What is Hysteresis Loss ?

What is Hysteresis Loss ?
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1 Answer

Answer :

Hysteresis Loss Wh = nh / B ^ 1.6 max fv
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Related questions

What is Hysteresis Loss ?

Description : What is Hysteresis Loss ?

Last Answer : We know that transformers are made of electromagnetic materials like iron , ferrite cores etc. Now when this transformer is repeatedly magnetized and de-magnetized by an alternating current, the ... , generators , fans. However, generators and transformers try to control this hysteresis loss.

What are the ways to reduce system loss ?

Description : What are the ways to reduce system loss ?

Last Answer : ( a) Monitor meter readings and coordinate with bills , ( b) Collection of outstanding bills , ( c) Detection of illegal electricity connections , ( d) Improvement of billing system , ( e) Elevation of transmission voltage

What is System Loss ?

Description : What is System Loss ?

Last Answer : Answer : System loss is the loss of power due to transmission of energy from the point of production to the point of use , waste of machinery including the own use of the production center , technical and non-technical losses etc.

What is Unemployment System Loss ?

Description : What is Unemployment System Loss ?

Last Answer : ( a) Consumption loss , ( b) Billing loss , ( c) Collection loss

How many types of system loss in the context of Bangladesh ?

Description : How many types of system loss in the context of Bangladesh ?

Last Answer : There are two types of system loss. Namely- (a) technical loss , ( b) unskilled loss

How to reduce eddy current loss ?

Description : How to reduce eddy current loss ?

Last Answer : Answer : If you want to reduce the current loss, you must make the laminations of the core as thin as possible. And if the laminations can be well laminated or insulated then the eddy current loss can be greatly reduced.

What is Eddie Current Loss ?

Description : What is Eddie Current Loss ?

Last Answer : The iron loss of the transformer depends on the maximum flux density and the supply frequency. Since the transformer is always fixed i.e. fixed frequency and supply and fixed then here core and ... here is considered as constant or unchanged loss. And this is basically known as Eddie Current Loss.

What is the reason why wattmeter indicates only copper loss during transformer short circuit test ?

Description : What is the reason why wattmeter indicates only copper loss during transformer short circuit test ?

Last Answer : Answer : The voltage applied in this test is limited to 5% to 10% of the rated voltage . As a result, much less mutual flux ( Φm) is produced in the core than normal mutual flux. Since ... Φm² , the core loss is practically zero. Thus the whole of the wattmeter reading is considered copper loss.

Why is core loss zero during short circuit test ?

Description : Why is core loss zero during short circuit test ?

Last Answer : The voltage applied by the varicus on the high side is very low , so the mutual flux in the core is also very low. So core loss is zero.

What is Copper Loss ?

Description : What is Copper Loss ?

Last Answer : Copper loss is the loss due to the ohmic resistance of the primary and secondary windings of the transformer.

On what does the core loss of a transformer depend ?

Description : On what does the core loss of a transformer depend ?

Last Answer : The core loss of the transformer depends on the voltage applied to the primary.

What is Stress Loss ?

Description : What is Stress Loss ?

Last Answer : Magnetic loss and mechanical loss together are called stress loss.

What effect does increased heat loss have on resistance ?

Description : What effect does increased heat loss have on resistance ?

Last Answer : As the heat decreases, the resistance decreases. Note: In the case of semiconductors, the resistance increases as the heat decreases. As the heat increases, the resistance increases.

Which of the following losses is/are present in every direct current generator armature? A. Winding copper loss B. Core eddy current loss C. Magnetic hysteresis loss D. All of the above.

Description : Which of the following losses is/are present in every direct current generator armature? A. Winding copper loss B. Core eddy current loss C. Magnetic hysteresis loss D. All of the above.

