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Answered on 24/06/2020 Tuition/BSc Tuition/General Chemistry For Maths & Physics

Anand Choudhary

6+ years of experience in IIT-JEE,SAT,Physics ,NEET,Mathematics,English .

See, if you expand the function x|x|, you will get (square of x) in (0,∞). But (negative of the square of x)- in (-∞ ,0). so now if you plot the graph, the graph will be downward parabola in one part of the x-axis and another upward parabola. So, it is neither odd nor even. read more

See, if you expand the function x|x|, you will get  (square of x)  in (0,∞). But  (negative of the square of x)-  in (-∞ ,0). so now if you plot the graph, the graph will be downward parabola in one part of the x-axis and another upward parabola. So, it is neither odd nor even.

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Lesson Posted on 28/05/2020 CBSE/Class 12/Science/Biology/Unit 2-Genetics and Evolution/Principles of Inheritance and Variation Tuition/BSc Tuition/Molecular Biology CBSE/Class 11/Science/Biology

What is a Polymerase Chain Reaction (PCR)?

Alka Srivastava

I am doing my PhD in Botany from CSIR-National Botanical Research Institute. I have completed my...

It is a revolutionary method developed by Kary Mullis in the 1980s, used to synthesize a new strand of DNA complementary to the offered template strand. Components of PCR: 1. DNA template- the DNA strand that contains the target sequence which has to be multiplied. 2. DNA Polymerase enzyme- a type... read more

It is a revolutionary method developed by Kary Mullis in the 1980s, used to synthesize a new strand of DNA complementary to the offered template strand. 

Components of PCR:

1. DNA template- the DNA strand that contains the target sequence which has to be multiplied.

2. DNA Polymerase enzyme- a type of enzyme that synthesizes new strands of DNA complementary to the target sequence. The first and most commonly used of these enzymes is Taq DNA polymerase (from Thermus aquaticus), whereas PfuDNA polymerase (from Pyrococcus furiosus) is used widely because of its higher fidelity when copying DNA.

3. Primers- a short sequence of nucleotides that provides an initiation point for DNA synthesis.

4. dNTPs(deoxynucleotides triphosphates)- single units of the bases A, T, G, and C, which are essentially "building blocks" for new DNA strands.

Steps in PCR:

1. Denaturation (96°): Heat the reaction strongly to separate, or denature, the DNA strands. This provides a single-stranded template for the next step.

2. Annealing (55°C-65°C): Cool the reaction so the primers can bind to their complementary sequences on the single-stranded template DNA.

3. The extension (72°): Raise the reaction temperatures so Taq polymerase extends the primers, synthesizing new strands of DNA.

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Lesson Posted on 04/05/2020 CBSE/Class 11/Science/Physics CBSE/Class 12 Tuition/BSc Tuition

Electric field

Durga

ELECTRIC FIELD : The space or region around the charge in which its effect can be felt is called electric field. Electric field is denoted by 'E'. In other words, if we have a charge Q placed at the origin and an another charge q is placed at (1,0,0), then we have to... read more

ELECTRIC FIELD :

                                The space or region around the charge in which its effect can be felt is called electric field.

Electric field is denoted by 'E'. In other words, if we have a charge Q placed at the origin and an another charge q is placed at (1,0,0), then we have to check that upto which distance q charge is influenced by Q charge at origin.

Direction of electric field is from positive to negative charge same as force. Electric field is a vector quantity.

Mathematically, electri field is written as:          

                                          

S.I. unit of electric field is N/C.

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Lesson Posted on 22/04/2020 Tuition/BTech Tuition/Engineering Mathematics (M1) Tuition/BSc Tuition/BSc Mathematics

Divergent And Curl of Vector Function

Sridhar Reddy Bijjula

I an Assistant Professor in Mathematics with 12+years of experiance in teaching in mathematics BSc, Bcom...

The following video gives clear and brief introduction about the Divergent and Curl of a vector function.
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Answered on 02/06/2020 Tuition/BSc Tuition

Dr Kumud Sarin

30 years of experience across Research, Teaching, Writing, Management

Prolog means logic programming language related to artificial intelligence and computational symbolic linguistics with an application to define the functional objects leading to simulations and automation. Finite automata should have two arguments one input and other output and return to the states by... read more

Prolog means logic programming language related to artificial intelligence and computational symbolic linguistics with an application to define the functional objects leading to simulations and automation. Finite automata should have two arguments one input and other output and return to the states by which it passed through.

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Lesson Posted on 08/04/2020 Tuition/BTech Tuition/BTech Instrumentation Engineering Tuition/BSc Tuition/Electronic Instrumentation Tuition/BTech Tuition/Measurements and Instrumentation

Flowmeters

Syed Irfan ali

After spending 14 years 11 internationally & 3 yrs domestic experience in Industrial Automation & international...

