Related Questions

A's office is 4 km due east of B's office . C's office is 6 km due north of B's office and 4 km due east of D's office. What is the straight-line distance, in km, from A's office to D's?
A 4
B 5
C 8
D 10
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
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 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
Maximum permissible limit of industrial noise as recommended by World Health Organisation (WHO) is __________ decibels.
A 35
B 75
C 95
D 105
Rehana leaves her home early in the morning so that she can reach her office on time. If she walks at the rate of 7 km/hr, then she reaches her office 8 minutes late. But, if she walks at a speed of 8 km/hr, then she reaches her office 4 minutes early. What is the distance in km between Rehana's house and her office?
A 10.5
B 11.2
C 11.5
D 12.2
Shouting by a man at his full voice corresponds to a voice level of about __________ decibels.
A 25
B 50
C 80
D 120
A negative gain margin expressed in decibels means a/an __________ system.
A Stable
B Unstable
C Critically damped
D None of these
Two friends M and N have 40% and 60% shares in a business. After some time a third friend joined the business by investing Tk 5 Lac and acquired 20% shares in the business. What is the share of M in the business now ?
A 20%
B 24%
C 28%
D 32%

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