BPUT previous year question paper Of BASIC ELECTRONICS, 1st Semester

BPUT previous year question paper
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BPUT previous year question paper

Registration No. :

Total number of printed pages—4 B. Tech

. BE21O1

First Semester Examination — 2011

BASIC ELECTRONICS

Full Marks—70

Time: 3 Hours

Answer Question No. 1 which is compulsory and any five from the rest.

The figures ¡n the right-hand margin indicate marks.

Answer the following questions: 2x10

(a) The gain of a certain amplifier is 30 dB. Express it numerically.

(b) What is the cause and effect of the depletion layer in a p-n junction diode?

(C) Give an implementation of a logic inverter. Why is it called so?

(d) Draw the spectrum of a periodic square wave with proper labels. How many components you need to show in this plot?

(e) Write down four applications of a diode.

(f) Compare the PIVs of a half wave rectifier and a full wave rectifier.

(g) Explain why a capacitor and an inductor can act as filtering components.

(h) Why do you need a sweep signal in a CRO? Draw the waveform if a periodic sine wave is applied to a GRO and the sweep signal is not working in that CRO.

(î) Implement a two-input NAND gate by diodes and resistors.

(j) Realize a NOR gate from NAND gates.

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