Write the limitations of Kelvin's formula ?

1 Answer

Answer :

As sometimes the cross section of the wire is so low that the regulation increases as the voltage drop increases . Increases , interest and waste change as space and time change.

Related questions

Description : Write Kelvin's formula ?

Last Answer : In the case of energy transport , the cross-section of the lowest cost line conductor will occur only when the annual waste and interest cost is equal to the annual waste cost .

Description : Write the formula from Star to Delta ?

Last Answer : Answer : Dividing the product of the resistors connected to the star by dividing the resistors of the opposite arm by taking two together, the quotient is equal to the value of each resistor connected.

Description : Write the formula for inductive reaction ?

Last Answer : Formula for inductive reactance: XL = 2τƒL . It depends on the frequency and inductance of the coil. Since the inductance of a coil is constant, its inductive reactance changes at a rate proportional to the change in frequency.

Description : Transformer is based on which formula ?

Last Answer : It is based on Faraday's formula. Now the question may arise that Mr. Faraday said that in order to occupy a magnetic field with another coil, one of them must move. Tachara flux will not be obsessed ... DC. So it does not have to be shaken separately. Because its waves tend to be self-evident.

Description : What is the formula of lens ?

Last Answer : The direction of the electric current induced by the electromagnetic induction will be such that the flow will always interfere with the cause of the current.

Description : What is the formula for synchronous speed ?

Last Answer : Synchronous speed formula Ns = 120f / p

Description : What is Lenz's formula ?

Last Answer : The induced current flowing through the conductive wire due to the induced electromagnetic ball creates a magnetic field around the conductor wire , which prevents the origin of the induced current through it (i.e. the changing magnetic field).

Description : When does the formula of resistance apply ?

Last Answer : When it is necessary to know the resistance of a conductor, the resistance formula is required.

Description : What is the formula for determining the power in a circuit ?

Last Answer : The formula for circuit power is P = V * I watt here , P is power V is voltage I is current.

Description : What is the formula for diagnosing voltage deficiency ?

Last Answer : The formula for determining voltage deficit is V = IR

Description : What is the formula for determining the efficiency of generator ?

Last Answer : Generator efficiency = (effective power * 100) / given power

Description : What is the formula for motor efficiency ?

Last Answer : Motor efficiency = (output / input) 100

Description : What is Ohm's voltage formula ?

Last Answer : : Current flowing through a conductor at a constant temperature is proportional to the voltage across the two ends of the conductor. Or the current flowing through a conductor at a constant ... to the voltage difference between the two ends of that conductor and disproportionate to the resistance.

Description : Write different font names or different short circuit font names ?

Last Answer : There are two main types of short circuit faults. Namely- 1. Semantic faults and 2. Asymmetrical font Symmetrical fault - a) Short circuit three phases together b) Short circuit asymmetrical fault with three ... result c) Double line to ground font d) Two phase one Circuit and third phase earth.

Description : Write the maximum power transfer theorem ?

Last Answer : The maximum power transfer from a DC source to a resistive load will occur only when the internal resistance is equal to the series resistance connected to the load resistance source .

Description : Write the Thebin Theorem ?

Last Answer : The current of a load resistance connected to two points of a complex network consisting of multiple sources of EMF and resistance will be the same if the load is connected to a single fixed source of EMF .

Description : Write the types of modulation and demodulation ?

Last Answer : There are three main types of modulation. Namely: (a) Amplitude modulation: The modulation in which the amplitude of the carrier signal changes according to the modulating frequency is called ... the carrier signal changes according to the modulating frequency is called phase modulation.

Description : Write the use of diode ?

Last Answer : : Use of diode The use of diode is given below: (a) Acts as rectifier. (B) Acts as a dimulator or detector. (C) Acts as a switch. (D) Used in wave shaping circuits.

Description : Write the use of ginner diode ?

Last Answer : : Ginner diodes are used in the following places: (a) for DC voltage stabilizer and regulation. (B) To limit the amplitude of AC voltage. (C) Analog circuits. (D) Used in power circuits and ... diode is used in clippers circuit. (G) Ginner diodes are used in clipper clamper and protector circuits.

Description : Write the use of LED ?

Last Answer : The use of LEDs is highlighted below: (a) For digital display on decaed instruments. (B) In digital watch. (C) On the computer. (D) In all the techniques in which invisible light is used. ... in image sensing circuit. (G) LED is used in silica fiber optical cable in optical communication circuit .

Description : Write the properties of LED ?

Last Answer : LED features ( i) Fast on-off switching. ( ii) It is longevity. ( iii) Voltage consumption is low. ( iv) Gallium arsenide is used to obtain infrared algae.

Description : Write using photo diode ?

Last Answer : : Use of photo diode (a) to operate the relay circuit , ( b) to read the punch card of the computer fast , ( c) to automatically control the angle system , ( d) to determine the number ... , ( F) are used for controlling photoelectric resistors , ( g) are used for voltage and heat control systems.

Description : Write the properties of photo diode ?

Last Answer : : Features of photo diode ( i) It works based on Ala. ( ii) When the temperature is high, the resistance decreases , resulting in more current flowing. ( iii) When the light is low, the resistance increases , so the current flows less.

Description : Write the use of UPS ?

Last Answer : UPS is used to provide uninterrupted power supply to computer , medical equipment, and electrical devices, and to protect the device from voltage regulation , overvoltage , and undervoltage .

Description : Write speaker usage ?

