Related Questions

If the current gain of the amplifier is X, its voltage gain is Y, then its power gain will be
A $$\frac{{\text{X}}}{{\text{Y}}}$$
B X × Y
C X + Y
D X - Y
A negative gain margin expressed in decibels means a/an __________ system.
A Stable
B Unstable
C Critically damped
D None of these
The power is measured in terms of decibels in case of
A Electronic equipment
B Transformers
C Current transformers
D Auto transformers
Maximum permissible limit of industrial noise as recommended by World Health Organisation (WHO) is __________ decibels.
A 35
B 75
C 95
D 105
The maximum permissible noise level to which a man working in a chemical plant can be exposed for eight hours per day is about __________ decibels.
A 60
B 90
C 105
D 120
Noise level inside a jet air liner in normal flight is about __________ decibels.
A 80
B 100
C 125
D 145
Noise level in a quiet private business office is about __________ decibels.
A 25
B 50
C 70
D 85
Shouting by a man at his full voice corresponds to a voice level of about __________ decibels.
A 25
B 50
C 80
D 120
Noise level heard inside a bus in busy city traffic or inside a sub-way train corresponds to about __________ decibels.
A 75
B 95
C 120
D 140
Conversion formula for converting amplitude ratio (AR) into decibels is
A Decibel = 20 log10 (AR)
B Decibel = 20 loge (AR)
C Decibel = 20 log10 (AR)0.5
D Decibel = 20 loge (AR)0.5

Next steps