Describe with working of LCR meter for measurement of inductance.

Describe with working of LCR meter for measurement of inductance. 
by

1 Answer

Answer :

working of LCR:- • A LCR meter (Inductance (L), Capacitance (C), and Resistance (R) test equipment used to measure the inductance, capacitance and, resistance of a component. • It works on the principle of impedance measurement • LCR Meter works on principals of AC & DC Bridges • The device under test is subjected to an AC voltage source. • The LCR meter detects the voltage over and the current through the device under test. • From the ratio of these, the meter can determine the magnitude of the impedance. • The phase angle between the voltage and current is also detected • in case of L-R or inductances measurements have the elements in series (as would be encountered in an inductor coil) [D setting ] • That C-R capacitances measurements have the elements in parallel (as would be encountered in measuring a capacitor with a leaky dielectric) [Q setting ] 

by

Related questions

For measurement of inductance having high value, we should use?

Last Answer : For measurement of inductance having high value, we should use Hay's bridge.

For measurement of mutual inductance we can use?

Last Answer : For measurement of mutual inductance we can use Heaviside bridge.

Draw and describe working of electronic energy meter.

Description : Draw and describe working of electronic energy meter.

Last Answer : working of electronic energy meter:- 1. CT reduces current to reasonable value for current scaling network. 2. Voltage & current scaling networks reduce proportionally the voltage & ... The ADC converts the square wave frequency analog output to display the energy in watthour. 

For measurement of radio frequency ac signals __________ type meter is used

Description : For measurement of radio frequency ac signals __________ type meter is used

Last Answer : For measurement of radio frequency ac signals thermo-couple type meter is used

Explain working of Weston type frequency meter.

Description : Explain working of Weston type frequency meter.

Last Answer : Weston Type Frequency Meter: There are two fixed coils marked as A and B. Each coil divided into two equal parts and are fixed such that their magnetic axis are perpendicular to each ... leading to deflections in either direction depending on the currents there in, due to changed impedances.

effect of inductance and capacitance on performance of transmission line.

Description : effect of inductance and capacitance on performance of transmission line.

Last Answer : Following are the effect on performance of transmission line:  1. Due to inductance (L) voltage drop in transmission line produces.  2. Capacitor (C) draws charging current ... , transmission line efficiency, voltage regulation & also power factor of transmission line gets affected. 

What is inductance?

Description : What is inductance?

Last Answer : Inductance is the property of Material by which it opposes the any change of magnitude or direction of electric current passing through the conductor. The inductance is denoted by L. The unit of inductance is Henry (H).

Self inductance formula

Description : Self inductance formula

Last Answer : Self inductance formula

Self induced voltage across an inductance

Description : Self induced voltage across an inductance

Last Answer : Self induced voltage across an inductance

lt the length, number of turns and area of a coil are doubled, the inductance of the coil

Description : lt the length, number of turns and area of a coil are  doubled, the inductance of the coil

Last Answer : lt the length, number of turns and area of a coil are  doubled, the inductance of the coil is quadrupled

The initial rate of rise of current through a coil of inductance 10 H when suddenly...

Description : The initial rate of rise of current through a coil of inductance 10 H when suddenly connected to a D.C. supply of 200 V is_______Vs.

Last Answer : The initial rate of rise of current through a coil of inductance 10 H when suddenly connected to a D.C. supply of 200 V is 20 Vs

When both the inductance and resistance of a coil are doubled the value of?

Description : When both the inductance and resistance of a coil are doubled the value of?

Last Answer : When both the inductance and resistance of a coil are doubled the value of time constant remains unchanged.

The inductance of a coil can be increased by?

Description : The inductance of a coil can be increased by?

Last Answer : The inductance of a coil can be increased by choosing core material having high relative permeability.

Inductance of coil?

Description : Inductance of coil?

Last Answer : Inductance of coil increases with the increase in supply frequency.

Inductance of a coil Varies?

Description : Inductance of a coil Varies?

Last Answer : Inductance of a coil Varies as directly as the cross-sectional area of magnetic core and inversely as the length of the iron path.

Inductance affects the direct current flow?

Description : Inductance affects the direct current flow?

Last Answer : Inductance affects the direct current flow at the time of turning on and off.

What is the reciprocal of inductance?

Description : What is the reciprocal of inductance?

Last Answer : This term is not exist

What is the unit of inductance?

Last Answer : Unit of inductance is Henry denoted by capital H .

