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Tags: EXAMINATION, SEMESTER, ENGINEERING, DIPLOMA, UNIVERSITY, TECHNOLOGICAL, GUJARAT, GUJARAT TECHNOLOGICAL UNIVERSITY DIPLOMA ENGINEERING SEMESTER II EXAMINATION,
 
 
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GUJARAT TECHNOLOGICAL UNIVERSITY DIPLOMA ENGINEERING – SEMESTER – II • EXAMINATION –
Post: #1

GUJARAT TECHNOLOGICAL UNIVERSITY
DIPLOMA ENGINEERING – SEMESTER – II • EXAMINATION – SUMMER-2015



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Attempt all questions.
Make Suitable assumptions wherever necessary.
Figures to the right indicate full marks.
Use of programmable & Communication aids are strictly prohibited.
Use of only simple calculator is permitted.
English version is authentic.


Answer any seven out of ten.
Give the SI units of following physical quantity : (1) Force (2) Electric current
State types of error.
State Kirchoff’s first law.
Differentiate between Longitudinal waves and transverse waves.(two points)
State laws of refraction. ( any four)
State Ohm’s law and give its formula.
What is meant by electric potential? State its unit.
Define magnetic flux.
Give four examples of paramagnetic substances.


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10. State terminals of a transistor.


Q.2

(a) State the fundamental physical quantities in S.I. system of with their units and
symbols.

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OR





(a) Explain construction and working of Vernier caliper with neat and clean labeled
diagram.
(b) What is meant by electrolysis ? State and explain its applications.


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OR








(b) Derive expression for equivalent resistance for resistors connected in series
and parallel connections (with diagram).

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©


©

Find out least count of a micrometer screw, which has 100 divisions on its
circular scale and 1 mm pitch.
OR
Main scale of a vernier caliper is calibrated in millimeters. If 19 divisions of its

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main scale are equal to 20 divisions of its vernier scale, find out its least count.


1/5








(d)




State characteristics of electric field lines.




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OR

(d)

State Coulomb’s law. Give its formula and explain each term.

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Q.3

(a) Define Resistivity and conductivity. State their units.

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OR



(a) State Joule’s law. Give its formula. State four applications of Joule’s effect.

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(b) Define magnetic field. Give its unit. State any four characteristics of magnetic
field lines.

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OR



(b) Write a short note on Ferromagnetic materials.

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©

A resistance of 30 Ω is connected in A.C. circuit. If maximum A.C. voltage in the

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circuit is 220 V, find power consumed in the circuit.





OR



©

A bulb of 40 W is at a potential difference of 220 V. Find out current flowing

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through it.




(d)


Define self inductance and mutual induction. State their units. State Lenz’s law.
OR

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Q.4








(d) Define magnetic permeability and magnetic susceptibility. State their units.
(a) Find out wave length of a wave having frequency 440 Hz and velocity of 340
m/s.
OR
(a) Velocity of light in water is 2.25 x 108 m/sec. Find out refractive index of water.
( Velocity of light in air is 3 x 105 km/sec)
(b) Differentiate between N‐type and P‐type semiconductors. ( four points )

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OR



(b) Explain forward bias characteristics of P‐N junction diode with necessary
circuit diagram.

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©

Write a short note on applications of nanotechnology.

07

Q.5




(a) State applications of LASER.


(b) Explain Dispersion of light.

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©




Define conductors, insulators and semiconductors with reference to Band
Theory.



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(d) Explain structure of optical fiber.



*









2/5

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ગજરાતી


પ્ર . ૧





















૧.
૨.
૩.
૪.
૫.
૬.
૭.
૮.
૯.


દશમાથી કોઇપણ સાતના જવાબ આપો.
નીચેની ભૌિતક રાશીના એકમો જણાવો.(1) બળ (2) િવ તપ્રવાહ
િુ ટના પ્રકાર જણાવો.
િકરચોફનો પહલો િનયમ જણાવો.
સગત તરંગો અને લબગત તરંગો વ ચેનો ભેદ પ ટ કરો. ( બે મ ુ ા)
વક્રીભવનના િનયમો જણાવો. ( કોઈ પણ ચાર )
ઓહમનો િનયમ જણાવો અને તેન સત્ર આપો.
િવ ત િ થિતમાન એટલે શ ? તેનો એકમ જણાવો.
ચબકીય લક્ષ એટલે શ ?
ચાર પેરામેગ્નેિટક પદાથ ના નામ જણાવો.


14



૧૦ ટ્રાિં જ ટરના ટિમર્નલના નામ જણાવો.


પ્ર . ર











S. I. પ ધિતની મળભત ભૌિતક રાિશઓ, તેમના એકમો તથા સજ્ઞા જણાવો.
અથવા
વિનર્યર કેિલપરની રચના તથા કાયર્ પ ટ નામિનદશનવાળી આકૃિત સાથે


૦4



૦4

વણર્વો.












ઇલેક્ટ્રોલાઈસીસ એટલે શ?ું તેની ઉપયોગીતા જણાવો અને વણર્વો.
અથવા
અવરોધોના ેણી અને સમાતર જોડાણ માટે (આકૃિત સાથે) સમત ુ ય

૦4



૦4

અવરોધના સત્ર તારવો.





1 મીમી પીચ અંતર અને વતળાકાર કેલ પર 100 કાપા ધરાવતા

૦3

માઈક્રોમીટર ની લઘ ુ મ માપ શિક્તન સત્ર તારવો.





અથવા





એક વિનર્યર કેિલપરનો મખ્ય કેલ િમિલિમટરમા અંિકત કરેલ છે. જો તના

૦3

વિનર્યર કેલના 19 કાપાન ું મ ૂ ય મખ્ુ ય કેલના 20 કાપા ટલ ું થત ું હોય તો
વિનર્યર કેિલપરની લઘ ુ મ માપશિક્ત શોધો.







િવજક્ષેત્રરેખાઓની લાક્ષિણકતાઓ જણાવો.
અથવા
કુલબનો િનયમ જણાવો. તેન સત્ર લખી દરેક પદ સમજાવો.
 


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