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A transformer takes a current of 0.8A when its primary is connected to a 240 volt, 50Hz supply, the secondary being on open circuit. If the power absorbed is 72 watts, Determi
Very thin glass sheets are used to form these capacitors. The sheets are interleaved with aluminium foil and fused together to forms a solid block. These capacitors are smaller in
What are eddy currents? State how their effect is decreased in transformers. (b) Verify the ef?ciency of a 15 kVA transformer for the following conditions: (i) full load, un
Charging a Two-Sphere System by Induction Using a Negative Objects The below given animation depicts the induction procedure. Two neutral conducting spheres rest on top of insu
With the help of neat & labelled diagram. Explain the principle & working of a moving coil galvanometer. What is importance of radial magnetic field.
how to find magnetic moment and the principle behind the magnetometer?
Q. What is the density of energy states in metals? Obtain an expression for the density of states for free electron gas in metals. Ans. Density of energy state is define
A measuring jar or graduate Select several straight-sided glasses jars of assorted sizes. Olive bottles are very useful for the making of graduated cylinders. Paste a strip of
The op amp shown in Figure has an input bias current of 100nA at 20 ? C. Measure (a) The voltage gain, and (b) The output offset voltage due to the input bias current. (c
DESCRIBE DEWAR FLASK
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