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What is ripple factor and the role of pi filter in a rectifier ?

Posted by Akshay Singh 8 years ago

1 answers

Ripple factor is the presence of AC (pulsating) nature in the output of rectifier which decreases the efficiency of device. It is maxm in half wave rectifier and minimum in full wave rectifier.

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Which all topics are Important in semiconductors?....

Posted by Ajmal J 8 years ago

CBSE > Class 12 > Physics

1 answers

Jass Mangla 8 years ago

Npn and pnp full wave , half wave rectifier ,transistors,on Emmitt or common amplifier ki diagrams ....diagrams or graphs toh sab topics ki hi kr Lena is chapter main

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ANSWER

How to pass in physics

Posted by Bhanu Dixit 8 years ago

CBSE > Class 12 > Physics

1 answers

Esha Patel 8 years ago

By writing in exams..

2Thank You

ANSWER

Transistor as an oscillator

Posted by Jagmeet Singh 8 years ago

CBSE > Class 12 > Physics

1 answers

Sunaina Malik 8 years ago

Not in syllabus

1Thank You

ANSWER

School marks aur boards marks me kinta difference hota hai??

Posted by Arunabha Mondal 8 years ago

CBSE > Class 12 > Physics

4 answers

Mmmmmmmmmmmmmmmmmmmm Wwwwwwwwwwwwwwwwwwww 8 years ago

You can only suggest rectification in cbse site not ur experience

1Thank You

Jass Mangla 8 years ago

Hmare liye CBSE ne kha bhi hai k paper k Baad Hun unhe apna experience bta skte hai k hme paper kaise lga .... For this site check kro gd needs for CBSE students....

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Jass Mangla 8 years ago

Boad Da paper level k according Hoti hai checking ka level

2Thank You

Ishu Chouhan 8 years ago

Bhot difference h

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ANSWER

Guys solenoid and toroid detail me pdne h ya sirf ideas

Posted by Nirmal Soni 8 years ago

CBSE > Class 12 > Physics

5 answers

Ishu Chouhan 8 years ago

Must study

1Thank You

Ishu Chouhan 8 years ago

State amphere circuital law and derive expression for solenoid

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Ishu Chouhan 8 years ago

Because question aa Sakta h

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Jass Mangla 8 years ago

Ache se

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Ishu Chouhan 8 years ago

Detail me

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Obtain the equivalence capacitance

Posted by Sanjeev Yadav 8 years ago

CBSE > Class 12 > Physics

0 answers

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Is moderator and types of nuclear reactions under the course of CBSE ?

Posted by Shantanu Upadhyay 8 years ago

CBSE > Class 12 > Physics

1 answers

Jass Mangla 8 years ago

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ANSWER

Feedback amplifier and transistor oscillator important h kya ????????

Posted by Shivi Rajput 8 years ago

CBSE > Class 12 > Physics

10 answers

Shivi Rajput 8 years ago

Thank u

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Harshit Tiwari H 8 years ago

Transistor occilator not in syllabus

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Akash Agarwal 8 years ago

Ni b

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Harshit Tiwari H 8 years ago

That's not donor it's dono spelling mistake

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Shivi Rajput 8 years ago

Jaldi bolo Harshit

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Shivi Rajput 8 years ago

Hey Kaun sa donor ?????

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Anchit Gupta 8 years ago

Common emitter transistor as an amplifier is very important. 2nd one is not in course

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Harshit Tiwari H 8 years ago

Tumhe kuch jyada hi urgent hai ? achcha suno donor important hain

1Thank You

Shivi Rajput 8 years ago

It's urgent

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Shivi Rajput 8 years ago

Plzzzzzzz reply

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ANSWER

What is dynamic mass of photon?

Posted by Ramji Rastogi 8 years ago

CBSE > Class 12 > Physics

0 answers

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Explain collision in two dimension.

Posted by Abhiraj Kumar 8 years ago

CBSE > Class 12 > Physics

0 answers

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Show that whenever two conductors share charges by bringing them into electrical contact ,there is loss of energy.plz tell me...

Posted by Annu Parween 8 years ago

CBSE > Class 12 > Physics

1 answers

Akash Agarwal 8 years ago

Sharing of charges between t 2 capacitorz

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What is common potential? Plz tell me

Posted by Annu Parween 8 years ago

CBSE > Class 12 > Physics

0 answers

ANSWER

How electricity bill reduces on earthing?

Posted by Abhishek Tripathi 8 years ago

CBSE > Class 12 > Physics

2 answers

Garima Suyal 8 years ago

Kata lagao.

1Thank You

Anchit Gupta 8 years ago

Because in absence of earthing person can get bill for extra charges NOTconsumed by the devices in his/her premises.

1Thank You

ANSWER

Graph of thin charged sheet

Posted by Tanya Goyal 8 years ago

CBSE > Class 12 > Physics

1 answers

Akash Agarwal 8 years ago

???

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How does resistivity of semiconductor vary with temperature.give reason ?????

Posted by Shivi Rajput 8 years ago

CBSE > Class 12 > Physics

6 answers

Shivi Rajput 8 years ago

Thnx Ritu

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Ritu Gupta 8 years ago

Resistivity decreases with increase in temperature because (n) charge density increases and relaxation time also increases. But the increase in (n) is more compensated then increase in relaxation time.

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Sai Thaini 8 years ago

ρt2 = ρt1 [ 1 + α1 (t2 - t1)] Resistivity increases with increase in temperature.

