Inductance

Inductance

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Inductance

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State the impact of inductance and resistance on transmission line performance

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

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

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 ] 

For 11kV line the inductance per km per phase will be of the order of:

Description : For 11kV line the inductance per km per phase will be of the order of:  (A) 1 H (B) 0.1 H (C) 1 mH (D) 0.1 mH

Last Answer : For 11kV line the inductance per km per phase will be of the order of: 1 mH

The self inductance of a coil can be measured using

Description : The self inductance of a coil can be measured using (A) Wien’s Bridge (B) Schering Bridge (C) Anderson’s Bridge (D) Wheatstone Bridge

Last Answer : The self inductance of a coil can be measured using Anderson’s Bridge

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

The bridge method commonly used for finding mutual inductance is

Description : The bridge method commonly used for finding mutual inductance is (A) Heaviside Campbell bridge (B) Schering bridge (C) De Sauty bridge (D) Wien bridge

Last Answer : The bridge method commonly used for finding mutual inductance is Heaviside Campbell bridge

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.

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.

If an inductance is connected in one arm of bridge and resistances in the remaining three arms?

Last Answer : If an inductance is connected in one arm of bridge and resistances in the remaining three arms the bridge cannot be balanced.

For measurement of inductance having high value, we should use?

Last Answer : For measurement of inductance having high value, we should use Hay's bridge.

For measurement of mutual inductance we can use?

Last Answer : For measurement of mutual inductance we can use Heaviside bridge.

In an Anderson bridge, the unknown inductance is measured in terms of?

Last Answer : In an Anderson bridge, the unknown inductance is measured in terms of known capacitance and resistance.

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 .

An A.C. voltage is impressed across a pure resistance of 3.5 ohms in parallel...

Description : An A.C. voltage is impressed across a pure resistance of 3.5 ohms in parallel with a pure inductance of impedance of 3.5 ohms?

Last Answer : An A.C. voltage is impressed across a pure resistance of 3.5 ohms in parallel with a pure inductance of impedance of 3.5 ohms, both resistance and inductance carry equal currents.

Resistance

Description : Resistance

Last Answer : .embed-container { position: relative; padding-bottom: 56.25%; height: 0; overflow: hidden; max-width: 100%; } .embed-container iframe, .embed-container object, .embed-container embed { position: absolute; top: 0; left: 0; width: 100%; height: 100%; }

For one ac cycles .. alternator needs to rotate??

Description : please answer

Last Answer : 360 degree . 180 Degree Positive and 180 degree negative

An ideal power supply consist of

Description : An ideal power supply consist of   (A) Very small output resistance (B) Zero Internal resistance (C) Very large input resistance (D) Very large output resistance

Last Answer : An ideal power supply consist of Zero Internal resistance 

When a sine wave has a frequency of 100 Hz in 12 s it goes through?

Description : When a sine wave has a frequency of 100 Hz in 12 s it goes through? A.1/100 cycle B.12 cycles C.120 cycles D.1,200 cycles

Last Answer : When a sine wave has a frequency of 100 Hz in 12 s it goes through? A.1/100 cycle B.12 cycles C.120 cycles D.1,200 cycles

In order to get maximum power transfer from a capacitive source, the load must?

Description : In order to get maximum power transfer from a capacitive source, the load must? A.have a capacitive reactance equal to circuit resistance B.have an impedance that is the complex conjugate of the source impedance C.be as capacitive as it is inductive D.none of the above

Last Answer : In order to get maximum power transfer from a capacitive source, the load must? A.have a capacitive reactance equal to circuit resistance B.have an impedance that is the complex conjugate of the source impedance C.be as capacitive as it is inductive D.none of the above

Fourteen milliamperes can be expressed as?

Description : Fourteen milliamperes can be expressed as? A.14 MA B.14 μA C.14 kA D.14 mA

Last Answer : Fourteen milliamperes can be expressed as? A.14 MA B.14 μA C.14 kA D.14 mA

How much voltage is needed to produce 2.5 A of current through a 200 ohms resistor?

