B.Tech. I & II Semester
Examination, June 2025
Grading System (GS)
Max Marks: 70 | Time: 3 Hours
Note:
i) Attempt any five questions.
ii) All questions carry equal marks.
iii) Assume any suitable data if required.
a) State and explain Kirchhoff's current and voltage law.
b) For the circuit shown in Fig (i) find the current in 2$\Omega$ resistor.
Answer (a): To be posted here.
Answer (b): To be posted here.
a) State and explain Superposition theorem.
b) Find the current through 5-ohm resistance in Fig (ii) using mesh current analysis.
Answer (a): To be posted here.
Answer (b): To be posted here.
a) Define the following with respect to alternating quantity.
i) R.M.S. value
ii) Peak value
iii) Average value
iv) Instantaneous value
b) A 4 ohm resistor is connected to a 10 mH inductor across a 100 V, 50 Hz voltage source. Find the input current, voltage across resistor and inductor, power factor of the circuit and the real power consumed to the circuit.
Answer (a): To be posted here.
Answer (b): To be posted here.
a) Explain Faraday's laws of electromagnetic induction.
b) Explain the role of resistance, capacitance and inductance in an electric circuit.
Answer (a): To be posted here.
Answer (b): To be posted here.
a) Explain the working principle of a single-phase transformer.
b) In a 25 kVA, 2000/200 power transformer the iron and copper losses are 350W and 400W respectively. Calculate the efficiency at full load.
Answer (a): To be posted here.
Answer (b): To be posted here.
a) Explain with schematic diagram different parts of D.C. machines.
b) Explain the principle of three phase induction motor.
Answer (a): To be posted here.
Answer (b): To be posted here.
a) Draw and explain the V-I characteristic of diode.
b) Explain the working principle of common base transistor.
Answer (a): To be posted here.
Answer (b): To be posted here.
Write short notes on any two.
i) Logic gates
ii) R-S flip flop
iii) Compare electric and magnetic circuit
iv) B-H curve
Answer: To be posted here.
