Electronics-1 May 2016 3rd Sem Electrical Engineering Diploma Paper

Download Previous Year Diploma Solved Question Paper of Electronics-1 May 2016 3RD Sem Electrical Engineering Diploma Paper

Electronics-1 May 2016 3RD Sem Electrical Engineering Diploma Paper

SECTION-A

Q1. Fill in the blanks. 10×1.5=15

a. To obtain p-type semiconductor _________ impurity is added to a pure semiconductor.
b. A capacitor circuit does not allow to pass _ component.
c. A Zener diode is always operated in the _ region.
d. In a transistor, there are two pn junctions.(T/F)
e. The point where dc load line intersects the given base current curve is called _
f. In an amplifier, power gain=current gain * _ gain.
g. A FET is a bipolar transistor. (T/F)
h. A multi stage amplifier contains more than one amplifier. (T/F)
i. The emitter of a transistor is doped
(i) heavily (ii)lightly
(iii) moderately (iv)none of these
j. LED stands for _____________ .

SECTION-B

Q2. Attempt any SIX questions. 6×5=30

a. What is doping? Explain with suitable diagram intrinsic and extrinisic semiconductor.
b. Explain half wave rectifier with the help of diagram.
c. Write short note on: Varactor diode.
d. Give brief history of development of electronics.
e. Differentiate between ac load line and dc load line.
f. Discuss JFET as amplifier in brief.
g. Explain the following terms:
(i) multistage amplifier (ii)power gain (iii) frequency response (iv) decibel gain (v) bandwidth

SECTION-C

Q3. Attempt any three questions. 3×10=30

a. What is zener diode? With the help of diagram explain its characteristics. Also write down its various applications.
b. Explain transformer coupled amplifier and its frequency response with the help of diagram.
c. Explain in detail construction, operation and applications of MOSFET.
d. Write short note on any two:
(i) Ripple factor
(ii) Drift current and Diffusion current
(iii) Avalanche break down

Electronics-1 May 2019 3RD Sem Electrical Engineering Solved PSBTE Diploma Paper

SECTION-A

Q1. Fill in the blanks. 10×1.5=15

a. The electronics components which can process the signal are called Active components.
b. The voltage source with Zero Internal resistance is called ideal voltage source.
c. Valence electrons are present in Outermost orbit of an atom.
d. With the addition of trivalent impurity to a semiconductor P- type semiconductor is obtained.
e. A capacitor does not allow passing dc Component.
f. In the saturation region of a transistor, both the junctions are Forward Biased .
g. For the transistor to work as an amplifier, its operation point should be in Active Region.
h. The RC Coupling is used for audio signal amplification in multi stage amplifiers.
i. A field effect transistor is a Three Terminal semiconductor device
j. Zener diode is made to operate in Breakdown region.

Electronics-1 May 2019 3RD Sem Electrical Engineer ing Diploma Paper

Section a Electronics-1 May 2016 3RD Sem Electrical Engineering Diploma Paper

The electronics components which can process the signal are called ________ components.

a. To obtain p-type semiconductor _____________ impurity is added to a pure semiconductor.
b. A capacitor circuit does not allow to pass _______ component.
c. A Zener diode is always operated in the ___________ region.
d. In a transistor, there are two pn junctions.(T/F)
e. The point where dc load line intersects the given base current curve is called _____________
f. In an amplifier, power gain=current gain * _______ gain.
g. A FET is a bipolar transistor. (T/F)
h. A multi stage amplifier contains more than one amplifier. (T/F)
i. The emitter of a transistor is doped
(i) heavily (ii)lightly
(iii) moderately (iv)none of these
j. LED stands for _______________ .