Last Answer : Answer: D

Materials that retain a large part of their magnetization, after the magnetizing force is removed, are said to have _____________. A. low hysteresis loss B. high flux density C. high permanence D. high permeability

Description : Materials that retain a large part of their magnetization, after the magnetizing force is removed, are said to have _____________. A. low hysteresis loss B. high flux density C. high permanence D. high permeability

Last Answer : Answer: C

As an armature revolves within a magnetic field, friction is developed between the rotated magnetized particles as they pass through each magnetization cycle. This results in ____________. A. copper loss B. eddy-current loss C. hysteresis loss D. armature reaction

Description : As an armature revolves within a magnetic field, friction is developed between the rotated magnetized particles as they pass through each magnetization cycle. This results in ____________. A. copper loss B. eddy-current loss C. hysteresis loss D. armature reaction

Last Answer : Answer: C

The heating of conductors as a result of resistance in a distribution circuit causes a power loss expressed as _____________. A. line droop B. line loss C. IR drop D. hysteresis

Description : The heating of conductors as a result of resistance in a distribution circuit causes a power loss expressed as _____________. A. line droop B. line loss C. IR drop D. hysteresis

Last Answer : Answer: B

Mention the factors on which hysteresis loss depends?

Description : Mention the factors on which hysteresis loss depends?

Last Answer : (i) Quality and amount of iron in the core (ii) Flux density and (iii) Frequency.

How to minimize Hysteresis loss?

Description : How to minimize Hysteresis loss?

Last Answer : By using good magnetic material. By using less value of Magnetic flux density

What is hysteresis loss in transformer?

Description : What is hysteresis loss in transformer?

Last Answer : The magneto motive force or mmf applied in the transformer core is alternating. For every cycle due to this domain reversal, there will be extra work done. For this reason, there will be a consumption of electrical energy which is known as Hysteresis loss of transformer.

Straight silicon steel (containing Si from 0.5 to 5%) because of their low hysteresis loss and high magnetic permeability are used for electrical appliances. Which of the following electrical appliances made of silicon steel contains maximum percentage of silicon (about 4%)? (A) Armature of small motors/generators (B) Generators and small motors (C) Induction motors (D) High frequency transformers

Description : Straight silicon steel (containing Si from 0.5 to 5%) because of their low hysteresis loss and high magnetic permeability are used for electrical appliances. Which of the following electrical ... /generators (B) Generators and small motors (C) Induction motors (D) High frequency transformers

Last Answer : (D) High frequency transformers

The loss of strength in compression which occurs, when there is a gain of strength in tension due to over loading is called (A) Bauschinger effect (B) Hooke's effect (C) Hysteresis (D) Relaxation

Description : The loss of strength in compression which occurs, when there is a gain of strength in tension due to over loading is called (A) Bauschinger effect (B) Hooke's effect (C) Hysteresis (D) Relaxation

Last Answer : (A) Bauschinger effect

Materials subjected to rapid reversal of magnetism should have (a) large area oiB-H loop (b) high permeability and low hysteresis loss (c) high co-ercivity and high retentivity (d) high co-ercivity and low density

Description : Materials subjected to rapid reversal of magnetism should have (a) large area oiB-H loop (b) high permeability and low hysteresis loss (c) high co-ercivity and high retentivity (d) high co-ercivity and low density

Last Answer : (b) high permeability and low hysteresis loss

The energy required to magnetize and demagnetize is called a) Saturation b) Retentivity c) Coercivity d) Hysteresis lossThe energy required to magnetize and demagnetize is called a) Saturation b) Retentivity c) Coercivity d) Hysteresis loss

Description : The energy required to magnetize and demagnetize is called a) Saturation b) Retentivity c) Coercivity d) Hysteresis loss

Last Answer : d) Hysteresis loss

The loss of energy over each A.C cycle magnetization and demagnetization of transformer, is called: a. Magnetization loss b. Hysteresis loss c. Demagnetization loss d. energy loss

Description : The loss of energy over each A.C cycle magnetization and demagnetization of transformer, is called: a. Magnetization loss b. Hysteresis loss c. Demagnetization loss d. energy loss

Last Answer : c. Demagnetization loss

A transformer: a. Works on A.C. only b. Works on D.C only c. Works on A.C. and D.C d. Has no hysteresis loss