State the impact of inductance and resistance on transmission line performance

Description : State the impact of inductance and resistance on transmission line performance

Last Answer : Impact of inductance on transmission line: 1) It causes IXL drop in transmission line which affects regulation. 2) It is the only parameter which decides power transmission capacity of line i. ... is very small, it causes losses, temperature rise& poor voltage regulation so it cannot be neglected

Inductance

Description : Inductance

Last Answer : Inductance

For 11kV line the inductance per km per phase will be of the order of:

Description : For 11kV line the inductance per km per phase will be of the order of:  (A) 1 H (B) 0.1 H (C) 1 mH (D) 0.1 mH

Last Answer : For 11kV line the inductance per km per phase will be of the order of: 1 mH

The self inductance of a coil can be measured using

Description : The self inductance of a coil can be measured using (A) Wien’s Bridge (B) Schering Bridge (C) Anderson’s Bridge (D) Wheatstone Bridge

Last Answer : The self inductance of a coil can be measured using Anderson’s Bridge

The bridge method commonly used for finding mutual inductance is

Description : The bridge method commonly used for finding mutual inductance is (A) Heaviside Campbell bridge (B) Schering bridge (C) De Sauty bridge (D) Wien bridge

Last Answer : The bridge method commonly used for finding mutual inductance is Heaviside Campbell bridge

If an inductance is connected in one arm of bridge and resistances in the remaining three arms?

Last Answer : If an inductance is connected in one arm of bridge and resistances in the remaining three arms the bridge cannot be balanced.

In an Anderson bridge, the unknown inductance is measured in terms of?

Last Answer : In an Anderson bridge, the unknown inductance is measured in terms of known capacitance and resistance.

State how pressure measurement can be done using Dead weight tester.

Description : State how pressure measurement can be done using Dead weight tester.

Last Answer : The handle is fully drawn out and the oil is allowed to enter in the cylinder (i.e. gauge and piston) The weight to be measured is placed on the platform. Now the handle is turned ... of the area of the piston and the pressure indicated on the gauge is equal to the weight under measurement.

Define measurement and state the significance of electrical measurement system.

Description : Define measurement and state the significance of electrical measurement system.

Last Answer : Measurement: Measurement is essentially a process in which magnitude of a quantity is determined in comparison with another similar quantity with significant units. OR The measurement of a given ... x) The measurement conforms the validity of hypothesis and also adds to its understanding.

Name two methods for measurement of low, medium and high resistance. Give one advantage and one limitation of V- I method.

Description : Name two methods for measurement of low, medium and high resistance. Give one advantage and one limitation of V- I method.

Last Answer : Methods for measurement of low resistance:  1. Ammeter voltmeter method  2. Kelvin's bridge method  3. Ohm meter method  4. Potentiometer method  5. Digital/analog multi-meter ... must be infinity for perfectly accurate measurement which is not possible.  2. Connection errors.

State the significance of term measurement.

Description : State the significance of term measurement. 

Last Answer : Measurement is the quantitative comparison between unknown quantities with known standard. For doing this process there is need of physical device, called as measuring instrument. The measurement confirms the validity of the hypothesis and also adds to its understanding.

Explain significance and purpose of electrical measurement system.

Description : Explain significance and purpose of electrical measurement system.

Last Answer : ➢ Significance of Electrical Measurement System  1. The measurement is required for measurement of all physical quantities for e.g speed, velocity, temperature, pressure etc.  2. All electrical ... 4. These standards and references may changes time to time, area to area person to person 

State any two disadvantages of one wattmeter method of measurement of 3 phase power.

Description : State any two disadvantages of one wattmeter method of measurement of 3 phase power.

Last Answer : State any two disadvantages of one wattmeter method of measurement of 3 phase power. Disadvantages of one wattmeter method:- 1. Only used for balanced load 2. It can not be used for ... connection then neutral point must be available 4. Delta connection must be opened to connect current coil.

Explain V- I method of measurement of medium resistance.

Description : Explain V- I method of measurement of medium resistance. 

Last Answer : In this method, use suitable source, ammeter and voltmeter and connect them as shown in the above diagram. Take reading of voltmeter and ammeter, then value of resistance = R = V/I Ω To minimise the error take 4 to 5 observation for the same resistance and take their average.

working of distortion factor meter with block diagram

Description : working of distortion factor meter with block diagram

Last Answer : Working : Initially the switch S is kept at position 1.The attenuator gets excluded and the bridge T network is adjusted for full suppression of fundamental frequency and hence we get ... is obtained on the meter.Thus the total rms distortion is indicated by the reading of attenuator. 

Draw the diagram and explain the working of ferrodynamic type frequency meter.

Description : Draw the diagram and explain the working of ferrodynamic type frequency meter. 

Last Answer : Ferrodynamic type frequency meter: (Electrical resonance type frequency meter): It consists of a fixed coil. The supply whose frequency is to be measured is connected across it. This coil ... so selected that the moving coil takes up a convenient position when frequency is of normal value. 

With a neat sketch explain working of 1 phase dynamometer type power factor meter.

Description : With a neat sketch explain working of 1 phase dynamometer type power factor meter.

Last Answer : Working of 1 phase dynamometer type power factor meter : The current coil is connected in series with load. Two pressure coils marked as A and B are connected across the supply terminals ... becomes stationary and the pointer shows steady deflection corresponding to the power factor of the load. 

Write the working of L-C-R meter with suitable sketch.

