Problems on resistance and resistivity

1 Answer

Answer :

Problem on resistance and resistivity 1 : https://youtu.be/OqavD7OlZUs

Problem on resistance and resistivity 2 : https://youtu.be/0eo8VO8cpwk

Problem on resistance and resistivity 3 : https://youtu.be/Ujx4-pwM9-U

Problem on resistance and resistivity 4 : https://youtu.be/Boci2bwuVrA

Problem on resistance and resistivity 5 : https://youtu.be/gjh4p_z8wco

Problem on resistance and resistivity 6 : https://youtu.be/p2-ArZWTxE8

Problem on resistance and resistivity 7 : https://youtu.be/CrDLi4vN4GI

Problem on resistance and resistivity 8 : https://youtu.be/uGa6R4jBKeQ

Problem on resistance and resistivity 9 : https://youtu.be/JvYP3N-MMv4

Problem on resistance and resistivity 10 : https://youtu.be/_pai1Sx6UE8

Problem on resistance and resistivity 11 : https://youtu.be/5Iu2js98ZJ0

Problem on resistance and resistivity 12 : https://youtu.be/3neLRCTz0RQ

Problem on resistance and resistivity 13 : https://youtu.be/vBCkvPOiztY

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Description : Problem on resistance and resistivity 13

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Description : Problem on resistance and resistivity 12

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Description : Problem on resistance and resistivity 10

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Description : Problem on resistance and resistivity 9

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Description : Problem on resistance and resistivity 8

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Description : Problem on resistance and resistivity 6

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Description : Problem on resistance and resistivity 5

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Description : Problem on resistance and resistivity 4

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Description : Problem on resistance and resistivity 3

Last Answer : Problem on resistance and resistivity 3

Description : Problem on resistance and resistivity 2

Last Answer : Problem on resistance and resistivity 2

Description : Problem on resistance and resistivity 1

Last Answer : Problem on resistance and resistivity 1

Description : Problems on electrical power and energy

Last Answer : Problem on electrical power and energy 1 : https://youtu.be/ZvWHuMdmv9g Problem on electrical power and energy 2 : https://youtu.be/19IZMc6U2vs Problem on electrical power and energy 3 : https ... : https://youtu.be/iYqGIwA919A Problem on electrical power and energy : https://youtu.be/iWnWQz_mzHk

Description : State the impact of inductance and resistance on transmission line performance

Last Answer : Impact of inductance on transmission line: 1) It causes IXL drop in transmission line which affects regulation. 2) It is the only parameter which decides power transmission capacity of line i. ... is very small, it causes losses, temperature rise& poor voltage regulation so it cannot be neglected

Description : Problem on temperature coefficient of resistance 3

Last Answer : Problem on temperature coefficient of resistance 3

Description : Problem on temperature coefficient of resistance 2

Last Answer : Problem on temperature coefficient of resistance 2

Description : Problem on temperature coefficient of resistance 1

Last Answer : Problem on temperature coefficient of resistance 1

Description : Problem on electrical power and energy 2

Last Answer : Problem on electrical power and energy 2

Description : Problem on electrical power and energy 1

Last Answer : Problem on electrical power and energy 1

Description : Problem on electrical power and energy 7

Last Answer : Problem on electrical power and energy 7

Description : Problem on electrical power and energy 6

Last Answer : Problem on electrical power and energy 6

Description : Problem on electrical power and energy 5

Last Answer : Problem on electrical power and energy 5

Description : Parallel Reactance and Resistance Example 1

Last Answer : Parallel Reactance and Resistance Example 1

Description : Analyze the effect of supply voltage on performance of LED as regards current, Lumen output, efficacy and life. 

Last Answer : 1) Effect on Current:- In LED current depends upon supply voltage, if voltage get changes then current also change but this change in current will be control by resistors which are connected in series.  2) ...   4) Effect on Life:- If supply voltage is not stable then life of LED get reduced. 

Description :  Compare the salient features of LED and CFL based on: i] Lamp Efficiency ii] Life span 

Last Answer : Parameter LED CFL Lamp Efficiency  High (more than 70 lumen per watt) Comparatively less (50-60 lumen per watt) Life span (in working hours) 10000 3000

Description : What do you mean by exciting resistance and exciting reactance?

Last Answer : At no-load, a transformer behaves as a highly inductive load connected to the system which contains some resistance and inductance in parallel. The resistance is called exciting resistance R0 = V1/I w and reactance is called exciting reactance, X0 = V1/I mag

Description : Define resistivity. State its unit.

Last Answer : Resistivity can be defined as the resistance of a conducting material per unit length with unit area of cross section. Its unit is ohm/meter

Description : Which material has low resistivity?

