Which of the following is a vector quantity?
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Electrical Engineering · all questionsMagnetism And Electromagnetism
Magnetism And Electromagnetism
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What is the magneto-motive force (mmf) of a wire with 8 turns carrying three amperes of current?
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Magnetism of a magnet can be destroyed by
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Strength of an electromagnet can be increased by
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What is the magneto-motive force in a 75-turn coil of wire when there are 4 A of current through it?
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A magnetic field exists around
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What will be the magnetic potential difference across the air gap of 2 cm length in magnetic field of 200 AT/m?
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When an iron piece is placed in a magnetic field
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Temporary magnets are used in
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One maxwell is equal to
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Which of the following is not a unit of flux?
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The magnetism left in the iron after exciting field has been removed is known as
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The materials having low retentivity are suitable for making
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The retentivity (a property) of material is useful for the construction of
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If the steel disk in a crankshaft position sensor has stopped with the tab in the magnet's air gap, the induced voltage
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The unit of flux is the same as that of
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A keeper is used to
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A permanent magnet
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Two infinitely long parallel conductors in vacuum any separated 1 metre between centers >then a current of 1 ampere flows the. uk each conductor, produce on each other a force of
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A coil of wire is placed in a changing magnetic field. If the number of turns in the coil is decreased, the voltage induced across the coil will
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