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ACTIVE filter ELIMINATE bulky components. It OFFERS GAIN. It can drive low impedance loads. It is easy to TUNE

Active filter eliminate bulky components. It offers gain. It can drive low impedance loads. It is easy to tune

The UNIT is DECIBEL and NEPER.

The unit is decibel and neper.

It is a PART of a network which LIES between two JUNCTION POINTS.

It is a part of a network which lies between two junction points.

The EXAMPLES of VOLTAGE SOURCE are BATTERY and GENERATOR.

The examples of voltage source are battery and generator.

The UNITS are COULOMB and AMPERE.

The units are coulomb and ampere.

The NORTON EQUIVALENT circuit is a CURRENT generator which is placed in parallel to INTERNAL resistance.

The Norton equivalent circuit is a current generator which is placed in parallel to internal resistance.

It is the ABILITY to store electric charge WITHIN it. Capacitance is a measure of charge per unit voltage that can be STORED in an ELEMENT.

It is the ability to store electric charge within it. Capacitance is a measure of charge per unit voltage that can be stored in an element.

When STRENGTH of voltage or current changes in the SOURCE for any CHANGE in the CONNECTED NETWORK they are called dependent sources.

When strength of voltage or current changes in the source for any change in the connected network they are called dependent sources.

The current through any conductor is directly PROPORTIONAL to the APPLIED potential difference ACROSS it KEEPING physical condition unchanged.

The current through any conductor is directly proportional to the applied potential difference across it keeping physical condition unchanged.

No, it is APPLICABLE to DC circuits with and WITHOUT controlled sources.

No, it is applicable to dc circuits with and without controlled sources.

The MATERIAL used is marble because it is unaffected by ATMOSPHERIC conditions.

The material used is marble because it is unaffected by atmospheric conditions.

The VOLTAGE ACROSS INDUCTOR is ZERO.

The voltage across inductor is zero.

The FREQUENCY that SEPARATES the pass and attenuation BAND is KNOWN as cut-off frequency.

The frequency that separates the pass and attenuation band is known as cut-off frequency.

An IDEAL filter would transmit signals under the pass-BAND frequencies without ATTENUATION and COMPLETELY suppress the signal with attenuation band of frequencies with a sharp cut-off profile.

An ideal filter would transmit signals under the pass-band frequencies without attenuation and completely suppress the signal with attenuation band of frequencies with a sharp cut-off profile.

• ACTIVE NETWORK: The network which has no current or VOLTAGE source is called passive network.
• Passive network: The network which either has current or voltage source is called active network.

This THEOREM states that any linear network with output terminal AB can be replaced by a SINGLE VOLTAGE SOURCE V in SERIES with a single impedance.

This theorem states that any linear network with output terminal AB can be replaced by a single voltage source V in series with a single impedance.

The PROPERTIES are HIGH RESISTIVITY, resistance to oxidation, corrosion and MOISTURE.

The properties are high resistivity, resistance to oxidation, corrosion and moisture.

It is the property of a material by virtue of which it opposes any CHANGE of magnitude and direction of CURRENT PASSING through the conductor.

It is the property of a material by virtue of which it opposes any change of magnitude and direction of current passing through the conductor.

The Filter is used in voice frequency TELEGRAPHY, MULTI CHANNEL COMMUNICATION, TV broadcasting and telephony.

The Filter is used in voice frequency telegraphy, multi channel communication, TV broadcasting and telephony.

The CIRCUIT whose PROPERTIES are not same in EITHER DIRECTION is known as unilateral circuit.

The circuit whose properties are not same in either direction is known as unilateral circuit.

If a NUMBER of voltages or current sources are acting simultaneously in a linear NETWORK the resultant current in any branch is the ALGEBRAIC sum of current that would be produced in it when each source acts alone replacing all other independent sources by their INTERNAL resistances.

If a number of voltages or current sources are acting simultaneously in a linear network the resultant current in any branch is the algebraic sum of current that would be produced in it when each source acts alone replacing all other independent sources by their internal resistances.

All independent VOLTAGE SOURCES are short CIRCUITED and all independent current sources are open circuited.

All independent voltage sources are short circuited and all independent current sources are open circuited.

The ALGEBRAIC SUM of currents at any node of a CIRCUIT is ZERO. The sum of incoming current is equal to sum of outgoing current.

The algebraic sum of currents at any node of a circuit is zero. The sum of incoming current is equal to sum of outgoing current.

It is USED when RESISTANCE is LESS than 1 OHM.

It is used when resistance is less than 1 ohm.

The materials used are:

MANGANIN (alloy of COPPER, manganese and nickel. Copper86%, Manganese 12%, and Nickel 2%) CONSTANTAN (alloy of nickel and copper. Copper 55% and Nickel 45%).

The materials used are:

Manganin (alloy of copper, manganese and nickel. Copper86%, Manganese 12%, and Nickel 2%) Constantan (alloy of nickel and copper. Copper 55% and Nickel 45%).

The attenuation does not INCREASE rapidly beyond cut-off frequency. CHARACTERISTICS impedance VARIES widely in the pass band from DESIRED VALUE.

The attenuation does not increase rapidly beyond cut-off frequency. Characteristics impedance varies widely in the pass band from desired value.

The characteristics IMPEDANCE of a FILTER MATCHES with circuit to which it is connected throughout the PASS band.

The characteristics impedance of a filter matches with circuit to which it is connected throughout the pass band.

A resistance LOAD being CONNECTED to a DC network receives maximum power when load resistance is equal to INTERNAL resistance.

A resistance load being connected to a dc network receives maximum power when load resistance is equal to internal resistance.

It FAILS in DISTRIBUTED PARAMETER NETWORK.

It fails in distributed parameter network.

Kirchhoff’s voltage law states that the algebraic SUM of all branch voltages around any closed loop of a NETWORK is ZERO at all instant of time.

Kirchhoff’s voltage law states that the algebraic sum of all branch voltages around any closed loop of a network is zero at all instant of time.

The vacuum and gas filled CAPACITOR are used for high voltage and FREQUENCY APPLICATIONS.

The vacuum and gas filled capacitor are used for high voltage and frequency applications.

The VOLTAGE is CONSTANT.

The voltage is constant.

The RESISTANCE is the PROPERTY of a material to oppose the FLOW of CURRENT in a material. Its unit is ohm.

The resistance is the property of a material to oppose the flow of current in a material. Its unit is ohm.

This filter is a COMBINATION of two parallel tuned CIRCUITS. This is a SPECIAL type of LC filter ALONG with a particular BW frequency to be allowed through it.

This filter is a combination of two parallel tuned circuits. This is a special type of LC filter along with a particular BW frequency to be allowed through it.

The ACTIVE filter contains components LIKE operational amplifier that introduce some gain in the SIGNAL.

The active filter contains components like operational amplifier that introduce some gain in the signal.

EFFICIENCY during MAXIMUM POWER TRANSFER 50%.

Efficiency during maximum power transfer 50%.

This theorem STATES that any linear BILATERAL network with active network with output terminals AB can be REPLACED by a single current SOURCE in parallel with a single impedance Z.

This theorem states that any linear bilateral network with active network with output terminals AB can be replaced by a single current source in parallel with a single impedance Z.

SEMICONDUCTOR DEVICES LIKE transistor and diode are treated as current SOURCES.

Semiconductor devices like transistor and diode are treated as current sources.

The Q factor is ratio of INDUCTIVE REACTANCE to resistance of a COIL.

The Q factor is ratio of inductive reactance to resistance of a coil.