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

Posted by Akshay Singh 7 years, 6 months ago

1 answers

Surbhi Raghu 7 years, 6 months ago

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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ANSWER

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

Posted by Ajmal J 7 years, 6 months ago

CBSE > Class 12 > Physics

1 answers

Jass Mangla 7 years, 6 months 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

2Thank You

ANSWER

How to pass in physics

Posted by Bhanu Dixit 7 years, 6 months ago

CBSE > Class 12 > Physics

1 answers

Esha Patel 7 years, 6 months ago

By writing in exams..

2Thank You

ANSWER

Transistor as an oscillator

Posted by Jagmeet Singh 7 years, 6 months ago

CBSE > Class 12 > Physics

1 answers

Sunaina Malik 7 years, 6 months ago

Not in syllabus

1Thank You

ANSWER

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

Posted by Arunabha Mondal 7 years, 6 months ago

CBSE > Class 12 > Physics

4 answers

Mmmmmmmmmmmmmmmmmmmm Wwwwwwwwwwwwwwwwwwww 7 years, 6 months ago

You can only suggest rectification in cbse site not ur experience

1Thank You

Jass Mangla 7 years, 6 months 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....

0Thank You

Jass Mangla 7 years, 6 months ago

Boad Da paper level k according Hoti hai checking ka level

2Thank You

Ishu Chouhan 7 years, 6 months ago

Bhot difference h

1Thank You

ANSWER

Guys solenoid and toroid detail me pdne h ya sirf ideas

Posted by Nirmal Soni 7 years, 6 months ago

CBSE > Class 12 > Physics

5 answers

Ishu Chouhan 7 years, 6 months ago

Must study

1Thank You

Ishu Chouhan 7 years, 6 months ago

State amphere circuital law and derive expression for solenoid

0Thank You

Ishu Chouhan 7 years, 6 months ago

Because question aa Sakta h

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Jass Mangla 7 years, 6 months ago

Ache se

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Ishu Chouhan 7 years, 6 months ago

Detail me

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ANSWER

Obtain the equivalence capacitance

Posted by Sanjeev Yadav 7 years, 6 months ago

CBSE > Class 12 > Physics

0 answers

ANSWER

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

Posted by Shantanu Upadhyay 7 years, 6 months ago

CBSE > Class 12 > Physics

1 answers

Jass Mangla 7 years, 6 months ago

0Thank You

ANSWER

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

Posted by Shivi Rajput 7 years, 6 months ago

CBSE > Class 12 > Physics

10 answers

Shivi Rajput 7 years, 6 months ago

Thank u

0Thank You

Harshit Tiwari H 7 years, 6 months ago

Transistor occilator not in syllabus

0Thank You

Akash Agarwal 7 years, 6 months ago

Ni b

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Harshit Tiwari H 7 years, 6 months ago

That's not donor it's dono spelling mistake

0Thank You

Shivi Rajput 7 years, 6 months ago

Jaldi bolo Harshit

0Thank You

Shivi Rajput 7 years, 6 months ago

Hey Kaun sa donor ?????

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Anchit Gupta 7 years, 6 months ago

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

0Thank You

Harshit Tiwari H 7 years, 6 months ago

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

1Thank You

Shivi Rajput 7 years, 6 months ago

It's urgent

0Thank You

Shivi Rajput 7 years, 6 months ago

Plzzzzzzz reply

0Thank You

ANSWER

What is dynamic mass of photon?

Posted by Ramji Rastogi 7 years, 6 months ago

CBSE > Class 12 > Physics

0 answers

ANSWER

Explain collision in two dimension.

Posted by Abhiraj Kumar 7 years, 6 months ago

CBSE > Class 12 > Physics

0 answers

ANSWER

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 7 years, 6 months ago

CBSE > Class 12 > Physics

1 answers

Akash Agarwal 7 years, 6 months ago

Sharing of charges between t 2 capacitorz

0Thank You

ANSWER

What is common potential? Plz tell me

Posted by Annu Parween 7 years, 6 months ago

CBSE > Class 12 > Physics

0 answers

ANSWER

How electricity bill reduces on earthing?

Posted by Abhishek Tripathi 7 years, 6 months ago

CBSE > Class 12 > Physics

2 answers

Garima Suyal 7 years, 6 months ago

Kata lagao.

