MPH-06
June - Examination 2017
M.Sc. Physics (Final) Examination Applied Electronics
Paper - MPH-06
Time : 3 Hours ] [ Max. Marks :- 80
Note: The question paper is divided into three sections A, B and C. Write answers as per the given instructions. Check your paper code and paper title before starting the paper. Incase of discrepancy English version will be final.
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Section - A 8 × 2 = 16 (Very Short Answer Questions) (Compulsory)
Note: Answer all questions. As per the nature of the question delimit answer in one word, one sentence or maximum up to 30 words. Each question carries 2 marks.
IÊS> - "A' (A{V bKw CÎmar¶ àíZ)
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854
MPH-06 / 700 / 4 (1) (P.T.O.)
854
MPH-06 / 700 / 4 (2) (Contd.)
1) (i) Define forward bias for p-n junction.
AJ« ~m`{gV p-n g§{Y H$mo n[a^m{fV H$[aE&
(ii) What is use of clamping circuit?
ŠboqnJ n[anW H$m Cn`moJ Š`m h¡?
(iii) Draw of symbol of P channel JFET.
P M¡Zb JFET H$m àVrH$ {MÝh ~ZmBE&
(iv) How many ways are there to provide feedback? Write the names.
nwZ{Z©doe g§Ho$V g§`moOZ {H$VZr {d{Y`m| go {H$`m Om gH$Vm h¡?
CZHo$ Zm_ {bImo&
(v) Write binary equivalent of decimal number (0.25)10.
Xe_bd g§»`m (0.25)10 H$s {ÛAmYmar Vwë` g§»`m {b{IE&
(vi) What is K-map?
K-_on Š`m h¡?
(vii) What is application of comberator circuit?
Vwb{ZÌ n[anW H$m à`moJ {H$g{bE hmoVm h¡?
(viii) How many output voltages are there for a 10-bit D/A converter?
10-{~Q> D/A H$ZdQ>©a H$s {H$VZr {ZJ©V dmoëQ>Vm hmoJr?
Section - B 4 × 8 = 32 (Short Answer Questions)
Note: Answer any four questions. Each answer should not exceed 200 words. Each question carries 8 marks.
MPH-06 / 700 / 4 (3) (P.T.O.) 854
(IÊS> - ~) (bKw CÎmar¶ àíZ)
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200 eãXm| ‘| n[agr{‘V H$s{OE& à˶oH$ àíZ 8 A§H$m| H$m h¡&
2) Explain the principle of solar cell.
gmoba gob H$m {gÕm§V g_PmBE&
3) Explain the need of biasing in transistor amplifier and describe Q-point.
Q´>m°{OñQ>a àdY©H$ n[anW _| ~m`qgJ H$mo g_PmBE VWm Q-{~ÝXþ H$s ì`m»`m H$s{OE&
4) Define and classify power amplifiers.
e{º$ àdY©H$ H$s n[a^mfm d dJuH$aU Xr{OE&
5) Explain principle of oscillators.
Xmo{bÌ Ho$ {gÕm§V H$mo g_PmBE&
6) Use K-map to simplify the expression Y = ABC + ABC + A B C + A B C + A B C K-_on H$m à`moJ H$a gabrH¥$V H$a|&
Y = ABC + ABC + A B C + A B C + A B C 7) Explain decoder circuit principle.
S>rH$moS>a ({dg§Ho$VH$) n[anW H$m {gÕm§V g_PmBE&
8) Explain shift register with circuit diagram.
{eâQ> a{OñQ>a H$mo n[anW {MÌ Ûmam g_PmBE&
9) Describe astable multivibrator.
ñdM{bV (astable) ~hþH§${nÌ H$s ì`m»`m H$s{OE&
854
MPH-06 / 700 / 4 (4)
Section - C 2 × 16 = 32 (Long Answer Questions)
Note: Answer any two questions. Each answer should not exceed 500 words. Each question carries 16 marks.
(IÊS> - g) (XrK© CÎmar¶ àíZ)
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10) Explain Integrator and Differentiator operational amplifier.
g_mH$bZ d AdH$bH$ g§{H«$`mË_H$ àdY©H$ H$mo g_PmBE&
11) Explain.
a) Tunnedl diode b) Light emitting diode
g_PmBE&
a) Q>Zb S>m`moS>
b) àH$me CËgO©H$ S>m`moS>
12) Explain operation and characteristics curves of E-MOSFET.
E-MOSFET H$s H$m`©{d{Y Ed§ A{^bmj{UH$ dH«$m| H$mo g_PmBE&
13) Explain working of ripple counter.
[anb H$mCÝQ>a H$s H$m`©{d{Y H$mo g_PmBE&
