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

Printed Pages -6+2=8 Roll No. A000113(024) (AICTE Scheme) B. Tech. (First Semester) Examination, April-May 2023 finging (Common to all Branches : P1 Group) RAIPUR) IUTE OR TEGHNO BASIC ELECTRICAL and ELECTRONICS ENGINEERING Maximum Marks : 100 Time Allowed : Three hours Minimum Pass Marks : 35 Unit-I LIBRAR?". Note : Atempt all guestions. Part (a) is compulsory and solve any two part from (b), (c) and (d) of each question. A000113(024) 1. (a) Explain the following terns : Leakage flux and A9010 4 PTO
A00110) A000113(024) () R-LC series circuit 0) R-L series circuit 40A circuits : angle, power ahd power factor in the fotkowing (c) Derive the expression for cuncn, impodnce, phae 120A figre. (c) Define superposition theorem. Calculate current /, and I, using superposition theorem in the circuit of 8 A.C. sinusoidal wave. derive the expressions for both the quantities rn factor. 2. (a) Explain the folowing tems : fom facior and peak 40 04 60 Unit-I 3.Q 3V 20 10 62 10Q shown below.using Kirchofr's Voltage Law (KVL) in the (b) Calculate the current flowing through 52 resistr fringing and leakageflects. and cast iron are 800 and 166 respectively. Neglect 8x 104 Wb. The relative permeability of cast steel mm. Find the AT required to |21 |3| mean Square value for an A.C. wIveform. Aso (b) Define the following terms : Avernge Value and Root circuit produce a flux having of a reluctance of equal to an air gap of 0 2 section of cast iron and cast steel, with each joint area of 10 cm'. The ring is made up of semicircular ) A ring has a diameter of 21 cm and cross sectional
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