1Thank You

Anchit Gupta 7 years, 6 months 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 7 years, 6 months ago

CBSE > Class 12 > Physics

1 answers

Akash Agarwal 7 years, 6 months ago

???

0Thank You

ANSWER

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

Posted by Shivi Rajput 7 years, 6 months ago

CBSE > Class 12 > Physics

6 answers

Shivi Rajput 7 years, 6 months ago

Thnx Ritu

0Thank You

Ritu Gupta 7 years, 6 months 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.

0Thank You

Sai Thaini 7 years, 6 months ago

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

2Thank You

Shivi Rajput 7 years, 6 months ago

Plzzzzzzz reply

1Thank You

Shivi Rajput 7 years, 6 months ago

It's urgent

2Thank You

Shivi Rajput 7 years, 6 months ago

Please someone reply

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ANSWER

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 7 years, 6 months ago

CBSE > Class 12 > Physics

1 answers

Ritu Gupta 7 years, 6 months 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

ANSWER

What is Fresnel's distance?

Posted by Animesh Roy 7 years, 6 months ago

CBSE > Class 12 > Physics

3 answers

Mayank Sharma 7 years, 6 months 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 7 years, 6 months ago

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

1Thank You

Mayank Sharma 7 years, 6 months ago

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

1Thank You

ANSWER

Do we have malus law in course?

Posted by Divyansh Gupta 7 years, 6 months ago

CBSE > Class 12 > Physics

1 answers

Rochie Joshi 7 years, 6 months ago

Haan

1Thank You

ANSWER

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 7 years, 6 months ago

CBSE > Class 12 > Physics

0 answers

ANSWER

Define Working principle of potentiometer???

Posted by Buddha Singh Rai 7 years, 6 months ago

CBSE > Class 12 > Physics

2 answers

Your Principal 7 years, 6 months 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.

0Thank You

Mayank Sharma 7 years, 6 months 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

ANSWER

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

Posted by Vishal Sharma 7 years, 6 months ago

CBSE > Class 12 > Physics

1 answers

Jin Kazama 7 years, 6 months ago

Mtlb ???

0Thank You

ANSWER

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

Posted by Bakhshish Laddy 7 years, 6 months ago

CBSE > Class 12 > Physics

2 answers

Radhika Tyagi 7 years, 6 months ago

Law or long solenoid k liye uski application

0Thank You

Sai Thaini 7 years, 6 months ago

0Thank You

ANSWER

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

Posted by Anadya Jaiswal 7 years, 6 months ago

CBSE > Class 12 > Physics

1 answers

Sourav Sharma 7 years, 6 months 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

ANSWER

Can i get some questions

Posted by Mr Logan 7 years, 6 months ago

CBSE > Class 12 > Physics

2 answers

Jin Kazama 7 years, 6 months ago

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

0Thank You

Jin Kazama 7 years, 6 months ago

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

1Thank You

ANSWER

What should I do to fail in physics..

Posted by Buddha Singh Rai 7 years, 6 months ago

CBSE > Class 12 > Physics

5 answers

Ishu Chouhan 7 years, 6 months ago

Fail hona chahte ho

0Thank You

Ishu Chouhan 7 years, 6 months ago

?????

0Thank You

Buddha Singh Rai 7 years, 6 months ago

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

0Thank You

Sourav Sharma 7 years, 6 months ago

Sutooo

0Thank You

Jin Kazama 7 years, 6 months ago

Nothing?????

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ANSWER

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

Posted by Buddha Singh Rai 7 years, 6 months ago

CBSE > Class 12 > Physics

3 answers

Sourav Sharma 7 years, 6 months ago

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

0Thank You

Bakhshish Laddy 7 years, 6 months ago

the sensitivity increases in Number of turns but in limit

1Thank You

Bakhshish Laddy 7 years, 6 months ago

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

1Thank You

ANSWER

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 7 years, 6 months ago

CBSE > Class 12 > Physics

4 answers

Ritu Gupta 7 years, 6 months 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 7 years, 6 months ago

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

1Thank You

Akash Agarwal 7 years, 6 months ago

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

1Thank You

Jin Kazama 7 years, 6 months 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