Find the overall unweighted and a-weighted sound pressures

Assignment Help Mechanical Engineering

Reference no: EM13711492

White noise has a constant level when measured in frequency bands of constant width. Suppose a noise generator produces white noise over the octave bands 0.5,1,2,4,8 khz. Find the overall unweighted and a-weighted sound pressures if a sound pressure level of 90 dB is measured in the 4kHz octave band.

Reference no: EM13711492

Questions Cloud

What is the rotational speed of the driven sheave : A v-belt drive system consists of a 12.4" diameter driving sheave and a 21.1" diameter driven sheave connected by a 5V belt. if the center distance is to be no more than 38" specify the longest possible standard belt that can be used and what the res..

Find the elevation of the pump relative to the reservoir : A fire truck draws water from an open constant-level reservoir through a hose of 0.2 ft2 cross section. The water is discharged from the pump through another 0.2 ft2 hose to a surge tank pressurized to 120 psig with air at the top. The pump adds 970 ..

Determine the change in the head loss of the fluid : Consider laminar flow of a fluid through a square channel with smooth surfaces. Now the average velocity of the fluid is doubled. Determine the change in the head loss of the fluid. Assume the flow regime remains unchanged.

Determine the heat transfer involved in this process : A closed rigid tank is filled with refrigerant 134a, initially at 10C a quality of 80% and a volume of 0.01m^3. A 12volt battery provides a 5amp current to the resistor for 5 minutes. If the final temperature of the refrigerant is 40C, a) determine t..

Find the overall unweighted and a-weighted sound pressures : White noise has a constant level when measured in frequency bands of constant width. Suppose a noise generator produces white noise over the octave bands 0.5,1,2,4,8 khz. Find the overall unweighted and a-weighted sound pressures if a sound pressure ..

Consider laminar flow of a fluid through a square channel : Consider laminar flow of a fluid through a square channel with smooth surfaces. Now the average velocity of the fluid is doubled. Determine the change in the head loss of the fluid. Assume the flow regime remains unchanged.

Find the angular acceleration of the tiller in the position : The mechanism shown in the figure has been employed as a marine steering linkage called a Raphson's slide. O2B represents the tiller and AC is the actuating rod that is pinned to the slider (link 3) which slides along the tiller. If the absolute velo..

Determine the factor of safety against static failure : A work platform is elevated on the end of a boom that has the ability to extend its length and vary its angle with respect to the ground. The platform width is large compared to the boom diameter so that it is possible to load the boom eccentrically ..

Find the magnitude of reactions at a and the tension in rope : A block is L = 1 [m] long and h = 0.5 [m] tall and weighs 50 [N]. The box is allowed to rotate about point A. A rope is attached to the upper left corner. This rope makes a Î¸=40Â° angle from the horizon. A horizontal force of 30 [N] is applied at th..

User Account

All Pages