Description : A transformer: a. Works on A.C. only b. Works on D.C only c. Works on A.C. and D.C d. Has no hysteresis loss

Last Answer : a. Works on A.C. only

70] Silicon steel used in laminations mainly reduces A. Hysteresis loss B. Eddy current losses C. Copper loss D. All of the above

Description : 70] Silicon steel used in laminations mainly reduces A. Hysteresis loss B. Eddy current losses C. Copper loss D. All of the above

Last Answer : A. Hysteresis loss

69 In case there are burrs on the edges of the laminations of the transformer, it is likely to result in A. Vibrations B. Noise C. Higher eddy currents loss D. Higher hysteresis loss

Description : 69 In case there are burrs on the edges of the laminations of the transformer, it is likely to result in A. Vibrations B. Noise C. Higher eddy currents loss D. Higher hysteresis loss

Last Answer : C. Higher eddy currents loss

43 The purpose of providing an iron core in a transformer is to A.Provide support to windings B. Reduce hysteresis loss C. decrease the reluctance of the magnetic path D. reduce eddy current losses

Description : 43 The purpose of providing an iron core in a transformer is to A.Provide support to windings B. Reduce hysteresis loss C. decrease the reluctance of the magnetic path D. reduce eddy current losses

Last Answer : C. Decrease the reluctance of the magnetic path

39 Which loss is not common between a transformer and rotating machines? A. Eddy current loss B. Copper loss C. Windage loss D. Hysteresis loss

Description : 9 Which loss is not common between a transformer and rotating machines? A. Eddy current loss B. Copper loss C. Windage loss D. Hysteresis loss

Last Answer : A. Eddy current loss

24 Transformer cores are laminated in order to A. simplify its construction B. minimise eddy current loss C. reduce cost D. reduce hysteresis loss

Description : 24 Transformer cores are laminated in order to A. simplify its construction B. minimise eddy current loss C. reduce cost D. reduce hysteresis loss

Last Answer : B. Minimise eddy current loss

17. Which type of loss is not common to transformer and rotating machines? A. Eddy current loss B. Copper loss C. Hysteresis loss D. Windage loss

Description : 17. Which type of loss is not common to transformer and rotating machines? A. Eddy current loss B. Copper loss C. Hysteresis loss D. Windage loss

Last Answer : D. Windage loss

Hysteresis loss least depends on (A) Frequency. (B) Magnetic field intensity. (C) Volume of the material. (D) Grain orientation of material.

Description : Hysteresis loss least depends on (A) Frequency. (B) Magnetic field intensity. (C) Volume of the material. (D) Grain orientation of material.

Last Answer : (D) Grain orientation of material.

A ferrite core has less eddy current loss than an iron core because ferrites have (A) High resistance. (B) Low resistance. (C) Low permeability. (D) High hysteresis.

Description : A ferrite core has less eddy current loss than an iron core because ferrites have (A) High resistance. (B) Low resistance. (C) Low permeability. (D) High hysteresis.

Last Answer : (A) High resistance.

The armature of a dc machine is laminated to reduce: (A) Eddy current loss (B) Hysteresis loss (C) copper losses (D) friction and windage losses

Description : The armature of a dc machine is laminated to reduce: (A) Eddy current loss (B) Hysteresis loss (C) copper losses (D) friction and windage losses

Last Answer : Ans: A Thinner the laminations, greater is the resistance offered to the induced e.m.f., smaller the current and hence lesser the I2R loss in the core.

Which of the following properties is not necessarily desirable in the material for transformer core? A. Mechanical strength B. Low hysteresis loss C. High thermal conductivity D. High permeability

Description : Which of the following properties is not necessarily desirable in the material for transformer core? A. Mechanical strength B. Low hysteresis loss C. High thermal conductivity D. High permeability

Last Answer : C) high thermal conductivity

A 220/440 V, 50 Hz, 5 KVA, single phase transformer operates on 220V, 40Hz supply with secondary winding open circuited. Then (A) Both eddy current and hysteresis losses decreases. (B) Both eddy current and hysteresis losses increases. (C) Eddy current loss remains the same but hysteresis loss increases. (D) Eddy current loss increases but hysteresis loss remains the same.

