From b1f5c3f8d6671b4331cef1dcebdf63b7a43a3a2b Mon Sep 17 00:00:00 2001 From: priyanka Date: Wed, 24 Jun 2015 15:03:17 +0530 Subject: initial commit / add all books --- 174/CH4/EX4.10/example4_10.sce | 38 ++++++++++++++++++++++++++++++++++++++ 174/CH4/EX4.10/example4_10.txt | 3 +++ 2 files changed, 41 insertions(+) create mode 100755 174/CH4/EX4.10/example4_10.sce create mode 100755 174/CH4/EX4.10/example4_10.txt (limited to '174/CH4/EX4.10') diff --git a/174/CH4/EX4.10/example4_10.sce b/174/CH4/EX4.10/example4_10.sce new file mode 100755 index 000000000..3ea25fd19 --- /dev/null +++ b/174/CH4/EX4.10/example4_10.sce @@ -0,0 +1,38 @@ +// To find voltmeter sensitivity on AC range +// Modern Electronic Instrumentation And Measurement Techniques +// By Albert D. Helfrick, William D. Cooper +// First Edition Second Impression, 2009 +// Dorling Kindersly Pvt. Ltd. India +// Example 4-10 in Page 81 + + +clear; clc; close; + +// Given data +R_m = 100; //Internal resistance of the movement in ohm +R_sh = 100; +I_fsd = 1*(10^-3); //current for full scale deflection +R_D1 = 400; +R_D2 = 400; +E_rms = 10; //AC range of the voltmeter + +//Calculations +disp('Assuming infinite reverse resistance'); +I_t = 2 *I_fsd; +E_dc = 0.45 * E_rms; +R_t = E_dc / I_t; +R_p = R_m *R_sh/(R_m+R_sh); +R_s = R_t - (R_D1 + R_p); +printf("(a) The value of the multiplier resistor required, R_s = %d ohm\n",R_s); +S = R_t / E_rms; +printf("(b) The sensitivity of the voltmeter on ac range, S = %d ohm/V",S); + +//Result +// Assuming infinite reverse resistance +// (a) The value of the multiplier resistor required, R_s = 1800 ohm +// (b) The sensitivity of the voltmeter on ac range, S = 225 ohm/V + + + + + diff --git a/174/CH4/EX4.10/example4_10.txt b/174/CH4/EX4.10/example4_10.txt new file mode 100755 index 000000000..fa9b08ae2 --- /dev/null +++ b/174/CH4/EX4.10/example4_10.txt @@ -0,0 +1,3 @@ +Assuming infinite reverse resistance +(a) The value of the multiplier resistor required, R_s = 1800 ohm +(b) The sensitivity of the voltmeter on ac range, S = 225 ohm/V -- cgit