Which of the following are useful in comparing the noise performance of receivers? Input noise voltageNoise figureNoise resistanceNoise temperature Select answer as per the following codes: ?->(Show Answer!)

1. Which of the following are useful in comparing the noise performance of receivers? Input noise voltageNoise figureNoise resistanceNoise temperature Select answer as per the following codes:

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MCQ->Which of the following are useful in comparing the noise performance of receivers? Input noise voltageNoise figureNoise resistanceNoise temperature Select answer as per the following codes:....

MCQ-> The passage given below is followed by a set of three questions. Choose the most appropriate answer to each question.The difficulties historians face in establishing cause-and-effect relations in the history of human societies are broadly similar to the difficulties facing astronomers, climatologists, ecologists, evolutionary biologists, geologists, and palaeontologists. To varying degrees each of these fields is plagued by the impossibility of performing replicated, controlled experimental interventions, the complexity arising from enormous numbers of variables, the resulting uniqueness of each system, the consequent impossibility of formulating universal laws, and the difficulties of predicting emergent properties and future behaviour. Prediction in history, as in other historical sciences, is most feasible on large spatial scales and over long times, when the unique features of millions of small-scale brief events become averaged out. Just as I could predict the sex ratio of the next 1,000 newborns but not the sexes of my own two children, the historian can recognize factors that made2 1 inevitable the broad outcome of the collision between American and Eurasian societies after 13,000 years of separate developments, but not the outcome of the 1960 U.S. presidential election. The details of which candidate said what during a single televised debate in October 1960 Could have given the electoral victory to Nixon instead of to Kennedy, but no details of who said what could have blocked the European conquest of Native Americans. How can students of human history profit from the experience of scientists in other historical sciences? A methodology that has proved useful involves the comparative method and so-called natural experiments. While neither astronomers studying galaxy formation nor human historians can manipulate their systems in controlled laboratory experiments, they both can take advantage of natural experiments, by comparing systems differing in the presence or absence (or in the strong or weak effect) of some putative causative factor. For example, epidemiologists, forbidden to feed large amounts of salt to people experimentally, have still been able to identify effects of high salt intake by comparing groups of humans who already differ greatly in their salt intake; and cultural anthropologists, unable to provide human groups experimentally with varying resource abundances for many centuries, still study long-term effects of resource abundance on human societies by comparing recent Polynesian populations living on islands differing naturally in resource abundance.The student of human history can draw on many more natural experiments than just comparisons among the five inhabited continents. Comparisons can also utilize large islands that have developed complex societies in a considerable degree of isolation (such as Japan, Madagascar, Native American Hispaniola, New Guinea, Hawaii, and many others), as well as societies on hundreds of smaller islands and regional societies within each of the continents. Natural experiments in any field, whether in ecology or human history, are inherently open to potential methodological criticisms. Those include confounding effects of natural variation in additional variables besides the one of interest, as well as problems in inferring chains of causation from observed correlations between variables. Such methodological problems have been discussed in great detail for some of the historical sciences. In particular, epidemiology, the science of drawing inferences about human diseases by comparing groups of people (often by retrospective historical studies), has for a long time successfully employed formalized procedures for dealing with problems similar to those facing historians of human societies. In short, I acknowledge that it is much more difficult to understand human history than to understand problems in fields of science where history is unimportant and where fewer individual variables operate. Nevertheless, successful methodologies for analyzing historical problems have been worked out in several fields. As a result, the histories of dinosaurs, nebulae, and glaciers are generally acknowledged to belong to fields of science rather than to the humanities.Why do islands with considerable degree of isolation provide valuable insights into human history?
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MCQ->Which of the following is not considered as a useful quantity in comparing noise performance of receivers?....

MCQ->Which one of the following is not a useful quantity for comparing the noise performance of receivers?....

MCQ-> Study the following information carefully and answer the question given below: Following are the conditions for selecting Senior Manager-General Banking in a bank: The candidate must (i) have secured at least 60 per cent marks in std XII. (ii)have secured at least 55 per cent marks in Graduation in any discipline (iii)have secured at least 60 per cent marks in Postgraduate degree/diploma in Management/Economics/statistics (iv)be at least 25 years and not more than 35 years as on 01-03-2010 (v)have post qualification work experience of at least 2 years as General Banking Officer in a bank (vi)have secured at least 40 per cent marks in the Personal interview In the case of a candidate who satisfies all the above conditions except (a)at (iii)above but has secured at least 60 per cent marks in CA or ICWA the case is to be referred to VP-Recruitment (b)at (vi)above but has secured at least 65 per cent marks in the written examination and at least 35 per cent marks in the personal interview the case is to be referred to president-Recruitment In each question below are given details of the one candidate You have to take one of the following course of action based on the information provided and the conditions and sub conditions given above and mark the number of that course of action as your answer You are not to assume anything other than the information provided in each question All these are given to you as on 01-03-2010Kesav Vora was born on 8th November 1978.He has secured 65 per cent marks in std XII and 60 per cent marks in Graduation He has secured 58 per cent marks in MA Economics and 60 per cent in ICWA He has been working in a bank as a generalist officer for the past two years after completing his education he has also secured 50 per cent marks in the written examination and 45 per cent marks in the personal interview
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