State the application of following materials : i) CRGO Silicon Steel ii) HRGO Silicon Steel iii) Amorphous metal iv) Bronze

State the application of following materials : i) CRGO Silicon Steel ii) HRGO Silicon Steel iii) Amorphous metal iv) Bronze 
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1 Answer

Answer :

Applications of CRGO Silicon Steel: 1) Manufacturing distribution and power transformer cores. 2) Manufacturing cores of audio transformers, ballast transformers, specialty transformers. 3) Manufacturing cores of large transformers, generators and motors. 4) Manufacturing stator and rotor of waterwheel generators. 5) Manufacturing stator and rotor of turbo generators 


ii) Applications of HRGO Silicon: 1) Manufacturing cores of small rating transformers 2) Manufacturing cores of small rating induction motors 3) Manufacturing water-wheel generators 4) Manufacturing turbo generators 


iii) Applications of Amorphous metal: 1) Making nanocomposites for field electron emission devices. 2) Manufacturing cores of high efficiency distribution transformers 3) Manufacturing cores of special transformers 4) Manufacturing magnetic sensors 5) Magnetomotive sensors 


iv) Applications of Bronze: 1) Making brush holders 2) Making knife switch blades 3) Making current carrying springs, bushings. 4) For extremely longer spans of overhead transmission lines, phosphor bronze conductors are used. 5) Cadmium bronze is used for making commutator segments and contact wires. 

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Related questions

Explain HRGO and CRGO. State benefits of CRGO for manufacturing of core.

Description : Explain HRGO and CRGO. State benefits of CRGO for manufacturing of core. 

Last Answer :  i) HRGO ( Hot -rolled grain oriented steel):  * To minimize the size of machine flux density should be high with small magneto motive force (MMF). Due to this iron loss will ... percentage of silicon which in turn increases the resistance compared to regular steel which reduces eddy currents. 

Distinguish between HRGO and CRGO on any four points.

Description : Distinguish between HRGO and CRGO on any four points.

Last Answer : HRGO CRGO Hot rolled grain oriented steel Cold rolled grain oriented steel Grain orientation is obtained by hot rolling to obtain soft steel to facilitates machining process. Grain orientation ... etc. Used in Transformer core, Machine cores etc. Less cost More cost

State Magneto-striction. Draw Hysteresis loop for : (i) High silicon steel (ii) Copper (iii) Soft iron (iv) Wood

Description : State Magneto-striction. Draw Hysteresis loop for : (i) High silicon steel (ii) Copper (iii) Soft iron (iv) Wood

Last Answer : Magneto-striction: It is the change in dimensions of ferro magnetic material when it is magnetized for eg. Silicon steel, iron or any ferromagnetic material.  i) Hysteresis loop for High silicon steel :  ... loop for Soft iron :  iv) Hysteresis loop for Copper and Wood : 

Which of the following is the advantage of using CRGO steel in transformers?

Description : Which of the following is the advantage of using CRGO steel in transformers? A) High magnetic flux density B) Low permeability C) Both A and B D) None of these

Last Answer : It definitely High Magnetic Flux Density since a crgo steel has always a more around 3% of silicon proportion among the remaining ferrite which make cold rolled grain oriented steel having high flux magnetic ... for more about the crgo core you can learn here https://nicoreindia.com/crgo-core/

What is Amorphous metal? Give one application of this metal.

Description : What is Amorphous metal? Give one application of this metal.

