Why inductance is called electrical inertia?

by

1 Answer

Answer :

The size of the induced electromotive force is proportional to the rate of change of theelectric current. ... The self-inductance of a coil, or simply its inductance, may thus be thought of as electromagnetic inertia, a property that opposes changes both in currents and in magnetic fields.

by

Related questions

The greatest single cause of electrical failures is ______. A. the breakdown of insulation B. overcurrent C. high inductance D. too frequent testing

Description : The greatest single cause of electrical failures is ______. A. the breakdown of insulation B. overcurrent C. high inductance D. too frequent testing

Last Answer : Answer: A

effect of inductance and capacitance on performance of transmission line.

Description : effect of inductance and capacitance on performance of transmission line.

Last Answer : Following are the effect on performance of transmission line:  1. Due to inductance (L) voltage drop in transmission line produces.  2. Capacitor (C) draws charging current ... , transmission line efficiency, voltage regulation & also power factor of transmission line gets affected. 

What is inductance?

Description : What is inductance?

Last Answer : Inductance is the property of Material by which it opposes the any change of magnitude or direction of electric current passing through the conductor. The inductance is denoted by L. The unit of inductance is Henry (H).

Self inductance formula

Description : Self inductance formula

Last Answer : Self inductance formula

Self induced voltage across an inductance

Description : Self induced voltage across an inductance

Last Answer : Self induced voltage across an inductance

State the effects of errors in dynamometer type wattmeter due to i) pc- inductance ii) pc- capacitance iii) mutual inductance iv) Connection.

Description : State the effects of errors in dynamometer type wattmeter due to i) pc- inductance ii) pc- capacitance iii) mutual inductance iv) Connection.

Last Answer : Errors in wattmeter:  i) pc - inductance: Pressure coil inductance causes wattmeter to read more power than actual .  ii) pc-capacitance: The wattmeter reads less power.  iii) ... iv) Connection: In uncompensated wattmeter , the reading of wattmeter includes the powerloss in coils. 

Describe with working of LCR meter for measurement of inductance.

Description : Describe with working of LCR meter for measurement of inductance. 

Last Answer : working of LCR:- A LCR meter (Inductance (L), Capacitance (C), and Resistance (R) test equipment used to measure the inductance, capacitance and, resistance of a component. It works on the ... in parallel (as would be encountered in measuring a capacitor with a leaky dielectric) [Q setting ] 

Define :i) Self inductance ii) Coefficient of self induction

Description : Define :i) Self inductance ii) Coefficient of self induction

Last Answer : i) Self-inductance: It is the property by virtue of which a coil opposes change in current flowing through it by inducing an emf in it such that its effect is to circulate current (induced current) that produces a magnetic field ...          N = di/dt        N = Φ/I  It is expressed in henry.  

A coil of 500 turns is linked with a flux of 25 mwb, when carries a current of 12.5A. Calculate the value of self-inductance.

Description : A coil of 500 turns is linked with a flux of 25 mwb, when carries a current of 12.5A. Calculate the value of self-inductance.

Last Answer : Ans: Self-Inductance: L = NΦ /I = 500 × 25 × 10-3 / 12.5 = 1 H

In practice, a current source inverter consists of an AC/ DC converter with a large inductance ‘L’ in the output.

Description : In practice, a current source inverter consists of an AC/ DC converter with a large inductance ‘L’ in the output. This inductance maintains a ……… …………through the switching devices over short interval of time. A) constant current B) constant voltage C) constant power D) none of the (A), (B), (C)

Last Answer : In practice, a current source inverter consists of an AC/ DC converter with a large inductance ‘L’ in the output. This inductance maintains a constant current through the switching devices over short interval of time. 

An iron cored inductance coil can be modelled, over a normal operating range of networks ,as

Description : An iron cored inductance coil can be modelled, over a normal operating range of networks ,as A) non-Linear bilateral element B) linear bilateral element C) linear time varying element D) non-linear time invariant element

Last Answer : An iron cored inductance coil can be modelled, over a normal operating range of networks ,as linear bilateral element

These self inductance of a circuit is defined as twice the work done against the induced e.m.f.

