DC Ammeter : Construction, Working and Temperature Compensation
What is DC Ammmeter? A DC ammeter is the instrument used for measuring the direct current (DC) flowing through an electrical circuit and is connected in series to the circuit
3 Methods of Magnetizing a Steel Bar
In this article, you will learn three principle methods of magnetizing a steel bar. If a piece of iron or steel is brought near either of the poles of a
How to Make a Wise Choice of Electronics for the Household?
In every house, the use of electronic gadgets has become essential due to the increasing urbanization. Even in rural areas these days, with the advancement of technology, electricity is being
Gramme Ring and Drum Wound Armature in DC Motors
A DC motor can be made using different types of armatures based on its application. There are 2 types of armatures. Gramme Ring Armature Drum Wound Armature Gramme Ring Armature
Damping Systems – Air friction, Fluid Friction & Eddy Current Damping
In this article, you will learn about four different types of damping systems namely air friction damping, fluid friction damping, eddy current damping and electromagnetic damping. Before going into the
Electrodynamometer Instruments – Ammeter, Voltmeter and Wattmeter
The electrodynamometer is a transfer-type instrument. A transfer-type instrument is one that may be calibrated with a dc source and then used without modification to measure AC. This requires the
Moving Iron Instruments – Attraction and Repulsion Type
The most common ammeters and voltmeters for laboratory or switch-board use at power frequencies are the moving iron instruments. These instruments can be constructed to measure current and voltage to
