Figure Q2(a) shows a circuit configuration of DC ammeter by using PMMC instrument. Determine and analyze the following: i You are required to modify a PMMC instrument with a full-scale deflection current of 2 mA into a 0-150 mA ammeter application. Given the internal resistance, Rm of the meter is 100 2, find the required shunt resistor, Rsh need to be installed into the circuit. i By using the modified circuit as in (i), you are required to improve that circuit which capable to measure a current up to 1 A. What will be the value of the new shunt resistor? Hint: add up a new shunt resistor with original Rsh is maintain.

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Figure Q2(a) shows a circuit configuration of DC ammeter by using PMMC instrument.
Determine and analyze the following:
i. You are required to modify a PMMC instrument with a full-scale deflection current of
2 mA into a 0-150 mA ammeter application. Given the internal resistance, Rm of the
meter is 100 2, find the required shunt resistor, Rsh need to be installed into the circuit.
ii.
By using the modified circuit as in (i), you are required to improve that circuit which
capable to measure a current up to 1 A. What will be the value of the new shunt
resistor? Hint: add up a new shunt resistor with original Rsh is maintain.
Transcribed Image Text:Figure Q2(a) shows a circuit configuration of DC ammeter by using PMMC instrument. Determine and analyze the following: i. You are required to modify a PMMC instrument with a full-scale deflection current of 2 mA into a 0-150 mA ammeter application. Given the internal resistance, Rm of the meter is 100 2, find the required shunt resistor, Rsh need to be installed into the circuit. ii. By using the modified circuit as in (i), you are required to improve that circuit which capable to measure a current up to 1 A. What will be the value of the new shunt resistor? Hint: add up a new shunt resistor with original Rsh is maintain.
PMMC instrument
Rm
ww
Rsh
Figure Q2(a)
Transcribed Image Text:PMMC instrument Rm ww Rsh Figure Q2(a)
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