Description : Write the working of L-C-R meter with suitable sketch.

Last Answer : LCR meter: A LCR meter (Inductance L, Capacitance C, and Resistance R) test equipment used to measure the inductance, capacitance and, resistance of a component. It works on the principle ... relative change in magnitude of the repetitive variations of the voltage and current known as amplitudes.

Describe principle of operation of Doppler type ultrasonic flow meter with diagram.

Description : Describe principle of operation of Doppler type ultrasonic flow meter with diagram. 

Last Answer : Diagram: Working:  The flow meter consists of a crystal transducer mounted outside the pipe in which flow is to be measured. This transducer is a piezoelectric crystal which ... , so the frequency of the reflected wave is shifted to particle velocity, according to Doppler principle.

Describe the procedure for working of paging system.

Description : Describe the procedure for working of paging system.

Last Answer : Pager is a Simplex Communication Device. Paging Systems are communication systems that send messages to a subscriber. Message can be numeric or alphanumeric. Paging Systems are used to notify a subscriber ... message is sent by sender to his pager and the message will be displayed in the LCD.

Describe the working principle of photoelectric pickup type tacho-generator.

Description : Describe the working principle of photoelectric pickup type tacho-generator.

Last Answer : Working: Working principle: The light passes through the holes available on the rotating disc with a specific interval, depends on the angular speed of disc having equidistant holes. The frequency of this light pulses ... by N=f/HS  N=speed  f=frequency  Hs=holes on the disc

Units of Measurement

Description : Units of Measurement

Last Answer : 1 horse power is 745.7 watts 1 horse power = work equal to lifting 550 lbs of weight to one foot for one second 1 calorie is equal to 4.2 Joules 1 barrel is equal to ... often chlorine or bromine. Use: as solvents, as aerosol propellants, in refrigeration. It is commonly used in refrigerator.

List the different level measurement methods.

Description : List the different level measurement methods. 

Last Answer : Liquid Level Measurement Direct method 1. Hook type 2. Sight glass gype 3. Float type 4. Dip stick Indirect method 1. Hydraustatic pressure type 2. Electrical type a) Capacitance level indicator b) Radiation level detector c) Ultrasonic level gauge 3. Radar type

Draw Bourdon tube with LVDT setup for pressure measurement.

Description : Draw Bourdon tube with LVDT setup for pressure measurement.

Last Answer : Bourdon tube with LVDT setup for pressure measurement.

sketch time period measurement by CRO.

Description : sketch time period measurement by CRO.

Last Answer : Horizontal sweep is turned ON and the display appealing on the screen is adjusted by varying different control knobs provided on the front panel of CRO, till the signal is suitably displayed ... Where m=Number of division in one complete cycle n=Setting of time base =Time/Division

different types of errors occurs in measurement.

Description : different types of errors occurs in measurement.

Last Answer : Generally errors are classified into three types: systematic errors, random errors and blunders. 1) Gross Errors 2) Random Errors 3) Systematic Errors Instrumental Errors Environmental ... to wrong observations or reading in the instruments particularly in case of energy meter reading. 

tern null as it applies to bridge measurement.

Description : tern null as it applies to bridge measurement.

Last Answer : Null measurements balance voltages so that there is no current flowing through the measuring device and, therefore, no alteration of the circuit being measured. Null measurements are generally more ... the use of standard voltmeters and ammeters, and they still have limits to their precision.

What are the factors influencing measurement errors?

Description : What are the factors influencing measurement errors?

Last Answer : The factor influencing measurement errors are accuracy, precision, range and bandwidth, sensitivity, resolution and uncertainty.

Measurement of a non -electrical quantity involves the following four subsystems:

Description : Measurement of a non -electrical quantity involves the following four subsystems:  a) amplifier block b) display block c) instrumentation block d) transducer block  The correct, sequence in which these block occur is  (1) d,a,c,b (2) d, c, a, b (3) a, c, b, d (4) a, b, c, d

Last Answer : Measurement of a non -electrical quantity involves the following four subsystems:  a) amplifier block b) display block c) instrumentation block d) transducer block  The correct, sequence in which these block occur is d,a,c,b

The bridge most suited for accurate measurement of relative permittivity of dielectric materials is

Description : The bridge most suited for accurate measurement of relative permittivity of dielectric materials is (A) Carey Foster Bridge (B) Anderson’s bridge (C) Heaviside Bridge modified by Campbell. (D) Schering Bridge.

Last Answer : The bridge most suited for accurate measurement of relative permittivity of dielectric materials is Schering Bridge.

Accurate measurement of very low resistances is possible with

Description : Accurate measurement of very low resistances is possible with (A) Megger (B) Wheatstone Bridge (C) Kelvin’s Double Bridge (D) Wagner’s Earthing Device

Last Answer : Accurate measurement of very low resistances is possible with Kelvin’s Double Bridge

Commonly used instruments in power system measurement are?

Last Answer : Commonly used instruments in power system measurement are induction.