Description : How much voltage is needed to produce 2.5 A of current through a 200 ohms resistor? A.50 V B.500 V C.80 V D.8 V

Last Answer : 500 V

When there is 12 mA of current through a 1.2 k ohms resistor, the voltage across the resistor is?

Description : When there is 12 mA of current through a 1.2 k ohms resistor, the voltage across the resistor is? A.14.4 V B.1.4 V C.100 V D.10 V

Last Answer : When there is 12 mA of current through a 1.2 k ohms resistor, the voltage across the resistor is? A.14.4 V B.1.4 V C.100 V D.10 V

How much resistance is needed to draw 17.6 mA from a 12 volt source?

Description : How much resistance is needed to draw 17.6 mA from a 12 volt source? A.212 ohms B.6.8 kohms C.68 ohms D.680 ohms

Last Answer : How much resistance is needed to draw 17.6 mA from a 12 volt source? A.212 ohms B.6.8 kohms C.68 ohms D.680 ohms

When placed close together, two positively charged materials will?

Description : When placed close together, two positively charged materials will? A.attract B.become neutral C.become negative D.repel

Last Answer : When placed close together, two positively charged materials will? A.attract B.become neutral C.become negative D.repel

The colored bands for a 4,700 ohm resistor with a ten percent tolerance are?

Description : The colored bands for a 4,700 ohm resistor with a ten percent tolerance are? A.yellow, violet, red, gold B.yellow, violet, orange, gold C.yellow, violet, red, silver D.orange, violet, red, silver

Last Answer : The colored bands for a 4,700 ohm resistor with a ten percent tolerance are? A.yellow, violet, red, gold B.yellow, violet, orange, gold C.yellow, violet, red, silver D.orange, violet, red, silver

A certain appliance uses 350 W. If it is allowed to run continuously for 24 days, how many kilowatt- hours of

Description : A certain appliance uses 350 W. If it is allowed to run continuously for 24 days, how many kilowatt- hours of energy does it consume? A.20.16 kWh B.201.6 kWh C.2.01 kWh D.8.4 kWh

Last Answer : A certain appliance uses 350 W. If it is allowed to run continuously for 24 days, how many kilowatt- hours of energy does it consume? A.20.16 kWh B.201.6 kWh C.2.01 kWh D.8.4 kWh

When the turns ratio of a transformer is 20 and the primary ac voltage is 12 V, the secondary voltage is?

Description : When the turns ratio of a transformer is 20 and the primary ac voltage is 12 V, the secondary voltage is? A.12 V B.120 V C.240 V D.2,400 V

Last Answer : When the turns ratio of a transformer is 20 and the primary ac voltage is 12 V, the secondary voltage is? A.12 V B.120 V C.240 V D.2,400 V

In a certain loaded transformer, the secondary voltage is one-fourth the primary voltage. The secondary

Description : In a certain loaded transformer, the secondary voltage is one-fourth the primary voltage. The secondary current is? A.one-fourth the primary current B.four times the primary current C.equal to the primary current D.one-fourth the primary current and equal to the primary current

Last Answer : In a certain loaded transformer, the secondary voltage is one-fourth the primary voltage. The secondary current is? A.one-fourth the primary current B.four times the primary current C.equal to the primary current D.one-fourth the primary current and equal to the primary current

In a Y-connected circuit, the magnitude of each line current is?

Description : In a Y-connected circuit, the magnitude of each line current is? A.one-third the phase current B.three times the corresponding phase current C.equal to the corresponding phase current D.zero

Last Answer : In a Y-connected circuit, the magnitude of each line current is? A.one-third the phase current B.three times the corresponding phase current C.equal to the corresponding phase current D.zero

The primary coil of a transformer is connected to a 60 V ac source. The secondary coil is connected to a 330

Description : The primary coil of a transformer is connected to a 60 V ac source. The secondary coil is connected to a 330 ohms load. The turns ratio is 3:1. What is the secondary voltage? A.2 V B.20 V C.180 V D.18 V

Last Answer : The primary coil of a transformer is connected to a 60 V ac source. The secondary coil is connected to a 330 ohms load. The turns ratio is 3:1. What is the secondary voltage? A.2 V B.20 V C.180 V D.18 V

The turns ratio required to match an 80 ohms source to a 320 ohms load is?