Last Answer : The speaker is used in the following cases. Namely: (a) Used to convert amplified electrical energy into human audible sound energy. (B) For the production of sound waves in radio and ... sound in public address system , tape recorder , computer amplifier. (D) Used in telecommunication equipment.

Description : How many kelvins is equal to ten degrees centigrade ?

Last Answer : Ten degrees centigrade equals 283 Kelvin.

Last Answer : 1 degree Celsius = 263.15 Kelvin and 2 degree Celsius = 548.3 Kelvin.

Description : If The boiling point of ethanol is 78.3 degrees Celsius what is the boiling point of ethanol kelvins?

Last Answer : To change C to K just add 273.01 to the C temperature (78.3 C =351.3 K) You might think it is 351. 31 K but the originaltemperature was only accurate to one decimal place.

Description : If a substance has a temperature of 273 kelvins, what is its temperature in degrees Celsius Note: C = K - 273?

Last Answer : Answers is the place to go to get the answers you need and to ask the questions you want

Description : What is kelvin's economy law?

Last Answer : Most economical cross section area of conductor is that which makes annual cost of energy loss equal to annual interest & depreciation on capital cost of conductor.

Description : The variation of heat of reaction with temperature at constant pressure is given by the __________ law. (A) Kelvin's (B) Antoine’s (C) Kirchoff’s (D) None of these

Last Answer : (C) Kirchoff’s

Description : If variable part of annual cost on account of interest and depreciation on the capital outlay is equal to the annual cost of electrical energy wasted in the conductors, the total annual cost will be minimum and the ... (b) Ohm's law (c) Kirchhoffs law (d) Faraday's law (e) none of the above

Last Answer : (a) Kelvin's law

Description : Kelvin’s Double Bridge Practical

Last Answer : Practical Significance The conductors are generally made from copper & aluminum. They are having low resistance. It is essential to measure its resistance precisely to calculate the voltage drop per kilometer when ... for 2/3 samples. 7. Calculate the value of unknown resistance R.

Last Answer : Kelvin's double bridge is used to measure low resistances because effect of contact and lead resistances is eliminated.

Description : What is the conductivity of molar ?

Last Answer : The density of a solution as cm. When one mole of electrolytic substance is dissolved in it, the conductivity obtained by multiplying it by the relative conductivity of the solution is called molecular conductivity of the solution .

Description : How do I purchase a product ?

Last Answer : From Alibaba you can purchase products by paying MASTER CARD or through bank.

Description : What is an analog signal ?

Last Answer : Signals whose values ​​change continuously are called analog signals. For example- voltage of electricity supplied to the house.

Description : What is Zener Diod ?

Last Answer : Zener diode is a special type of diode which, like ordinary diode, not only conducts current in the forward direction , but also in the opposite direction if the voltage exceeds the level of breakdown ... diode is to use the shunt regulator and the voltage reference as the voltage of the circuit.

Description : What is the multiplying factor of shunt ?

Last Answer : Answer : The ratio of load or matte current to ammeter current is called shunt multiplying power.

Description : What is ammeter shunt ?

Last Answer : A small amount of radial coupling in parallel with the coil to increase the range of ammeter is called ammeter shunt.

Description : What is short circuit current ?

Last Answer : Answer : A fault in an electrical system whose current, before or after the current flows through the load, is combined with one or more phases of neutral current which causes more current to flow than normal. The current is called short circuit current.

Description : What is a current limiting reactor ? How many types and what are they ?

Last Answer : Answer : A current limiting reactor is basically an inductive coil which limits the short circuit current by providing inductive reactance when required. Types: 1. Based on the structure- a) Dry type ... reactor. Basbar reactors are again of 2 types- a) Ring system reactor b) Tiber system reactor

Description : What is the method of diagnosing short circuit current ?

Last Answer : There are three methods for determining short circuit current , namely- 1) Ohmic method 2) Per unit method 3.) Percentage reactance method.

Description : What are symmetrical and asymmetrical faults ?

Last Answer : Symmetrical Fault: The same amount in each phase due to the float in the electrical system. The fault that causes hot current to flow is called semantic fault. Circuit breaker ratings are determined by ... through each fan is called an asymmetrical fault. The relay is set via asymmetrical font.

Description : What is Basbar and Bas Kaplar ?

Last Answer : Basbar : Basbar is basically a sheet or color of copper or aluminum. It is the job of the bus driver to deliver power to one or more lads with power from one or more cables. Bus ... is basically a combination of circuit breaker and isolator. There are fire proof walls around the bus coupler.

Description : Why is the busbar sectionalized ?

Last Answer : Answer : If an error occurs in any part of the busbar, the operation of the entire busbar system will not stop. The maximum success of this system is due to the interconnection of different sections of the circuit and the smooth distribution in the outgoing circuit.

Description : title : _

Last Answer : Basbar is a type of copper and aluminum conductive sheet or mata rod , which collects electrical energy from one or more circuits and distributes that energy through one or more circuits.

Description : What is Electrical Fault ? What is the cause of the fault ?

Last Answer : Answer : Fault: When two or more conductors come in contact with each other while operating at normal voltage difference, the result is said to be organized. Causes of Fault: Faults are organized due to ... loss of line c) Lightning charge d) Voltage drop e) Loss of unbalance and stability etc.

Description : What features should a switchgear have ?

Last Answer : Switchgear should have the following characteristics- a) Sensitivity b) Detection ability c) Reliability d) High speed e) Durability. F) Expansion advantage g) Simplicity.