The core construction is like spokes of a wheel in following transformer:

The core construction is like spokes of a wheel in following transformer: 

(A) Berry Type Transformer (B) Core Type Transformer (C) Shell Type Transformer (D) None of the above
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Answer :

The core construction is like spokes of a wheel in following transformer:  Berry Type Transformer

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Related questions

Material used for construction of transformer core is usually?

Last Answer : Material used for construction of transformer core is usually silicon steel.

State any four characteristics of core type transformer.

Description : State any four characteristics of core type transformer.

Last Answer : Characteristics of core type transformer: i) It has one window. ii) It has one magnetic circuit. iii) Core surrounds the winding. iv) Average length of core is more. v) Area of cross ... Better cooling for winding. vii) Mechnical strength is comparatively less. viii) Repair and maintenance is easy.

A 40 kVA transformer has a core loss of 400 W and a full load copper loss of 800 W. The

Description : A 40 kVA transformer has a core loss of 400 W and a full load copper loss of 800 W. The proportion of full load at maximum efficiency is

Last Answer : A 40 kVA transformer has a core loss of 400 W and a full load copper loss of 800 W. The proportion of full load at maximum efficiency is 0.707

The desirable properties of transformer core material are

Description : The desirable properties of transformer core material are  (1) low permeability and low hysteresis loss. (2) high permeability and high hysteresis loss. (3) high permeability and low hysteresis loss. (4) low permeability and hysteresis loss.

Last Answer : The desirable properties of transformer core material are high permeability and low hysteresis loss.

The main purpose of using core in a transformer is to

Description : The main purpose of using core in a transformer is to (A) decrease iron losses (B) eliminate magnetic hysteresis (C) reduce reluctance of the common magnetic circuit (D) prevent eddy current loss

Last Answer : Reduce Relucatnce of the common magnetic circuit.

When secondary of a current transformer is open-circuited its iron core will be?

Description : When secondary of a current transformer is open-circuited its iron core will be?

Last Answer : When secondary of a current transformer is open-circuited its iron core will be hot because of heavy iron losses taking place in it due to high flux density.

The size of a transformer core will depend on?

Description : The size of a transformer core will depend on?

Last Answer : The size of a transformer core will depend on frequency and area of the core.

Reduction in core losses and increase in permeability are obtained with transformer employing?

Description : Reduction in core losses and increase in permeability are obtained with transformer employing?

Last Answer : Reduction in core losses and increase in permeability are obtained with transformer employing core built-up of laminations of cold rolled grain oriented steel.

Why does the core of a transformer need to be laminated?

Description : Why does the core of a transformer need to be laminated?

Last Answer : Transformer cores are laminated to reduce eddy current loss.

why the Transformer core is laminated?

Last Answer : Transformer core is laminated to reduce Eddy current losses.

Explain construction and working principle of single phase transformer.

Description : Explain construction and working principle of single phase transformer.

Last Answer : A single phase transformers is an electrical device that accepts single-phase AC power and outputs single-phase AC. PRINCIPLE... The single-phase transformer works on the principle of ... and secondary windings. Thin steel laminations shall be employed to prevent power losses from the core.

How to Build a Water Wheel Pump

Description : How to Build a Water Wheel Pump

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How to True a Bike Wheel

Description : How to True a Bike Wheel

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With a neat diagram explain pelton wheel turbine.

Description : With a neat diagram explain pelton wheel turbine.

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State the material used for making (1) Magnetic Core (2) Fuse element

Description : State the material used for making (1) Magnetic Core (2) Fuse element  

Last Answer : The material used for making of:  (1) Magnetic Core : Iron, cobalt, Nickel, CRGO, HRGO , silicon steel  (2) Fuse Element: Tin- lead wire, Tinned copper wire 

Core type transformers are popular in___________.

Description : Core type transformers are popular in___________.  (A) High voltage applications (B) Low voltage applications (C) All of the above (D) None of the above

Last Answer : Core type transformers are popular in High voltage applications

A single core lead sheathed cable with two dielectrics of permittivity 4 and 3, respectively, are subjected to

Description : A single core lead sheathed cable with two dielectrics of permittivity 4 and 3, respectively, are subjected to same maximum stress. If the conductor diameter is 1.5 cm, the outer diameter of the first dielectric is (A) 1.125 cm (B) 1.5 cm (C ) 2 cm (D) 8 cm

Last Answer : A single core lead sheathed cable with two dielectrics of permittivity 4 and 3, respectively, are subjected to same maximum stress. If the conductor diameter is 1.5 cm, the outer diameter of the first dielectric is 2 cm 

A single core cable is designed to work for a single phase system with a peak voltage of 220 kV. The maximum

Description : A single core cable is designed to work for a single phase system with a peak voltage of 220 kV. The maximum permissible stress in the dielectric is not to exceed 20 kV/mm. For economical size, the overall core diameter of the cable is (A) 28.2 mm (B) 26.4 mm (C) 24.4 mm (D) 22.0 mm

Last Answer : A single core cable is designed to work for a single phase system with a peak voltage of 220 kV. The maximum permissible stress in the dielectric is not to exceed 20 kV/mm. For economical size, the overall core diameter of the cable is 22.0 mm

A ferrite core has less eddy current loss than an iron core because?

Description : A ferrite core has less eddy current loss than an iron core because?

Last Answer : A ferrite core has less eddy current loss than an iron core because ferrites have high hysteresis.

The armature core of a D.C. generator is usually made of?

