1. A d'Arsonval ammeter circuit is shown in Figurel When the full scale current through the meter is 3 mA, the corresponding voltage across the meter coil is 150 mV. Answer the following questions: (a) Calculate the value of the shunt resistors RA that allows to measure a full-scale current reading of 5 A and 100 mA respectively (b) How much resistance is added to a circuit when the 5 A ammeter in partla is inserted to measure current? (c) Explain a technique to use the same meter as a voltmeter to measure full-scale voltage of 100 V 150 mV 3 mA RA Ammeter Figure 1: d'Arsonval galvanometer

1. A d'Arsonval ammeter circuit is shown in Figurel When the full scale current through the meter is 3 mA, the corresponding voltage across the meter coil is 150 mV. Answer the following questions: (a) Calculate the value of the shunt resistors RA that allows to measure a full-scale current reading of 5 A and 100 mA respectively (b) How much resistance is added to a circuit when the 5 A ammeter in partla is inserted to measure current? (c) Explain a technique to use the same meter as a voltmeter to measure full-scale voltage of 100 V 150 mV 3 mA RA Ammeter Figure 1: d'Arsonval galvanometer

Electricity for Refrigeration, Heating, and Air Conditioning (MindTap Course List)

10th Edition

ISBN:9781337399128

Author:Russell E. Smith

Publisher:Russell E. Smith

Chapter5: Components, Symbols, And Circuitry Of Air-conditioning Wiring Diagrams

Section: Chapter Questions

Problem 27RQ: Change the following normally open elements from the de-energized position to the energized...

See similar textbooks

Similar questions

An ammeter has been designed by indirect method with current ranges 1A, and 5A, if PMMC meter have internal resistance of 50 (2 and half scale current of 0.5 mA. Ra and Rb will be --- ohm Ra= 0.05005 , Rb=0.01001 Ra = 0.04004 , Rb = 0.01001 Ra= 0.05005 Rb= 0.04004
Three resistance 14. 5 Q, 25. 5 Q and 60 Q are connected in series across 200 V. What will be the voltage drop across 14. 5 Q (a) 29 V (b) 13. 5 V (c) 14 V (d) 18 V
The conductance of a 9230 resistance is a) 1.08 * 10-3 mho b) 1.08 * 10-4 mho c) 1.02 * 10-3 mho d) 1.02 * 104 mho
When the voltage source is turned off in a simple circuit consists of a resistor and an inductor, the rate of decrease of the current is proportional to the current. The current is 40 amperes at the moment that the switch is off and dies down to 15 amperes after 0.01 sec. Determine the current in 0.02 sec. 3.375 amperes 4.25 amperes 5.625 amperes 6.025 amperes
In the figure below, explain in what situation ammeter A reading will be nonzero.
How much resistance must be inserted in series with a 0.96-H inductance to limit the current to 0.25 A from a 120-V 60 Hz power line?
Consider the following statements :A clamper circuit 1. adds or subtracts a dc voltage to a waveform 2. does not change the waveform 3. amplifies the waveform Which are correct? * O 1,2 O 1,3 O 1, 2, 3 O 2,3
A dc ammeter has an internal resistances of 0.1 ohm. A shunt of 1.010 milliohm is connected to the ammeter. What is the multiplier of the set-up?
Q5 Figure 6 Show the calculation and steps please
Given the zener voltage at 9V and the zener power at 1W, what is the range of allowable values of Iz (operating values). Choices: 0.11A 22mA to 89mA 9A 0.11A to 9A Plss show complete solution
115V incandescent lamps A and B are connected in series across a 230V source. If the lamp A is rated 75W and lamp B is rated 50w. Determine the current drawn by the series connection.
Moving to the next question prevents changes to this answer. Quèstion 1 A direct current (DC) of 4A flows into a previously uncharged 20 pF capacitor for 3 ms. Determine the voltage between the plates. O A. None of the given answers O B. 200 V OC. 800 V O D. 500 V O E. 300 V OF. 600 V A Moving to the next question prevents changes to this answer.