Flowmeters Flowmeters are devices used to measure the flow of fluid(i.e. liquid, gases or slurries). Chemical/Petrochemical/Oil & Gas Industries basically refine, manage chemical reaction of fluid in order to make something useful products. For e.g. Crude oil/Fossil Fuel which we get naturally... read more

Flowmeters

Flowmeters are devices used to measure the flow of fluid(i.e. liquid, gases or slurries). Chemical/Petrochemical/Oil & Gas Industries basically refine, manage chemical reaction of fluid in order to make something useful products.

For e.g. Crude oil/Fossil Fuel which we get naturally underneath the earth, created by nature in millions of years is not useful naturally, it is refined, heated, chemically reacted to produce useful products like Gasoline(Petrol/Diesel/LNG), Naphtha, Kerosene, Asphalt etc.

Operation to generate useful products from Crude oil is called Process. Process means organizing various activities like, refining, heating, cooling, chemical reaction in a controlled manner to produce useful products out of raw material.

pic credit- Marathon Refinery USA

Above pic shows a typical Oil refinery, where crude oil is converted into gasoline & other useful products.

These refineries & other chemical plants are fully automatic & the process of huge plants like this are controlled automatically with Operator to feed input values & required output values to the Logical controller i.e. Distributed Control Systems (DCS), Programmable Logic Controller (PLC).

These plants are designed to automatically manage the Emergency shutdown in case of any mishaps, saving lives & assets.

Flowmeters: One of variable to control the process is Flow, in order to take proper decision by operator/logic, they must know exact value of the flow inside the pipeline. i.e. in order to avoid overflow/over pressurization of tank/ pipeline, flow inside the pipeline must be known, so that some automatic Valve can be opened to avoid over pressurization & thus to prevent bursting of pipeline or tank.

Various types of Flow meters Transmitters pic credit India Mart

Various flow meters as shown in the pic above are installed inline with pipeline, to measure flow of the fluid. These flow meters have different working principles.

Types of Flow meters : 1. Restriction Orifice, 2. Flow nozzle, 3. Ventury tube, 4. Electro-magnetic flow meter, 5. Ultra Sonic flow meter, 6. Turbine Flow meter, 7. Vortex flow meter, 8. Coriollis mass flow meter, 9. Variable Area flow meter(Rotameter)

Restriction Orifice plate

As shown in the picture, Restriction orifice plates are obstruction in the pipeline to create pressure difference between inlet and outlet of this plates. As per #Bernoulli’s equation, flow of the fluid is proportional to difference in the pressure at any point in the pipeline.

Types of Orifice plates: 1. Concentric, 2. Eccentric 3. Segmental

Concentric Orifice has hole in the center, eccentric has hole off center & segmental has a segment cut from the plate.

2. Flow nozzle: Flow nozzles are another way of creating pressure difference at two points in the pipeline.

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3. Ventury Tube: Ventury tube is narrow tube as shown in the pic below, coz of difference in the pipe diameter at different points, there will be a pressure difference between two taps, which can be later used to measure pressure difference & hence flow rate of the fluid.

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Lesson Posted on 14/03/2020 Tuition/BSc Tuition/General Chemistry For Maths & Physics

Maharashtra board x 2020 trignometry

Venkatesan Iyer

I have done Ph.D(Management) from I.I.T.Bombay and done basic degree in Engineering. I have taught...

If sinα+(sinα)^2=1 Show that (cosα)^2+(cosα)^4=1 sinα+(sinα)^2=1<---- eqn 1 sinα=1-(sinα)^2 (sinα)^2+(cosα)^2=1 (identity) sinα=(cosα)^2 Subsitute this in eqn 1 (cosα)^2+((cosα)^2)^2=1 (cosα)^2+(cosα)^4=1 Proved. ... read more

If sinα+(sinα)^2=1

Show that (cosα)^2+(cosα)^4=1

sinα+(sinα)^2=1<---- eqn 1

 

sinα=1-(sinα)^2

(sinα)^2+(cosα)^2=1 (identity)

sinα=(cosα)^2

Subsitute this in eqn 1

(cosα)^2+((cosα)^2)^2=1

(cosα)^2+(cosα)^4=1

Proved.

 

 

 

 

 

 

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Answered on 09/03/2020 Tuition/BSc Tuition

V Sriram kumar V sriram kumar

Senior Statistics Teacher with 20 years of experience from University of Hyderabad

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Answered on 09/03/2020 Tuition/BSc Tuition Tuition/BSc Tuition/Basic Clinical And Pharmaceutical Chemistry

Pratik Kumar

Maths teacher (11 &12,board+iit jee+quant. Aptitude for cat) .Vedantu jee, unacademy.

Ribonucleic acid is its full form and structure similar to DNA
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Answered on 09/03/2020 Tuition/BSc Tuition Tuition/BSc Tuition/BSc Physics

Pratik Kumar

Maths teacher (11 &12,board+iit jee+quant. Aptitude for cat) .Vedantu jee, unacademy.

it depends on your academic performance and your hard work. if you are good in studies then coaching is good else take tuitions >private tuitions from me as i have helped many of students to crack jee. read more

it depends on your academic performance and your hard work.

if you are good in studies then coaching is good

else take tuitions >private tuitions from me as i have helped many of students to crack jee.

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