Tiêu đề 2023-Apr-May-Basic Electrical & Electronics Engg.(AICTE).pdf ✅

A000113(024) A00911X024) secondary. turn in primary is equal to the EMF per turn in transformier winding. Show that the emf induced per (b) Derive an expression for the EMF induced in a 8 ) Working of an LED (d) Explain any twe ofthe following: 3. (a) State why the core of a transformer is laminated? 4 diode current. for the p-njunction diode. Derive the expresskn for (c) Explain the forward and reverse biased condition Unit-iII 230 V, 50 Hz What is its importance for an unbiased p-n junction? 8 depletion region is forned in a p-n junction diode. (b) What is biasing in diode? Explain in detail how =90V-, =180V istics. 4. (a) Explain the PN junction along with the V4 character 1.5 A Unit-IV R, R Coil between the current and supply voltage. and inductance of the coil and phase difference the coil are 90 V and 180 V. Calculate theresistance is 1.5 A and the voltage across the 8 load. Determine the transformer losses. unity power factor is 98% at rated load and at half transforners. diagrams. Draw the phasor diagran for both the transformers under the no koad conditkn with uitable (c) Give the comparison between ldeal and Practical |4| resistance and coil across 230 V, 50 Hz A.C. The supply current (d) An ohmic resistance is connected in series with a 20 kVA, 2500 V250V single phase transformer at (d) Explain the losses in transformer. The efficiency of
|6| () Seven segment display (i) Drift and diffusion current 5. (a) Write the difference between NPN and PNP transis tor. 4,790) Unit-V (b) Give the circuit arangement for obtaining input and output characteristics of transistor in Common emitter configuration. Sketch V-I characteristics and indicate the different regions of importance. (c) Explain the working of transistor as an Amplifier and as a switch. (d) Enumerate the advantages of Integrated Circuits (1Cs) and scale of integration. A000113(024) 4 8