In a transformer the resistance between its primary and secondary should be
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Transformers
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Gas is usually not liberated due to dissociation of transformer oil unless the oil temperature exceeds
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For given applied voltage, with the increase in frequency of the applied voltage
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In an actual transformer the iron loss remains practically constant from noload to fullload because
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The chemical used in breather is
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In case of a double cage induction motor, the inner cage has
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If the supply frequency to the transformer is increased, the iron loss will
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The term 'cogging' is associated with
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Minimum voltage regulation occurs when the power factor of the load is
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The highest voltage for transmitting electrical power in India is
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The secondary winding of which of the following transformers is always kept closed?
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If a transformer is switched on to a voltage more than the rated voltage
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The transformer oil should have _____ volatility and _____ viscosity.
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The degree of mechanical vibrations produced by the laminations of a transformer depends on
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The thickness of laminations used in a transformer is usually
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The core used in high frequency transformer is usually
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A transformer transforms
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In a transformer the resistance between its primary and secondary is
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A transformer can have regulation closer to zero
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Power transformers are designed to have maximum efficiency at
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