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Induction type Voltmeters and Ammeters Induction type Voltmeters and Ammeters (instruments) are used only for A.C. measurements and can be used either as ammeter, voltmeter or wattmeter. However, the induction …
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Insulation Tester (Megger) Insulation Tester (Megger) is a portable instrument used for testing the insulation resistance of a circuit and for measuring resistances of the order of megaohms which are …
Insulation Tester Megger Read More
Moving coil Instruments – Dynamometer type instrument There are two types of Moving coil Instruments (i) Moving coil Instruments – permanent magnet moving Coil type (PMMC) which can be used …
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Moving coil Instruments – Permanent Magnet Moving Coil There are two types of Moving coil Instruments (i) Moving coil Instruments – permanent magnet moving Coil type (PMMC) which can be …
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Extension of Range by Shunts and Multipliers (i) As Ammeter : The Extension of range by shunts and multipliers of the moving-iron instrument, when used as an ammeter, can be …
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Moving Iron Instruments There are two basic forms of Moving Iron InstrumentsĀ i.e. the attraction type and the repulsion type. The operation of the attraction type depends on the attraction of …
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Electrical Measuring Instruments Principle of Operation Electrical Measuring Instruments Principle of Operation depends for their action on one of the many physical effects of an electric current or potential and …
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Automobile Battery Charger Using Full-wave Rectifier The battery charger shown in Figure A is used to recharge run-down lead-acid batteries in automobiles without removing them from their original mountings and …
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Charging Systems Charging System of batteries In various installations, batteries are kept floating on the line and are so connected that they areĀ being charged when load demands are light and …
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Electrical Characteristics of the Lead-acid Cell The three important Electrical Characteristics of the Lead-acid Cell, of interests to an engineer, are (1) voltage (2) capacity and (3) efficiency. 1. Voltage …
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