Description : A 220/440 V, 50 Hz, 5 KVA, single phase transformer operates on 220V, 40Hz supply with secondary winding open circuited. Then (A) Both eddy current and hysteresis losses decreases. (B) Both ... same but hysteresis loss increases. (D) Eddy current loss increases but hysteresis loss remains the same.

Last Answer : (A) Both eddy current and hysteresis losses decreases.

State the factors affecting hysteresis loss.

Description : State the factors affecting hysteresis loss.

Last Answer : i) Flux density ii) Frequency iii) Volume of the magnetic material iv) Nature of magnetic material

A transformer at 25 Hz develops 20 W hysteresis loss and 50 W eddy current loss. If the applied voltage and

Description : A transformer at 25 Hz develops 20 W hysteresis loss and 50 W eddy current loss. If the applied voltage and frequency are doubled, the new core losses are (A) 140 W (B) 180 W (C) 240 W (D) 480 W

Last Answer : A transformer at 25 Hz develops 20 W hysteresis loss and 50 W eddy current loss. If the applied voltage and frequency are doubled, the new core losses are 240 W

Hysteresis loss in a transformer depends upon: -

Description :  Hysteresis loss in a transformer depends upon: -  a) both voltage and frequency b) voltage alone c) frequency alone d) none of these

Last Answer :  Hysteresis loss in a transformer depends upon: - both voltage and frequency

If the area of hysteresis loop of a material is large, the hysteresis loss in this material will be?

Description : If the area of hysteresis loop of a material is large, the hysteresis loss in this material will be?

Last Answer : If the area of hysteresis loop of a material is large, the hysteresis loss in this material will be large.

In a magnetic material hysteresis loss takes place primarily due to?

Description : In a magnetic material hysteresis loss takes place primarily due to?

Last Answer : In a magnetic material hysteresis loss takes place primarily due to it high retentivity.

What is the difference between eddy current and hysteresis loss?

Description : What is the difference between eddy current and hysteresis loss?

Last Answer : Loss occurred by magnetising and demagnetising process is called histerisis loss and the current flowed due to the magnetic field produced by the electric field applied is called eddy current losses

Explain hysteresis loss, eddy current loss and skin effect limitations with reference to magnetic material.

Description : Explain hysteresis loss, eddy current loss and skin effect limitations with reference to magnetic material.

Last Answer : Hysteresis loss: Hysteresis loss is a loss which occurs due to the friction of magnetic domain due to the change in magnetic field in ferromagnetic material like iron. Hysteresis loss causes power loss ... loss in transformer is given by, We=Kef2Kf2Bm2watts Skin effect limitations:

What is the conductivity of molar ?

Description : What is the conductivity of molar ?

Last Answer : The density of a solution as cm. When one mole of electrolytic substance is dissolved in it, the conductivity obtained by multiplying it by the relative conductivity of the solution is called molecular conductivity of the solution .

How do I purchase a product ?

Description : How do I purchase a product ?

Last Answer : From Alibaba you can purchase products by paying MASTER CARD or through bank.

What is an analog signal ?

Description : What is an analog signal ?

Last Answer : Signals whose values ​​change continuously are called analog signals. For example- voltage of electricity supplied to the house.

What is Zener Diod ?

Description : What is Zener Diod ?

Last Answer : Zener diode is a special type of diode which, like ordinary diode, not only conducts current in the forward direction , but also in the opposite direction if the voltage exceeds the level of breakdown ... diode is to use the shunt regulator and the voltage reference as the voltage of the circuit.

What is the multiplying factor of shunt ?

Description : What is the multiplying factor of shunt ?

Last Answer : Answer : The ratio of load or matte current to ammeter current is called shunt multiplying power.

What is ammeter shunt ?

Description : What is ammeter shunt ?

Last Answer : A small amount of radial coupling in parallel with the coil to increase the range of ammeter is called ammeter shunt.