Can you provide me the previous year question paper for B Tech1st semester - Basic Electrical Engineering - Examination of BPTU (Biju Patnaik University of Technology)?

[ReenaK]

The previous year question paper for B Tech1st semester - Basic Electrical Engineering - Examination of BPTU (Biju Patnaik University of Technology) is as follows:


How the current will grow when a d.c. supply of certain magnitude is suddenly switched on to a series resistance-inductance (R-L) load circuit? Derive the expression for the growth of current with respect to time. What will be the steady state value of the current through the inductance L?


State and explain the superposition principle with an example


A current of 7 A flows through a non-inductive resistance in series with a coil when supplied at 240 V, 50 Hz If the voltage across the resistance is 120 V and across the coil, it is 195 V, calculate (i) the impedance, reactance, and resistance of the coil, (ii) the power absorbed by the coil and (iii) the total power. Draw the complete phasor diagram.


State and explain the maximum power transfer principle with an example


A magnetic circuit comprises two parts in series, each of uniform cross sectional area (c.s.a.). The two parts are: (a) iron of length 150 mm and c.s.a. 75 mm2; and (b) an airgap of length of 0.5 mm and c.s.a. 85 mm2. A coil of 1500 turns is wound on the iron part, and the flux density in the airgap is 0.5 T. The relative permeability of iron is 2000. Estimate the coil current assuming all the flux to pass through the given magnetic circuit. Neglect fringing.


Describe the various methods of excitation provided in d.c. machines. Show the field connection diagram of a long shunt d.c. compound machine.



Question Paper B Tech1st sem - Basic Electrical Engineering - Exam Biju Patnaik University of Technology)