Description : These self inductance of a circuit is defined as twice the work done against the induced e.m.f. on establishing unit current in the coil. If the current to be established in the coil is doubled, the work done ... induced e.m.f. will be  1. Doubled  2. Halved  3. four times  4. Quarter times 

Last Answer : These self inductance of a circuit is defined as twice the work done against the induced e.m.f. on establishing unit current in the coil. If the current to be established in the coil is doubled, the work done against the induced e.m.f. will be four times

lt the length, number of turns and area of a coil are doubled, the inductance of the coil

Description : lt the length, number of turns and area of a coil are  doubled, the inductance of the coil

Last Answer : lt the length, number of turns and area of a coil are  doubled, the inductance of the coil is quadrupled

A coil of inductance 240 mH and resistance 75 Ohm is connected in parallel with a capacitor across a 30 V,

Description : A coil of inductance 240 mH and resistance 75 Ohm is connected in parallel with a capacitor across a 30 V, variable frequency supply. The current drawn by the circuit is found to be minimum when the supply frequency is 1 kHz. The ... (A) 40, 400 Hz (B) 10, 100 Hz (C) 20, 50 Hz (D) 50, 20 Hz

Last Answer : A coil of inductance 240 mH and resistance 75 Ohm is connected in parallel with a capacitor across a 30 V, variable frequency supply. The current drawn by the circuit is found to be minimum ... supply frequency is 1 kHz. The approximate values of Q-factor and bandwidth are, respectively 20, 50 Hz

A network consists of several inductances connected in parallel. The equivalent inductance of the network is

Description : A network consists of several inductances connected in parallel. The equivalent inductance of the network is given by (A) the sum of the individual inductances. (B) the reciprocal of the ... of individual inductances. (D) the reciprocal of the sum of reciprocals of individual inductances.

Last Answer : A network consists of several inductances connected in parallel. The equivalent inductance of the network is given by the reciprocal of the sum of reciprocals of individual inductances.

What is the value of Inductance of a coil that induces 20 V when the current through the coil changes from...

Description : What is the value of Inductance of a coil that induces 20 V when the current through the coil changes from 12 to 20 A in 2 seconds? A. 2 H B. 3 H C. 4 H D. 5 H 

Last Answer : 5 H is the value of Inductance of a coil that induces 20 V when the current through the coil changes from 12 to 20 A in 2 seconds.

An undesirable side effect of motional inductance of large conduction specimens is

Last Answer : An undesirable side effect of motional inductance of large conduction specimens is eddy currents.

A series RLC circuit has a resistance of 50 , inductance of 0.4H and a...

Description : A series RLC circuit has a resistance of 50 , inductance of 0.4H and a capacitor of 10µF. The circuit is connected across a 100V supply. The resonance frequency and the current through the resistance are 

Last Answer : A series RLC circuit has a resistance of 50 , inductance of 0.4H and a capacitor of 10µF. The circuit is connected across a 100V supply. The resonance frequency and the current through the resistance are 500 rad/s and 2A.

Two similar coils have self inductance of 1 mH each. Coefficient of ...

Description : Two similar coils have self inductance of 1 mH each. Coefficient of coupling is 0.5. The mutual inductance M is

Last Answer : Two similar coils have self inductance of 1 mH each. Coefficient of coupling is 0.5. The mutual inductance M is 0.5 mH.

Inductance coils are basically designed for

Last Answer : Inductance coils are basically designed for High Q.

The initial rate of rise of current through a coil of inductance 10 H when suddenly...

Description : The initial rate of rise of current through a coil of inductance 10 H when suddenly connected to a D.C. supply of 200 V is_______Vs.

Last Answer : The initial rate of rise of current through a coil of inductance 10 H when suddenly connected to a D.C. supply of 200 V is 20 Vs

When both the inductance and resistance of a coil are doubled the value of?

Description : When both the inductance and resistance of a coil are doubled the value of?

Last Answer : When both the inductance and resistance of a coil are doubled the value of time constant remains unchanged.

The inductance of a coil can be increased by?

Description : The inductance of a coil can be increased by?

