The decibel is a measure of

Power gain in decibels is equal to voltage gain in decibels only when

An ideal amplifier has

Fidelity represents : S1: Reproduction of signal , S2: Reproduction of phase relation

If the current gain of the amplifier is X, its voltage gain is Y, then its power gain will be

In an amplifier, the coupling capacitors are employed for

The amplifier which has no drift is called as

The amplifier gain varies with frequency. This happens mainly due to

The outstanding characteristics of a D.C. amplifier is its

Isolation amplifier actually operates on the principle of

Isolation amplifiers are also called as

The improper response time of the amplifier in the biomedical recorders

To reduce common mode interference during recording of bio signals one can use

Resistively generated inference arises through incorrect

CMRR is more in

For biomedical applications the mostly used amplifier is

Which amplifier is used to drive the recorder ?

When a number of components are fabricated on same IC chip it is necessary to provide isolation between two different components for input interconnection is called

A chopper amplifier

Power amplifier is provided with
S1: Cross over distortion compensation
S2: Offset control

Pre amplifier isolation in ECG circuit is to

Raising input impedance of pre amplifier reduces

Common mode rejection ratio is defined as ratio of

An electrometer amplifier has high input impedance of

When the input of differential amplifier V1 = 0, then the differential amplifier is said to be operated in