ECE :: Measurements and Instrumentation
- A permanent magnet moving coil ammeter has a coil resistance of 99ohm and Full Scale DeflectionFSD. current of 0.1mA. Shunt resistance is 1 ohm. Current through the meter at 0.5 F.S.D is
- The chemical effect of current is used in
- Some wire- wound resistors have bifilar winding. This type of winding is used to
- The pressure coil of a wattmeter should be connected on the supply side of the current coil when
- A resistor of 10kΩhms with 5% tolerance is connected in parallel with a 5kΩhms resistor of 10% tolerance. What is the tolerance limit for the parallel network?
- It is found that 10A current passes through a resistor of 10°hms. The resistor has 5% tolerance . The error in measurement of current can be as high as 5%. What is max error in measurement of power, calculated from measured value of I and the nominal value of resistor?
- The EMF of Weston standard cell is measured using
- Wagner earthing device is used to eliminate errors due to
- The multiplier and the meter coil in a voltmeter are in
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