Materials and Components
The most important set of specifications of transformer oil include

viscosity and flash point
dielectric strength and flash point
dielectric strength and viscosity
flash point and viscosity

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Materials and Components
Hall effect is observed in a specimen (metal or semi conductor) when it is carrying current and is placed in a magnetic field. The resultant electric field inside the specimen is

Normal to both current and magnetic field
In the same direction as current
In a direction anti parallel to magnetic field
None of these

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