torque  2. Controlling / Restraining torque.  3. Damping torque.  1. Deflecting torque: To create deflection proportional to ... the speed higher will be the damping torque bringing the pointer to the equilibrium position quickly. 

List three types of errors in measuring instruments. Give reasons of occurring for any one of them.

Description : List three types of errors in measuring instruments. Give reasons of occurring for any one of them.

Last Answer : Types of errors in measuring instruments:  A) Gross error: These are due to mistakes on the part of person using the instrument.  B) Systematic Error: i) Instrumental Error: These ... multiplying factor.  C) Random error: These persist even after gross and systematic errors are removed.

Describe spring control method of producing controlling torque in measuring instrument. Write any two properties required for spring material.

Description : Describe spring control method of producing controlling torque in measuring instrument. Write any two properties required for spring material.

Last Answer : A)Spring control method: As shown in the figure, the inner ends of the both springs are attahced to the spindle, while outer end of upper spring is attached to the lever and outer ... of spring material: 1.Non Magnetic material 2.Low specific resistance 3.Low temperature coefficient of resistance

Name the different torque and their function in measuring instrument.

Description : Name the different torque and their function in measuring instrument.

Last Answer : List of torques in analog instruments:  1. Deflecting torque  2. Controlling / restraining torque.  3. Damping torque.  1. Deflecting torque:  - To create deflection of pointer ... .  - Bring the pointer to standstill quickly.  - To minimize oscillations about final position. 

Give the classification of the errors used in measuring instrument & state the reason for their occurrence.

Description : Give the classification of the errors used in measuring instrument & state the reason for their occurrence.

Last Answer : Types of errors in measuring instruments:  A) Gross error: These are due to mistakes on the part of person using the instrument.  B) Systematic Error:  i) Instrumental Error: These ... multiplying factor.  C) Random error: These persist even after gross and systematic errors are removed. 

List out any four effects of electric current used in measuring instruments & write name of meter working on it.

Description : List out any four effects of electric current used in measuring instruments & write name of meter working on it.

Last Answer : Effects of Electric Current used in measuring instruments:  1. Magnetic Effect: PMMC and Moving Iron type Ammeters, voltmeter and Dynamometer type wattmeters etc.  2. Electromagnetic induction ... . Electrostatic effect: Voltmeters.  5. Hall Effect: Flux meter, Poynting vector wattmeter.

What arc the errors occurring in measuring devices due to stray magnetic field and temp '? Explain how to compensate them.

Description : What arc the errors occurring in measuring devices due to stray magnetic field and temp '? Explain how to compensate them.

Last Answer : 1. Error due to stray magnetic fields-   Main magnetic field gets disturbed by external magnetic fields known as stray magnetic fields.  2. Compensation technique   To avoid this error, ... resistance alloy having a negligible resistance temp coefficient in the ratio of 1:10 for pressure coil 

Explain magnetic effect employed in measuring instrument.

Description : Explain magnetic effect employed in measuring instrument.

Last Answer : Magnetic Effect:  I) In PMMC meters:  ➢ When a current is passed through a conductor, magnetic field is produced round the conductor. Due to this field when current ... field it experiences a mechanical force.  Examples: Electrodynamometer type instruments, Induction type instrument. 

Describe systematic errors in measuring instruments.

Description : Describe systematic errors in measuring instruments. 

Last Answer : Systematic errors: -  ➢ Instrumental Error: These errors are caused due to the mechanical structure of measuring instrument.  a) Inherent shortcomings of instruments: Instrument may read ... or electrostatic fields.  ➢ Observational Error: Parallax errors, incorrect multiplying factor. 

Why energy meter is integrating type measuring instrument?

Description : Why energy meter is integrating type measuring instrument?

Last Answer : Energy Meter is Integrating Type Measuring Instrument: Energy meter is used for measurement of energy, which is obtained by integration (summation) of power supplied over the particular time duration, hence it the integrating type measuring instrument. 

List any four effects employed in measuring instruments.

Description : List any four effects employed in measuring instruments.

Last Answer : Effects Employed in Measuring Instruments: 1. Magnetic Effect 2. Electromagnetic induction 3. Heating effect 4. Electrostatic effect 5. Hall Effect 

Skin effect is absent in which of the following transmission systems?

Description : Skin effect is absent in which of the following transmission systems? A) Extra High Voltage (EHV) AC B) High Voltage Direct Current (HVDC) C) Both A and B D) None of these

Last Answer : Skin effect is absent in which of the following transmission systems? A) Extra High Voltage (EHV) AC B) High Voltage Direct Current (HVDC) C) Both A and B D) None of these

Write a short note on Measuring Flask

Description : Write a short note on Measuring Flask

Last Answer : Measuring Flask : Flask is laboratory vessels (container). The flask is made of plastic or glass. They are of different sizes and shapes. In school laboratory, 50ml, 100ml, 250ml, 500ml & 1000ml ... of different sizes and shapes. In laboratory 10ml to 25 ml pipette of glass or plastic are used.

