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A 2 KVA transformer has iron loss of 150 W and full load copper loss of 250 W. The maximum efficiency of the transformer will occur when the total loss is

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Important Questions on Physics

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Which finger shows the direction of current in Fleming’s left-hand rule?
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On which lake is the Golden Temple located?
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Five resistance of 0.2 ohms, 0.3 ohms, 0.4 ohms, 0.5 ohms & 12 ohms is connected in series with 12 V Battery. Find the current carried by 0.3 ohms resistance:
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Which law of physics states that the force between the two electric charges reduces to a quarter of its former value when the distance between them is doubled?
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An electric current of 0.5 A is passed for 8 minutes through the filament of an electric bulb. What will be the charge passing through the medium of the electric current?
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George Simon Ohm in whose honour we have the famous Ohm's Law, hailed from which country?
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Which of the following acids is used in-car batteries?
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_____ waves include visible light waves, X-rays, Gamma rays, Radio waves, Microwaves, ultraviolet waves and infrared waves.
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Volt×second is the unit of: 
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The commonly used safety fuse-wire is made up of _____.
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What is the name of the phenomena in physics and astronomy which involves the splitting of a spectral line into two or more components of slightly different frequency when the light source is placed in a magnetic field?
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The shape of the path of free electron in a metal is _____:

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1 horsepower = approximately _____ watts.
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What will be the direction of the magnetic field at the very bottom point of a horizontal power line, where the current flows from east to west when viewed from the west end?


 

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The rating for a fuse used in a household electric circuit is provided on the basis of:
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Electrical conductance through metals is called electronic conductance and it _____.
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1 horse power is equal to approximately ______ watts.
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Which of the following is a landlocked country?

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Earth Attracts particles because of _____:

 
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The flow of _____ is anti–clockwise in the given circuit:

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