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You are given following current-time graphs from two different sources: 2009 CBSE Physic class 101 Answer What is the use of optical character reader. cbse class vi-20151 AnswerHow to use technology to teach students?1 AnswerIn the circuit shown, transistors Q1 and Q2 are biased at a collector current of 2.6mA. Assuming that transistor current gains are sufficiently large to assume collector current equal to emitter current and thermal voltage of 26 mV, the magnitude of voltage gain1 AnswerFor a BJT the common base current gain α = 0.98 -gate-ece-20111 Answer Optimization technology?1 AnswerThe current density in a medium is given by 𝐽⃗ = 400 𝑠𝑖𝑛𝜃 2𝜋(𝑟2 + 4) 𝑎𝑟 Am−2 The total current and the average current density flowing through the portion of a spherical surface r = 0.8 m, 𝜋 12 ≤ 𝜃 ≤ 𝜋 4 ,1 AnswerConsidering the transformer to be ideal, the transmission parameter A of the 2– port network shown in the figure below is GATE-Instrumentational-Engineering-20131 AnswerIn a full wave rectifier, the input is from 30-0-30 V transformer. The load and diode forward resistances are 100 Ω and 10 Ω respectively. Calculate the average voltage, DC output power, ac input power, rectification efficiency and p1 AnswerWith a neat block diagram explain optical fiber communicati on system. 1 Answer Draw a ray diagram to show the formation of image of an object placed between infinity and the optical centre of a concave lens. -2008 CBSE Physic class 101 AnswerWhy is an alternating current considered to be advantageous over direct current for long range transmission of electric energy? -CBSE physics class 101 AnswerA variation of 5 μA in the base current produces a change of 1.2 mA in the collector current. Collector to emitter voltage remains fixed during this variation. Calculate the current amplification factor β dc .0 AnswerHow have advances in technology, especially television technology, affected the development of contemporary cricket?cbse-class9-history-20161 AnswerThe following arrangement consists of an ideal transformer and an attenuator, which attenuates by a factor of 0.8. An ac voltage VWX1 = 100V is applied across WX to get an open circuit voltage VYZ1 across YZ. Next, an ac voltage VYZ2 = 100V1 Answer A student performs an experiment to study the magnetic effect of current around a current carrying straight conductor. He reports that -CBSE physics class 101 AnswerA loop carrying current I lies in the x-y plane as shown in the figure. The unit vector ˆ k is coming out of the plane of the paper. The magnetic moment of the current loop is - jee main 20121 Answer Mark True or False for following statements: (Science-Ncert class 6)1 Answer Features of current account-University of calicut -2013-Banking & insurance1 AnswerThe potential difference between the terminals of an electric heater is 60 V when it draws a current of 4 A from the source. What current will the heater draw if the potential difference is increased to 120 V? -CBSE Physics 1 Answer