**VIVA **

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**SEM-1**

VIVA is important and plays key part in practicals marks,which in turn is good for a better result.

Be good with the theory portion of all the practicals

Try to cover the syllabus as much as possible,some externals could ask from theory part of the subject ,while others just focus on your practical performed.It would be in your own benefit if you perform all the practicals. If you are not sure of the viva or are not able to answer.Make sure you have prepared 1 topic very well from the syllabus,so that external could ask questions on that.But be sure of that topic.

**APPLIED PHYSICS LAB-1**1.What is interference and how is it different from diffraction?Any real life applications for both.What is wavelength of sodium light? What is the unit of wavelength?which colour is it.These questions are common to first 3 experiments

2.What are Newton’s rings?How are they formed?Write a formula for it.Some examiners ask for its diagram to be drawn .Name all the apparatus.How did you find wavelength of sodium light using Newton’s rings

3.Name the apparatus used to determine the wavelength of sodium light by Fresnel's biprism.How is biprism used to find the wavelength?Make its diagram.Write the formula.

4.formula associated to determine the wavelength of sodium light using diffraction grating,What is diffraction grating?What is the distance between the slits?write the formula used.How is it different from Fresnel biprism?Application of diffraction grating.

5.What is refractive index ? what is dispersive power?What are their units? What is the refractive index of prism? What is the dispersive power of prism? what is spectrometer? formula used in the experiment?

6.What is specific roatation?What is half-shade polarimeter?What is the specific rotation of cane sugar?what is the unit of specific rotation?What is the formula used?

7. how did you find the wavelength of He-Ne laser using transmission diffraction grating? what is transmission diffraction grating?What is LASER?What is He-Ne laser ,what is its wavelength?What are the types of emissions? What is population inversion?Make a diagram decribing the process

8. formula used to determine the numeral aperture (NA) of an optical fibre.What is numerical aperture?what is optical fibre?what are its advantages and its applications?What is numerical aperture?

**ELECTRICAL TECHNOLOGY LAB**1.What is difference between AC and DC?Why are they called so?

2.What is Thevenin’s /Norton’s Theorem/Superposition/Reciprocity Theorem/Maximum Power Transfer Theorem.maybe gives a circuit and ask to solve a question based on these theorems.

3.What are the types of powers in AC ,their formulas?What is impedance/admittance?What is power factor?what is practically used power factor at home?what is resonance?terms associated with it,difference in a series RLC and parallel RLC circuit in resonance.What is the use of resonance?any practical life example?

4.What is a transformer?Make its diagram.what is transformer ratio?what are formulas used and make phasor diagram for open circuit and short circuit test on 1-phase transformer?

5.What are electrical machines?What is slip?what is dc shunt motor?make its diagram and its applications. what is 3-phase induction motor?make its diagram and its applications what is speed control of DC shunt motor and 3 phase induction motor?Make its graph.

**WORKSHOP PRACTICE**In workshop you sould know the types of jobs,instruments used ,why are they used.All the instruments,their uses and their types.And all the basic terminologies used in manufacturing process.

In sheet metal,the instruments names used are asked, alongwith their uses and anything about the instrument

Instruments used in fitting shop,types of jobs performed.

In carpentry and welding ,types of joints ,apparatus needed ,why they were specifically needed?how to make these joints?

Names of operations on lathe machine.

**ENGINEERING GRAPHICS**As the external asked only to make the figures ,just be good at your practicals and it will ensure a good viva .But do look into the basic terms used in ND Bhatt.And don’t get confused with terms and figures.

**FUNDAMENTAL OF COMPUTING LAB**Learn the hardware details of computer ,as much as you could,while dismantling a pc.It would be beneficial if you know the functions as well.

Learn DOS commands,use them for better grasp.

Install Libre Office and work on some documents in it.Try to cover whatever possible.

PREPARE theory very well .

**APPLIED CHEMISTRY LAB**1.What is titration?How is it performed?Formula used?Chemical formula of the compounds used.what is iodometric titration?what is Complexometric titration ?Name all the apparatus.Which solution is taken in burette and why?Which indicator is used and why?colour conversion for various indicators?

2.What is surface tension?Name the apparatus .formula used?What is the name of the method used?Explain the working of the method.any application ?

3. What is viscosity?Name the apparatus .formula used?mention its applications ?

it took me a lot of time to write this ,so a token of thanks would be appreciated.If you have any questions regarding viva,please ask here only.Seniors with some experience,please share it here to guide others.