Last Answer : The inductance of a coil can be increased by choosing core material having high relative permeability.

If resistance is 20 Q. and inductance is 27 in a R-L series circuit, then time constant of this circuit will be?

Description : If resistance is 20 Q. and inductance is 27 in a R-L series circuit, then time constant of this circuit will be?

Last Answer : 0.1s

Inductance of coil?

Description : Inductance of coil?

Last Answer : Inductance of coil increases with the increase in supply frequency.

Inductance of a coil Varies?

Description : Inductance of a coil Varies?

Last Answer : Inductance of a coil Varies as directly as the cross-sectional area of magnetic core and inversely as the length of the iron path.

Inductance affects the direct current flow?

Description : Inductance affects the direct current flow?

Last Answer : Inductance affects the direct current flow at the time of turning on and off.

In series resonant circuit, increasing inductance to its twice value and reducing capacitance to its half value?

Description : In series resonant circuit, increasing inductance to its twice value and reducing capacitance to its half value?  

Last Answer : In series resonant circuit, increasing inductance to its twice value and reducing capacitance to its half value will increase the selectivity of the circuit.

Define resistance capacitance & inductance

Last Answer : Resistance: This could be defined as the opposition  or retarding force to the flow of current in a circuit. It is measured in Ohms. Capacitance: The ability of a system of electrical conductors and insulators ... due to a rate of change of current in the circuit or coil. It's unit is Henry.

What is the reciprocal of inductance?

Description : What is the reciprocal of inductance?

Last Answer : This term is not exist

What is the unit of inductance?

Last Answer : Unit of inductance is Henry denoted by capital H .

What are the factors on which inductance depends?

Last Answer : 1)no of turns 2)area of coil 3)length of coil 4)thickness of conductor

Why inductance increases with frequency?

Last Answer : The voltage across an inductor is directly proportional to inductance (V=L*di/dt*I).And the voltage is Also directly proportion to frequency.

If the inertia constant H of a machine of 200 MVA is 2 p.u., its value corresponding to 400 MVA will be

Description : If the inertia constant H of a machine of 200 MVA is 2 p.u., its value corresponding to 400 MVA will be   (a) 4 p.u. (b) 2 p.u. (c) 1.0 p.u. (d) 0.5 p.u. 

Last Answer : If the inertia constant H of a machine of 200 MVA is 2 p.u., its value corresponding to 400 MVA will be 1.0 p.u.

A 60 Hz, 4 pole turbo generator rated 100 MVA, 13.8 KV has an inertia constant of 10 MJ/MVA. Find the stored...

Description : A 60 Hz, 4 pole turbo generator rated 100 MVA, 13.8 KV has an inertia constant of 10 MJ/MVA. Find the stored energy in the rotor at synchronous speed.  (A) 10 MJ (B) 100 J (C) 1000 J (D) 1000 MJ 

Last Answer : c

The opposition to the establishment of magnetic lines of force in a magnetic circuit is called the circuit's _______. A. resistance B. reluctance C. impedance D. inductance

Description : The opposition to the establishment of magnetic lines of force in a magnetic circuit is called the circuit's _______. A. resistance B. reluctance C. impedance D. inductance

Last Answer : Answer: B

The resistance in a magnetic material is called as a) Capacitance b) Inductance c) Reluctance d) Magnetic resistance

Description : The resistance in a magnetic material is called as a) Capacitance b) Inductance c) Reluctance d) Magnetic resistance

Last Answer : c) Reluctance

The phenomenon of producing emf in the coil due to change of current in the coil itself is called: a. mutual induction b. self-induction c. self-inductance d. mutual inductance

Description : The phenomenon of producing emf in the coil due to change of current in the coil itself is called: a. mutual induction b. self-induction c. self-inductance d. mutual inductance

Last Answer : d. mutual inductance

Reciprocal of resistivity is called a. Resistance b. Inductance c. Conductivity d. Flexibility

Description : Reciprocal of resistivity is called a. Resistance b. Inductance c. Conductivity d. Flexibility

Last Answer : c. Conductivity

On what subject does inductance in transmission line depend ?

Description : On what subject does inductance in transmission line depend ?

