Related Questions

Power gain in decibels is equal to voltage gain in decibels only when
A Input impedance is equal to output impedance
B Output impedance is zero
C Never
D Input impedance is zero
Overmodulation (amplitude) occurs when signal amplitude is ___________ carrier amplitude
A Equal to
B Greater than
C Less than
D None of the above
What is the ratio of output amplitude to input amplitude for a sinusoidal forcing function in a first order system?
A 1
B >1
C None of these
Pick out the wrong conversion formula for the conversion of weight units :
A 1 tonne = 1000 kg = 22.046 lbs
B 1 U.S. ton = 907 kg = 0.907 tonne = 0.893 ton
C 1 ton = 2240 lbs = 1016 kg = 1.016 tonnes = 1.12 U.S. tons
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

Next steps