Last Answer : Amorphous Metals: Amorphous Metals means materials that do not possess a particular structure. Metal alloys typically possess crystalline atomic structure. The atoms are arranged in particular ... cores of special transformers d) Manufacturing magnetic sensors e) Magneto-motive sensors 

Bearings subjected to light load are made of (A) White metal (B) Phosphorous bronze (C) Monel (D) Silicon bronze

Description : Bearings subjected to light load are made of (A) White metal (B) Phosphorous bronze (C) Monel (D) Silicon bronze

Last Answer : (B) Phosphorous bronze

Of the following commonly used materials, the one that is not an alloy is (a) steel (b) brass (c) bronze (d) diamond

Description : Of the following commonly used materials, the one that is not an alloy is (a) steel (b) brass (c) bronze (d) diamond

Last Answer : Ans:(d)

Of the following commonly used materials, the one that is not an alloy is - (1) Steel (2) Brass (3) Bronze (4) Copper

Description : Of the following commonly used materials, the one that is not an alloy is - (1) Steel (2) Brass (3) Bronze (4) Copper

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Of the following commonly used materials, the one that is not an alloy is (1) Steel (2) Brass (3) Bronze (4) Copper

Description : Of the following commonly used materials, the one that is not an alloy is (1) Steel (2) Brass (3) Bronze (4) Copper

Last Answer : Copper

During preparation of amorphous silicon, the product is washed with hydrofluoric acid to

Description : During preparation of amorphous silicon, the product is washed with hydrofluoric acid to

Last Answer : remove unreacted silica.

During preparation of amorphous silicon, product is washed with

Description : During preparation of amorphous silicon, product is washed with

Last Answer : dilute hydrochloric acid to dissolve magnesium oxide.

Amorphous silicon is obtained by heating silica with

Description : Amorphous silicon is obtained by heating silica with

Last Answer : magnesium powder.

What happens when amorphous silicon is heated?

Description : What happens when amorphous silicon is heated?

Last Answer : When amorphous silicon is heated in air, it oxidizes at the surface level & catches fire.

Compare the properties of amorphous and crystalline silicon

Description : Compare the properties of amorphous and crystalline silicon

Last Answer : morphous silicon It is a brown powder It does not conduct electricity at low temperatures. It is more reactive than crystalline silicon When heated in air, it oxidizes at the surface level ... electricity It is less reactive than amorphous silicon It does not burn in air even when heated

What is the role of the following in the extraction of amorphous silicon? a) Hydrochloric acid b) hydrofluoric acid

Description : What is the role of the following in the extraction of amorphous silicon? a) Hydrochloric acid b) hydrofluoric acid

Last Answer : a) Hydrochloric acid is used to dissolve magnesium oxide b) Hydrofluoric acid is used to remove unreacted silica

Briefly explain the extraction of amorphous silicon.

Description : Briefly explain the extraction of amorphous silicon.

Last Answer : Finely powdered silica (sand or quartz) is mixed with magnesium powder and heated in a fire clay crucible. Magnesium oxide and silicon are formed

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Description : Select insulating materials for following parts : (i) Insulation between heating element and base plate of electric iron. (ii) Insulation used over copper or aluminium conductor used for making coils. (iii) Transformer bushings. (iv) Insulation between transmission line and pole.

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Description : Identify the alloy containing a non-metal as a constituent in it. (1) Bronze (2) Invar (3) Steel

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What is amorphous metal material? Give any three properties of amorphous metal.

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In calculus formation, the epitaxic concept is one of the theories. Which of the following is true: a. Mineralisation occurs when calcium and phosphate content is high. b. The presence of matrix would start initial formation of nucleus. c. The amorphous materials would convert to calcium phosphate and hydroxy phosphate.

Description : In calculus formation, the epitaxic concept is one of the theories. Which of the following is true: a. Mineralisation occurs when calcium and phosphate content is high. b. The presence of ... of nucleus. c. The amorphous materials would convert to calcium phosphate and hydroxy phosphate.

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Description : Arrange the following teaching process in order (in) relating the present knowledge with the previous knowledge (ii) evaluation (iii) reteaching (iv) formulating objectives (v) presentation of materials Options: A) (i), (ii), (iii), (iv ... iii), (i) , (ii) D) (iv), (i) , ( v), (ii), (iii)

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Last Answer : c. i, ii, iii, iv 

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Last Answer : b. i, ii, iii 

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