2Thank You

Shivi Rajput 8 years ago

Plzzzzzzz reply

1Thank You

Shivi Rajput 8 years ago

It's urgent

2Thank You

Shivi Rajput 8 years ago

Please someone reply

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How is that the reverse current in a zenir diode starts increasing suddenly at a relatively low breakdowns voltage of 5V or so ?

Posted by Prajjwal Srivastava 8 years ago

CBSE > Class 12 > Physics

1 answers

Ritu Gupta 8 years ago

Because at zener voltage electric field of depletion region has much strength to pull out the valence elctrons from bound atoms which increases the current largely

1Thank You

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What is Fresnel's distance?

Posted by Animesh Roy 8 years ago

CBSE > Class 12 > Physics

3 answers

Mayank Sharma 8 years ago

Sorry it is wrong..by mistake i typed..actual is it is the mininmum distance which a light beam can travel before its deviation from orivinal path light by diffraction bevomes signifiacnt

2Thank You

Akash Agarwal 8 years ago

F.D = a^2/lambda a= slit width

1Thank You

Mayank Sharma 8 years ago

When screen and source of light both are at finite distance from the obstacle

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Do we have malus law in course?

Posted by Divyansh Gupta 8 years ago

CBSE > Class 12 > Physics

1 answers

Rochie Joshi 8 years ago

Haan

1Thank You

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Define relative permeability and susceptibility of a magnetic material. Write the relation between these two quantities. What information does the value of susceptibility provide regarding the nature of the magnetic material?

Posted by Akash Sidhu 8 years ago

CBSE > Class 12 > Physics

0 answers

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Define Working principle of potentiometer???

Posted by Buddha Singh Rai 8 years ago

CBSE > Class 12 > Physics

2 answers

Your Principal 8 years ago

Working of potentiometer is based on the fact that the fall of potential across any portion of the wire is directly praporsnal to the length of that portion provided the wire is of uniform area of cross-section and a constant current is flowing through it.

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Mayank Sharma 8 years ago

Potentiometer works on the principal that fall ogf potential across any portion of thr wire is directly proportional to the length of that portion

2Thank You

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How many types of paper will come in 2018 of 12 class

Posted by Vishal Sharma 8 years ago

CBSE > Class 12 > Physics

1 answers

Jin Kazama 8 years ago

Mtlb ???

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which type of oues comes from applactoin of ampere-circuit law

Posted by Bakhshish Laddy 8 years ago

CBSE > Class 12 > Physics

2 answers

Radhika Tyagi 8 years ago

Law or long solenoid k liye uski application

0Thank You

Sai Thaini 8 years ago

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What are the most important topics to be read from every chapter?

Posted by Anadya Jaiswal 8 years ago

CBSE > Class 12 > Physics

1 answers

Sourav Sharma 8 years ago

Galvanometers , potentiometer, meter bridge,telescope.microscope.transformer,mutual inductance, self inductance, motional emf,alpha beta gama decay ,range of tower,flow chart of emw waves

2Thank You

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Can i get some questions

Posted by Mr Logan 8 years ago

CBSE > Class 12 > Physics

2 answers

Jin Kazama 8 years ago

Sorry bro wolverine off Logan meri sahet k liye hanikark hai ???

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Jin Kazama 8 years ago

Logan---->wolverine , it is treacherous ???

1Thank You

ANSWER

What should I do to fail in physics..

Posted by Buddha Singh Rai 8 years ago

CBSE > Class 12 > Physics

5 answers

Ishu Chouhan 8 years ago

Fail hona chahte ho

0Thank You

Ishu Chouhan 8 years ago

?????

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Buddha Singh Rai 8 years ago

Kai say suuutu nind nahi aaa raaha hai exam ki pressure ki karam say....

0Thank You

Sourav Sharma 8 years ago

Sutooo

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Jin Kazama 8 years ago

Nothing?????

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Define current sensitivity of a galvanometer. How is current sensitivity increased???

Posted by Buddha Singh Rai 8 years ago

CBSE > Class 12 > Physics

3 answers

Sourav Sharma 8 years ago

It is defined as the deflection per unit current it can be increased by increasing turns , magnetic field

0Thank You

Bakhshish Laddy 8 years ago

the sensitivity increases in Number of turns but in limit

1Thank You

Bakhshish Laddy 8 years ago

as total twist per unit current in coil (Is)= q/I = 1/G= nAB/ k

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A biconvex lens made of transparent material of refractive index 1.25 is immersed in water of refractive index 1.33. Will the lens behave as a converging lens? Ans. h ki lens will behave as diverging lens. yeh ans kese ayga?

Posted by K Kush 8 years ago

CBSE > Class 12 > Physics

4 answers

Ritu Gupta 8 years ago

When a lens is placed in a liquid of less refractive index then the refractive index of material of lens, the nature of lens changes. That is, a converging lens behaves as a diverging lens or vice versa. Or you can say sign of focal length changes. Hope this will help you!!!

2Thank You

Akash Agarwal 8 years ago

If not satisfied i have another way bt the mentioned one is the best.

1Thank You

Akash Agarwal 8 years ago

Lena makers formula kro...n get the sign of f.

1Thank You

Jin Kazama 8 years ago

Lens makers formulae m ye value put kerke dekh pata chal jayega , +ve and -ve sign change ???

1Thank You

ANSWER

Physics 2017 Delhi board paper with solutions