Last Answer : a) On the line b) Conductor spacing c) Conductor radius

What is the effect of resistance , inductance and capacitance in transmission line ?

Description : What is the effect of resistance , inductance and capacitance in transmission line ?

Last Answer : These 3 factors create voltage drop and power loss of the line. The inductive reactance creates a voltage drop across the line and the capacitance creates a charging current.

Inductance Who Say ?

Last Answer : no Conductive The middle With Variable Current Of flow Due Generated Magnetic Of the field Strength Of change As a result 3 In the conductor Voltage Obsessed To be Affordability Inductance To say Is. And That said To the conductor Inductor To say Is.

Mutual Inductance What?

Last Answer : that Features Or Of religion Due As well as Two Coil Of one Of current Of change As a result In the other Voltage Obsessed Is That said Religion Or Features Mutual Inductions Says.

A capacitor of capacity `2muF` is changed to a potential different of `12V` . It is then connected across an inductor of inductance `0.6mH` What is th

Description : A capacitor of capacity `2muF` is changed to a potential different of `12V` . It is then connected across an inductor of inductance `0.6mH` What is th

Last Answer : A capacitor of capacity `2muF` is changed to a potential different of `12V` . It is then ... potential difference across the capacitor is `6.0V` ?

A coil =of inductance `L=50muH` and resistance =`0.5Omega` is connected to a battery of emf=5A. A resistance of `10Omega` is connected parallel to the

Description : A coil =of inductance `L=50muH` and resistance =`0.5Omega` is connected to a battery of emf=5A. A resistance of `10Omega` is connected parallel to the

Last Answer : A coil =of inductance `L=50muH` and resistance =`0.5Omega` is connected to a battery of emf=5A. A resistance ... is (0.02)x in mJ. Find valuie of x.

In the circuit shown the cell is ideal. The codil has an inductance of 2H and will blow when the current through it reaches 5a. The switch is closed a

Description : In the circuit shown the cell is ideal. The codil has an inductance of 2H and will blow when the current through it reaches 5a. The switch is closed a

Last Answer : In the circuit shown the cell is ideal. The codil has an inductance of 2H and will blow when the ... Find the time (in second)n when fuse will blow.

The circuit shows a resistance, `R=0.01Omega` and inductance L=3mH connected toa conducting rod PQ of length l=wm which can slide on a perfectly condu

Description : The circuit shows a resistance, `R=0.01Omega` and inductance L=3mH connected toa conducting rod PQ of length l=wm which can slide on a perfectly condu

Last Answer : The circuit shows a resistance, `R=0.01Omega` and inductance L=3mH connected toa conducting rod PQ of length l= ... (inN-m) at t=(0.3In 2) second.

The circuit shows a resistance, `R=0.01Omega` and inductance L=3mH connected to a conducting rod PQ of length l=wm which can slide on a perfectly cond

Description : The circuit shows a resistance, `R=0.01Omega` and inductance L=3mH connected to a conducting rod PQ of length l=wm which can slide on a perfectly cond

Last Answer : The circuit shows a resistance, `R=0.01Omega` and inductance L=3mH connected to a conducting rod PQ of length ... (inN-m) at t=(0.3In 2) second.

Two coils have a mutual inductance 0.005H. The current changes in the first coil according to the equation `I=I_(0) sin omegat "where" I_(0)=10A and o

Description : Two coils have a mutual inductance 0.005H. The current changes in the first coil according to the equation `I=I_(0) sin omegat "where" I_(0)=10A and o

Last Answer : Two coils have a mutual inductance 0.005H. The current changes in the first coil according to the equation `I ... (pi//x)` volts. Find the value of x.

The current in ampere through an inductor is i(10+20t) Here t is in second. The induced emf in the inductor 4V. The self inductance of the indicator i

Description : The current in ampere through an inductor is i(10+20t) Here t is in second. The induced emf in the inductor 4V. The self inductance of the indicator i

Last Answer : The current in ampere through an inductor is i(10+20t) Here t is in second. The induced emf in the inductor 4V. The ... B. `0.4` C. `0.1` D. `1.0`