Tamil Nadu 10th Standard New Books 2026-27 PDF (Samacheer Kalvi) Download the Tamilnadu 10th new books for 2026-27 in PDF, free. These are the official Samacheer Kalvi 10th standard textbooks prepared by TNSCERT (State Council of Educational Research and Training, Tamil Nadu) and published on tnschools.gov.in/scert-textbook. Every book is listed below by medium, with a … Read more
What is electron drift velocity ? Electron Drift Velocity : Suppose that in a conductor, the number of free electrons available per m3 of the conductor material is n and let their axial drift velocity be ν metres/second. In time dt, distance travelled would be ν × dt. If A is area of cross-section of … Read more
परिभाषा: वर्तनी शब्द का अर्थ है- अनुसरण करना, अर्थात पीछे-पीछे चलना। भाषा के उच्चरित रूप या बोलने में जो कहा जाता है अथवा उच्चरित किया जाता है, उसी के अनुरूप या अनुसार लिखा भी जाता है; इसे ही वर्तनी कहते हैं। भाषा का लिखित रूप वर्तनी की सहायता लेता है। अतः भाषा के उच्चरित रूप को … Read more
MCQ ON ALTERNATORS Objective Questions Short notes Objective questions (Answers are given below) The frequency of voltage generated by an alternatorhaving 4-poles and rotating at 1800 r.p.m.is …….hertz.(a) 60 (b) 7200(c) 120 (d) 450. A 50-Hz alternator will run at the greatestpossible speed if it is wound for ……. poles.(a) 8 (b) 6(c) 4 (d) … Read more
Objective Questions Short notes Objective questions (Answers are given below) The ripple factor of a power supply is ameasure of(a) its filter efficiency(b) its voltage regulation(c) diode rating(d) purity of power output. The basic reason why a FW rectifier hastwice the efficiency of a HW rectifier is that(a) it makes use of a transformer(b) its … Read more