The remaining seven chapters have now been revised. For fifth edition of this book which was published in 1973, first ten Chapters could be revised. The last Chapter-17 of this book is written on the elements of fluidics. The new technology of Fluidics is the combination of fluid amplication and fluid logic. It is only in 1959 that the three engineers of USA Diamond Ordnance Fuse Lab came up with unique ideas involving the use of flowing fluids to accomplish control function. Preface to the Sixth Edition During the last decade new technology Late, Member, Planning Commission New Delhi The book has the merit that theoretical treatment has been well blended with descriptive and practical details, and should add to the reputation of Dr. To them the study of the Chapter on Dimensional Analysis is specially recommended. The book emphasises the need of young engineers acquiring great efficiency in using the tool of mathematics. This book has grown out of that enthusiasm and has made available to the students in a handy form, knowledge and information which will be of value not only for the completion of their courses but also for practising their profession. Lal has the enthusiasm that we associate with a teacher who remembers the days when he was a brilliant student.
This book thus covers a field of study which is rapidly gaining in importance. It is best that each knows as much of the others job as possible.
In a rapidly developing country, it is difficult to decide where the responsibility of the hydraulic engineer ends and that of hydraulic machine engineer begins. Such a laboratory as distinct from the Hydraulics Laboratory of the Civil Engineering Department, is now considered an essential feature in a modern Technical Institute. He was given the responsibility for organis ing and equipping the Hydraulic Machines Laboratory. Jagdish Lal joined the Indian Institute of Technology. Immediately on his return from Zurich, Dr. Dubs Ex-Head of Mechanical Engioeeffog Ex-Head of Hydraulics & Depart�ent Hydraulic Machines Section Jadavpur Urliversity Swiss Federal Institute of Technology (ETH) Calcutta Zt:::- h (Switzerlarid) Reprint Reprint Reprint Reprint Reprint Reprint Reprint Reprint Reprint Reprint Reprint Reprintġ994 1995 1997 20( 20( 2002 2001 2004 200= 2' " First Edition 1956 Second Edition 1959 (Revised & Enlarged) 1961 Third Edition (Revised & Enlarged) Reprint 1963 1965 Reprint Fourth Edition 1967 (Revised & Enlarged in MKS Units) 1968 Reprint 1969 Reprint 1971 Reprint 1972 Reprint 1973 Fifth Edition (Revised & Enlarged) 1974 Reprint 1975 Sixth Edition (Revised & Enlarged) 1977 Reprint 1978 Reprint ISBN 8-9 Printed by : Nirula Printers F-19, Navin Shandara ` Delhi - 110032
Anybody doing so shall be liable for legal action, Civil & Criminal, and will also be responsiblefor damages besides costs and consequences. Copyright © with the Publishers All Rights Reserved This publication or any part thereof cannot be reproduced, stored in a retrieval system, or transmitted/translated in any form or by any means, electronic, mechanical, photocopying, recording or otherwise by anyone without the prior written permission of the publishers. 1, Netaji Subhash Marg, New Delhi-110 002. Gupta, Managing Director, Metropolitan Book Co. BOOKSELLERS & PUBLISHERS 1, Netaji Subhash Marg, NEW DELHl�110002.Principal, Motilal Nehru Regional Engineering College, ALl.�tJABAD (India) HYDRAULIC MACH-1 N ES (.IN-CLUDING fLUIDICS)īy Dr, JAGDISH LAL D.
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