Last Answer : Silver have lowest resistivity then copper then aluminium tungsten then iron...

Description : What factors affect resistivity?

Last Answer : 1)type of material 2)temperature 3)length and area of cross section of conductor

Description : What is the formula for resistivity?

Last Answer : Resitivity is the property of a material. It is given in ρ . R=ρ L/A is the formula. where , Resitance is directly proportional to Length & Inversely proportional to Area of ... the resistance offered by a conductor to the flow of current is called specific resistance or resistivity.

Description : What is the reciprocal of resistivity?

Last Answer : conductivity, mho

Description : resistivity of wire depend on?

Last Answer : Resitivity of wire depends on material, electrical resistance of that material, area of cross section and length.

Description : Mesh analysis problems

Last Answer : Mesh analysis 1 : https://youtu.be/X_nWbAkDoH4 Mesh analysis 2 : https://youtu.be/-GzGDUZN56A Mesh analysis 3 : https://youtu.be/AsZlXbO_82M Mesh analysis 4 : https://youtu.be/D8zLPMFhwlg ... Mesh analysis 22 : https://youtu.be/XSOZ1urxvpc Mesh analysis 23 : https://youtu.be/wwBI15MznQY

Description : What simple thing or task do you have problems with?

Last Answer : Calculating without a calculator .

Description : Are "first world problems" still problems? Do they matter?

Last Answer : answer:I reserve first world problems for things that are truly trivial - that is, the fact that this is what you consider a problem shows your privilege. I missed hot yoga class ... a patient because you are afraid to vaccinate your kids against preventable illness is a first world problem.

Description : What are your real first world problems?

Last Answer : answer:It's one of my biggest annoyances when I'm told - as I have been told by people right here on ask-public - that when I go hungry here, it's somehow different or better than someone who ... wherever she or he is, is already being completely ignored; which is why he or she is that person.)

Description : New vid card, new problems, can you help me out?

Last Answer : Do you have a 32 bit version of windows?

Description : What are some "deep" math problems?

Last Answer : answer:There are the Clay Institute Millennium Prize problems, with a cool $1M prize for solving. Of the 7 problems, 6 remain unsolved. (The Poincare conjecture was proved by Grigori Perelman, who ... , though history shows that these sometimes later turn up at the core of new physical theory.

Description : What problems are so trivial that you don't even want to hear about them?

Last Answer : I don’t worry so much anymore about the neighbor who let’s their f’n dog pee on the bushes right near my front steps. It just isn’t that important anymore.

Description : Septic Tank Problems

Last Answer : The septic tank is the heart of any septic system. Like the human heart, the human body and the other organs are pointless without it. A septic system simply isn't the same without a septic tank. In ... it. Naturally, septic systems last a long time if cared for properly. Now you know what to do.

Description : Fuel Pump Problems

Last Answer : Fuel pump problems are usually caused by running a car for extended periods of time on a tank that is almost empty. This causes the fuel pump to run dry, which eventually damages the pump. Another cause ... your car to stall, bring it to the repair shop so professionals can have a look at it.

Description : Nodal analysis problems

Last Answer : Nodal analysis problem 2

Last Answer : A.C. network analyser is used to solve problems of load flow, short-circuit and stability.

Description : State two applications of : (i) PVC paper (ii) Porcelain with type of class based on withstand temperature is insulating material. 

Last Answer :  (i) Application of PVC paper : 1. It is used in slot lining or motor winding insulation purpose 2. For Insulation of Transformer winding (ii) Application of Porcelain : 1. Mainly used for manufacturing ... on withstand temperature : * H' & C' Class of insulation i e. 180° and above 180°C 

Description : State one application of clip on meter.

Last Answer : Clip-on meter is used to measure the High value AC current without breaking the circuit Or without opening the circuit.

Description : Problem on capacitor

Last Answer : Problem on capacitor 1 : https://youtu.be/ZyT3WOFN8fs Problem on capacitor 2 : https://youtu.be/JBwEfekvutE Problem on capacitor 3 : https://youtu.be/E1lhIn5t8Mo Problem on capacitor 4 : https://youtu.be/yl651f4IUfg

Description : what is the minimum voltage required to turn on a diode ?

Last Answer : 0.7 v sil and 0.3 v for gr

Description : State the procedure for testing of earth pit resistance with necessary diagrams.

Last Answer : Following procedure (Method) for testing of earth pit resistance with necessary diagrams. 1) Earth Tester : i) Three point method ii) Four point method 2) By Potential drop method 3 ... of that earthing pit. In this test the accuracy is less but electrical rods are not required. 

Description : what is equivalent resistance when four 4 Ohm resistors are connected in i) series ii) parallel

Last Answer : equivalent resistance