Megger is a portable instrument for measuring high resistances in which the voltage range can be controlled by using a voltage selector switch. It is not only used for measurement of high resistances (insulation resistance), but also can be used for testing of insulation resistance. One more advantage is that deflection of the instrument is […]
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It is also the gas discharge lamp in which sodium is used, so this is called as the sodium vapour lamp. Fig. 1. Sodium Vapour Lamp.
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Thevenin’s Theorem is very useful particularly when the current in one branch of a network is to be determined. Statement of Thevenin’s Theorem Thevenin’s Theorem states that for the purpose of determining the current through a resistor RL (called load resistance) connected across any two terminals A and B of a linear bilateral network with
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