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1. A meter being used for a 2-wire resistance measurement has an internal current source of 1 mA. If the meter's test leads have equal resistances of 0.06 ohm, what is the measured resistance for:

a. A resistor of actual value 0.5 ohm

b. A resistor of actual value 1K ohm

2. Refer to the Wheatstone Bridge diagram attached. If the galvanometer indicates zero when R1=110ohm, R2=10ohm, and R3 is set at 2.97Kohm, what is the value of Run known ohm.

3. Refer to the Wheatstone Bridge diagram. If R1=1ohm, R2=111ohm, Runknown= 1ohm, R3 is set at 1Kohm, and the battery is 9V:

a. What is the current flowing through the galvanometer ohm Use 60ohm for the internal galvanometer resistance in calculations.

b. The measurement range of the galvanometer is +/- 500µA. What is the ratio of galvanometer current to its maximum range of 500µA

c. Is there danger of damage to the galvanometer with these resistance values

Electrical & Electronics, Engineering

  • Category:- Electrical & Electronics
  • Reference No.:- M9831960

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