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Q. How is a galvanometer converted into (a) an ammeter and (b) a voltmeter?
A galvanometer is transformed into an ammeter by connecting a low resistance in parallel with it. The low resistance associated in parallel with the galvanometer is called shunt resistance. A galvanometer is able be converted into a voltmeter by connecting a high resistance in series with it.
Explain the Merits of Vacuum Diode over Semiconductor Diode (i) Vacuum Diodes can withstand high reverse voltages (ii) Vacuum Diodes can operate at fairly high temperature
Consider the sketch of the electromagnet in the figure below. Which components could you change to increase or reduces the strength of the electromagnet? Describe your answer.
Q. What are the various energy losses of a transformer? Energy losses in a transformer: (a) Hysteresis loss (b Copper loss (c) Eddy current loss (Iron loss) (d)
Two particles execute S.H.M of same amplitude and frequency ,along the same straight line from same mean position.They cross one another without collision,when going in opposite di
It is a method of depositing a thin layer of one metal over one more metal by the method of electrolysis. The articles of cheap solids are coated with valuable metals like silver a
Obtain Relativistic expression for the kinetic energy of the particle. Derive mass energy relation. Show that total energy E and momentum P are related, where m is rest mass and
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compare the contributions of faraday and oersted to electromagnetic theory
ways and rules of finding moment of force
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