Description : The turns ratio required to match an 80 ohms source to a 320 ohms load is? A.80 B.20 C.4 D.2

Last Answer : c

When the pointer of an analog ohmmeter reads close to zero, the resistor being measured is?

Description : When the pointer of an analog ohmmeter reads close to zero, the resistor being measured is? A.overheated B.shorted C.open D.reversed

Last Answer : When the pointer of an analog ohmmeter reads close to zero, the resistor being measured is? A.overheated B.shorted C.open D.reversed

A resistance of 3.3 M ohms is connected across a 500 V source. The resulting current is approximately?

Description : A resistance of 3.3 M ohms is connected across a 500 V source. The resulting current is approximately? A.15.1 μA B.151 μA C.66 mA D.660 mA

Last Answer : A

The formula to find I when the values of V and R are known is?

Description : The formula to find I when the values of V and R are known is? A.I = VR B.I = R/V C.V = IR D.I = V/R

Last Answer : The formula to find I when the values of V and R are known is? A.I = VR B.I = R/V C.V = IR D.I = V/R

When converting 0.16 mA to microamperes, the result is?

Description : When converting 0.16 mA to microamperes, the result is? A.16 μA B.160 μA C.1,600 μA D.0.0016 μA

Last Answer : When converting 0.16 mA to microamperes, the result is? A.16 μA B.160 μA C.1,600 μA D.0.0016 μA

The average value of a 12 V peak sine wave over one complete cycle is?

Description : The average value of a 12 V peak sine wave over one complete cycle is? A.0 V B.1.27 V C.7.64 V D.6.37 V

Last Answer : The average value of a 12 V peak sine wave over one complete cycle is? A.0 V B.1.27 V C.7.64 V D.6.37 V

Two series resistors are connected to an ac source. If there are 7.5 V rms across one resistor

Description : Two series resistors are connected to an ac source. If there are 7.5 V rms across one resistor and 4.2 V rms across the other, the peak source voltage is? A.16.54 V B.1.65 V C.10.60 V D.5.93 V

Last Answer : Two series resistors are connected to an ac source. If there are 7.5 V rms across one resistor and 4.2 V rms across the other, the peak source voltage is? A.16.54 V B.1.65 V C.10.60 V D.5.93 V

A certain transformer has 400 turns in the primary winding and 2,000 turns in the secondary

Description : A certain transformer has 400 turns in the primary winding and 2,000 turns in the secondary winding. The turns ratio is? A.0.2 B.0.4 C.5 D.25

Last Answer : A certain transformer has 400 turns in the primary winding and 2,000 turns in the secondary winding. The turns ratio is? A.0.2 B.0.4 C.5 D.25

If it takes 400 ms to use 12,000 J of energy, the power is?

Description : If it takes 400 ms to use 12,000 J of energy, the power is? A.30 kW B.30 W C.3 W D.300 kW

Last Answer : If it takes 400 ms to use 12,000 J of energy, the power is? A.30 kW B.30 W C.3 W D.300 kW

A material that does not allow current under normal conditions is a(n)?

Description : A material that does not allow current under normal conditions is a(n)? A.insulator B.conductor C.semiconductor D.valence

Last Answer : A material that does not allow current under normal conditions is a(n)? A.insulator B.conductor C.semiconductor D.valence

Current flows in a circuit when?

Description : Current flows in a circuit when? A.a switch is opened B.a switch is closed C.the switch is either open or closed D.there is no voltage

Last Answer : Current flows in a circuit when? A.a switch is opened B.a switch is closed C.the switch is either open or closed D.there is no voltage