Last Answer : The armature core of a D.C. generator is usually made of silicon steel.

When a conductor carries more current on the surface as compared to core, it is due to?

Last Answer : When a conductor carries more current on the surface as compared to core, it is due to skin effect.

In DC generators lamination core are generally made of?

Description : In DC generators lamination core are generally made of?

Last Answer : In DC generators lamination core are generally made of silicon steel.

Where is core type and shell type construction suitable for a transformer?

Description : Where is core type and shell type construction suitable for a transformer?

Last Answer : Core type transformers are popular in High voltage applications like Distribution transformers, Power transformers, and obviously auto transformers. Where as, Shell type transformers are ... voltage applications like transformers used in electronic circuits and power electronic converters etc

Material used for construction of transformer core is usually A. 0.4mm to 0.5 mm B. 4mm to 5 mm C. 14mm to 15 mm D. 25mm to 40 mm

Description : Material used for construction of transformer core is usually A. 0.4mm to 0.5 mm B. 4mm to 5 mm C. 14mm to 15 mm D. 25mm to 40 mm

Last Answer : d) 25mm to 40mm

Will rain water damage a building under construction?

Description : Will rain water damage a building under construction?

Last Answer : Often, yes, if you do it wrong. It's usually not a problem if the bones of the building get a bit wet before the roof goes on; things dry out easily before you install insulation and ... buildings are all metal, glass and concrete until the exterior is done, so even less problems with water.

How thick do you make the exterior and interior walls of a residence if you are using Post and Beam construction instead of standard Timber Frame?

Description : How thick do you make the exterior and interior walls of a residence if you are using Post and Beam construction instead of standard Timber Frame?

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How long have construction workers been laying sheet of plastic on the ground before laying the foundation?

Description : How long have construction workers been laying sheet of plastic on the ground before laying the foundation?

Last Answer : https://en.wikipedia.org/wiki/Vapor_barrier

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Description : How do construction cranes rise up?

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Help with very basic construction, generalized building code info?

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Description : How can I find out about new construction near my land?

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Last Answer : It so happened that we often make excessive demands on anything, wanting to save money and get high quality as a result. Especially in the case of building a house. Is it possible to save on ... immersed in the ground. Usually there are two of them - the method of indentation and screwing in.

What paintwork materials are used in construction?

Description : What paintwork materials are used in construction?

Last Answer : What paintwork materials are used in construction? Whatever the building material, it needs protection from external factors. Whether it be wood, concrete or metal, it doesn't matter. The ... plastered surfaces. Silicate paints are also capable of imparting good fire resistance to wood.  

Explain construction and working of AC servomotor.

Description : Explain construction and working of AC servomotor.

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Draw construction of IGBT.

Description : Draw construction of IGBT.

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Draw construction of SCR using two transistor model. Explain its operation.

Description : Draw construction of SCR using two transistor model. Explain its operation.

Last Answer : Two Transistor Model of SCR or Thyristor

Draw construction of Megger and write operating principle of it.

Description : Draw construction of Megger and write operating principle of it.

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Explain construction & working of attraction type M.I. instrument with neat diagram.

Description : Explain construction & working of attraction type M.I. instrument with neat diagram.

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Explain construction & working of electrodynamometer type wattmeter.

Description : Explain construction & working of electrodynamometer type wattmeter.

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Classify the transformers based on the construction, frequency and power.

Description : Classify the transformers based on the construction, frequency and power.

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The construction of a synchronous motor resembles?

Last Answer : The construction of a synchronous motor resembles an alternator.

The operating point of a protective current transformer is near the

Description : The operating point of a protective current transformer is near the

Last Answer : The operating point of a protective current transformer is near the Ankle point

Which of the following is not a part of transformer installation?

Description : Which of the following is not a part of transformer installation?  (A) Conservator (B) Breather (C) Buchholz Relay (D) Exciter

Last Answer : Which of the following is not a part of transformer installation?  (A) Conservator (B) Breather (C) Buchholz Relay (D) Exciter

The inrush current of a transformer at no load is maximum if the supply voltage is switched on

Description : The inrush current of a transformer at no load is maximum if the supply voltage is switched on  (1) at peak voltage value (2) at zero voltage value (3) at half voltage value (4) at 0.866 time voltage value

Last Answer : At 0.866 time voltage value

IDMT relays are used to protect the transformer against :

Description : IDMT relays are used to protect the transformer against :  (A) Internal short -circuits (B) Open circuits (C) External short circuits (D) Oil leakage

Last Answer : IDMT relays are used to protect the transformer against : External short circuits

To prevent mal-operation of differentially connected relay while energizing a transformer, the relay

Description : To prevent mal-operation of differentially connected relay while energizing a transformer, the relay restraining coil is based with  (1) second harmonic current  (2) third harmonic current  (3) fifth harmonic current  (4) seventh harmonic current

Last Answer : To prevent mal-operation of differentially connected relay while energizing a transformer, the relay restraining coil is based with  second harmonic current 

To protect the power transformer (Y-Y with neutral grounded) against fault, what type of connection do the CTs have ?

Description : To protect the power transformer (Y-Y with neutral grounded) against fault, what type of connection do the CTs have ?

Last Answer : To protect the power transformer (Y-Y with neutral grounded) against fault, what type of connection do the CTs have ? Δ-Δ connection

The inverse definite mean time relays are used for over current and earth fault protection of transformer against?

Last Answer : The inverse definite mean time relays are used for over current and earth fault protection of transformer against internal short-circuits.