When measuring insulation resistance of cables using d.c. source, the galvanometer used should be initially

Description : When measuring insulation resistance of cables using d.c. source, the galvanometer used should be initially short circuited because  (A) Cables have a low value of capacitance which draws a high ... high value of charging current (D) Cables have a low value of capacitance and initial resistance

Last Answer : When measuring insulation resistance of cables using d.c. source, the galvanometer used should be initially short circuited because Cables have a high value of capacitance which draws a high value of charging current

The desirable static characteristics of a measuring system are?

Last Answer : The desirable static characteristics of a measuring system are accuracy, sensitivity and reproducibility.

For measuring a very high resistance we should use?

Last Answer : For measuring a very high resistance we should use Meggar.

For measuring current at high frequency we should use?

Last Answer : For measuring current at high frequency we should use thermocouple instrument.

String efficiency is used for measuring the?

Last Answer : String efficiency is used for measuring the degree of utilization of SCR.

Which of the following describes an ERP system? A. ERP systems provide a foundation for collaboration between departments B. ERP systems enable people in different business areas to communicate C. ERP systems have been widely adopted in large organisations to store critical knowledge used to make the decisions that drive the organisation's performance D. All of the above

Description : Which of the following describes an ERP system? A. ERP systems provide a foundation for collaboration between departments B. ERP systems enable people in different business areas to communicate C. ERP ... used to make the decisions that drive the organisation's performance D. All of the above

Last Answer : D. All of the above

The Guide to Septic Systems

Description : The Guide to Septic Systems

Last Answer : Septic system. It's a topic nobody wants to talk about; but someone has to talk about it one way or another, and we might as well do it now. In case you haven't noticed, the ... system is buried underground, you might want to make sure everything works just fine before you begin installing it.

Home Filing Systems

Description : Home Filing Systems

Last Answer : Who says you shouldn't organize your papers, bills, documents and whatnot in your own home? Why shouldn't you? What's so anal about wanting to know where you last Visa bills are, or to have copies of ... your filing system, it is organized, and a little bit of time each week will keep it that way.

State the objectives of tariff systems.

Description : State the objectives of tariff systems.

Last Answer : Objectives of tariff system: 1) Recover judiciously and legally capital investment made on electricity generation, transmission & distribution. 2) Recover judiciously and legally the cost of operation, supplies ... for high power factor. 8) Gain a suitable profit on the capital investment.

Load compensation in power systems is a process to :

Description : Load compensation in power systems is a process to :  (A) Maintain better voltage profile (B) Increase short circuit capacity of the system (C) Generate required harmonics for loads like arc furnaces (D) Compensate for the line reactance

Last Answer : Load compensation in power systems is a process to : Maintain better voltage profile

Precise control of reactive current flow entering the transmission and distribution systems can be minimized

Description : Precise control of reactive current flow entering the transmission and distribution systems can be minimized by using (A) synchronous condenser (B) static VAR capacitor (C) capacitor bank (D) thyristor switched reactor in parallel with capacitor

Last Answer : Precise control of reactive current flow entering the transmission and distribution systems can be minimized by using (A) synchronous condenser (B) static VAR capacitor (C) capacitor bank (D) thyristor switched reactor in parallel with capacitor

Regulating-transformers are used in power systems for control of

Description : Regulating-transformers are used in power systems for control of

Last Answer : Regulating-transformers are used in power systems for control of power flow

Its nice to see such good graphics used on avatars on fluther, why dont other sites adopt this, are there any?

Description : Its nice to see such good graphics used on avatars on fluther, why dont other sites adopt this, are there any?

Last Answer : Definitely Anonymous Witch’s. And I can finally tell what the hell carbonproduct’s avatars are too!

The ____________________ and ____________________ manage the supplier relations, monitor the vendor activities and manage the supplier quality in an organisation. A. Supplier management, customisation processes B. Supplier maintenance, control processes C. Supplier management, control processes D. Supplier maintenance, customisation processes

Description : The ____________________ and ____________________ manage the supplier relations, monitor the vendor activities and manage the supplier quality in an organisation. A. Supplier management, ... processes C. Supplier management, control processes D. Supplier maintenance, customisation processes

Last Answer : C. Supplier management, control processes

___________is the most common operating system for running CRM software A. UNIX B. Windows NT C. Windows Vista D. Windows XP

Description : ___________is the most common operating system for running CRM software A. UNIX B. Windows NT C. Windows Vista D. Windows XP

Last Answer : A. UNIX

Which is one of the most critical steps in the ERP implementation? A. Creation of Organisational Model B. Creation of Integrated Data Model C. Creation of Business Model D. Creation of Data Model

Description : Which is one of the most critical steps in the ERP implementation? A. Creation of Organisational Model B. Creation of Integrated Data Model C. Creation of Business Model D. Creation of Data Model

Last Answer : B. Creation of Integrated Data Model