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ECNG1012 : Engineering Science and Technology (Semester I- 2024/2025)
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Which of the following equations is used to calculate the RMS value of the triangular wave shown below?
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Ammeters have an extremely low internal resistance, which enables almost all the circuit current to flow through the meter to obtain an accurate reading.
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When measuring current or voltages with a analog ammeter or analog voltmeter respectively, it is always better to start measuring with the highest ranges first and then gradually step down to the lower ranges. If excessive current or voltage is supplied to the meters, the galvanometer inside can be damaged when the needle tries to exceed its full scale deflection. It may also burn the meter if its rating is exceeded.
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What is the internal resistance of the 3V range of an analog voltmeter, if the sensitivity of the voltmeter is 1000Ω/V?
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Which of the following equations is used to calculate the RMS of the square wave shown below?
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The output impedance of the function generator is important because it determines :
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What is the internal resistance of the 100mA range of an analog ammeter, if the full scale deflection voltage drop of the ammeter is 50mV?
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In order for the oscilloscope to accurately reproduce the voltage magnitude between two points, its input resistance must be high, relative to the resistance seen looking into the two measuring points.
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The input impedance of an oscilloscope determines:
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