Question 1 QUESTION 1 The input current drawn for an ac source line connected to a power converter is indicated in figure Q1‚ together with the ac input voltage of the line to neutral of the supply. The current waveform is flat-topped quasi-square of amplitude 150A. The ac source voltage is given by v = Vmax sin ω t where Vmax is 340 V‚ ω = 2π f ‚ where f is the supply frequency‚ at 50 Hz. vs 150 A 120° 60° −150 A 75° 120° 60° is sec Figure Q1 (i) Find the rms
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Chi-square tests 1. INTRODUCTION 1.1 χ2 distribution and its properties A chi-square (χ2) distribution is a set of density curves with each curve described by its degree of freedom (df). The distribution have the following properties: - Area under the curve = 1 - All χ2 values are positive i.e. the curve begins from 0 (except for df=1) increases to a peak and decreases towards 0 as its asymptote - The curve is skewed to the right‚ and as the degree of freedom increases‚ the
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Towards the Development of a Lodging Service Recovery Strategy John W. O’Neill Anna S. Mattila ABSTRACT. This article presents findings from a survey of 613 hotel guests and indicates that guests’ overall satisfaction regarding service failure and service recovery are higher when they believe that service failure is unstable and recovery is stable. Moreover‚ guests indicate they are more likely to return to the same hotel when they believe that service failure is unstable and recovery is stable
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Abstract The overall objective of this lab was to a digital oscilloscope to measure various signals. The goal of Part 1 was to measure the mean value‚ the frequency‚ peak to peak voltage‚ and the RMS voltage of a triangular input signal. To meet this goal‚ a function generator was used to generate a 1 kHz triangular wave signal with a 1 V amplitude‚ and the oscilloscope was used to measure the values of that signal. Using the oscilloscope‚ the mean value was found to be -37.6 mV‚ the RMS Voltage
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Stress and sleep quality estimation with the use of smart Wearable sensors 1 Harsha Puranik Harshpuranik44@gmail.com 1 2 S.S. Kataria nileshpatni@indiatimes.com Institute Of Knowledge College Of Engineering‚ Pune University of Pune 2 Amrutvahini College of Engineering‚ Sangamner University of Pune Abstract: The stress and poor sleep quality of a person may be used as two of several components for predicting the onset of mental health problems‚ in particular depression.
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A PAPER PRESENTATION ON ADVANCED ENERGY METER BY Mr. Ashish s. Khachane Prof. Ram Meghe Institute of Technology & Reseach ‚Badnera “ADVANCED ENERGY METER” ABSTRACT "Science is the study of the world as it is. Engineering is the creation of the world tomorrow" Science is basically "passive" observation of the universe as it exists to generate knowledge. Engineering is making
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1. Introduction to Power Engineering 1.1 Power System Functions The traditional power system is arranged as a hierarchy. Generators feed into a high voltage transmission system that facilitates bulk transfers of power over large distances. Connected to the transmission system are medium voltage distribution networks that take power from grid supply points and deliver it to the customers who are supplied a low voltage. For a lot of its history‚ the electricity supply industry has operated as
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PAIR TRADING STRATEGIES Presented by: Industry Guide: Faculty Guide: Anand Agrawal - 09206 Sulagn Patanaik - 09150 Mr. Vivek Gupta Prof. Devi Prasad Bedari & Dr. Jaba M. Gupta Company: CapitalVia Global Research Ltd. Road Map About CapitalVia Why Pair Trading? Project Objective Scope What is Pair Trading? Methodology Strategy Analysis Observations Findings Limitations Future Scope Pair Trading 1 November 2010 CapitalVia Global Research Ltd. Investment advisory firm Stock tips Commodity
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Predictability of Social Media Usage to Grade Averages IB Math Studies Spring 2013 Table of Contents: Introduction/Purpose……………………………………………………………..p.3 Data Collection Method……………………………………………………….....p. 3 - 4 Data Analysis: Chi-Squared Statistic Frequency Table…………………………………………………………p. 4 - 5 Contingency Table……………………………………………………….p. 5 – 6 Chi – Squared Statistic…………………………………………………...p. 7 Degrees of Freedom………………………………………………………p. 7 Critical Value……………………………………………………………
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Week 7 Homework Assignment Chapter 7 Circuit Analysis Techniques 15. Derive the Thevenin equivalent of the circuit shown in Figure 7.47a. Req= (R1+R2)//(R3+R4)= 5.2k//1.5k= 1164 x 10^3= 1.2kΩ Rth= Req+R5= 1.2kΩ+1kΩ= 2200 x 10^3= 2.2kΩ Vth= Vs= 9V 16. Derive the Thevenin equivalent of the circuit shown in Figure 7.47b. Req= R1+R2= 22+33= 55Ω Vth= Vs x R3/Req+R3+R4= 12V x 120Ω/55+120+51 = 6.37V Rth= (R1+R2)//(R3+R4)= (22+33)//(120Ω+51Ω)= 41.6Ω 17. Derive the Thevenin equivalent of the circuit shown
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