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Q. Explain working of Ammeter?
In order to measure the current through a wire or line of a circuit, an ammeter is connected in series with the line. A practical ammeter can usually be modeled as a series combination of an ideal ammeter and an internal resistance RI. The potential difference between the two terminals of an ideal ammeter is zero, which corresponds to zero internal resistance. There are what are known as dc ammeters and ac ammeters. An ac ammeter usually measures the rms value of the time-varying current. Note that for the ammeter to be inserted for measuring current, the circuit has to be broken, whereas for the voltmeter to be connected for measuring voltage, the circuit need not be disassembled.
Multimeters that measure multiple ranges of voltage and current are available in practice. Ohmmeters measure the dc resistance by the use of Ohm's law. A multimeter with scales for volts, ohms, and milliamperes is known as VOM. An ohmmeter should not be used to measure the resistance of an electronic component that might be damaged by the sensing current.
Q. A toroid with a circular cross section is shown in Figure. It is made from cast steel with a relative permeability of 2500. The magnetic flux density in the core is 1.25 Tmeasur
matlap code to solve the fast decoupled method
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Increase in HT and LT Ratio It is well known that for high HT/LT ratio, the losses will be low. The losses for a given quantum of power supplied through a line are inversely p
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Question 01 Convert the following binary numbers to its specified number system 111.101 (2) to octal 10111 (2) to decimal 0.1010 (2) to hexadecimal 1011.11 (2)
Normal 0 false false false EN-IN X-NONE X-NONE High Frequency Electronic Ballast
Q. What is a Modem? Modems are generally used to interface digital circuits to transmit information on analogue channels such as telephone systems. Modem (from modulator-demodu
8085 is a one address microprocessor. In 8085 interrupts are classified by hardware and software interupts.
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