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Calculate the voltage output of a dynamic microphone when exposed to soundpressure levels of 70 and 90 dB if the open-circuit sensitivity of the microphone is -37 dB.
question 1. a mild steel bar 40 mm diameter and 100 mm long is subjected to a tensile force along its axis.youngs
a compressor raises the pressure of 3kg of air gamma 1.4 adiabatically from 100kpa 288k to 450kpa. the electric motor
a 60-kg wrecking ball b is attached to a 15-m-long steel cable ab and swings in the vertical arc shown. determine the
The space between two 6 in. long concentric cylinders is filled with glycerin (viscosity = 8.5X10-3 lb s/ft2). The inner cylinder has a radius of 3 in. and the gap width between the cylinders is 0.1 in. Determine the torque AND power required to rota..
Working with boiler suspension bolts. An HRT boiler is 4766mm long and 3533mm in diameter. It has 66 steel tubes with a diameter of 9mm. The total dry weight of the boiler is 2.565 tonnes
air expands from 100kpa 40 degrees c with volume .75 m3 to 15kpa in a polytropic process with polytropic exponent n.
a scale is constructed using the 10-kg mass the 2-kg pan p and the pulley and cord arrangement. cord bca is 2m long. if
What are the outlet air temperature, the heat rate q, and pressure drop tip for these conditions - To illustrate the tradeoff between heat transfer rate and pressure drop considerations, calculate q and tip for diameters in the range from 0.1 to 0...
superheated steam at 120 bar and 520c leaves the steam generator of a vapor power plant and enters a turbine with an
A harmonic force of amplitude 180 N and frequency 3.5 Hz acts on the mass. If the initial displacement and velocity of the mass are 15 mm and 5 m/s, find the complete solution representing the motion of the mass.
1. A reversible power cycle operating between hot and cold reservoirs at 1000 K and 300 K, respectively, receives 100 kJ by heat transfer from the hot reservoir for each cycle of operation. Determine the net work developed in 10 cycles of operatio..
An electric heater heats air. The temperature sensor has a time constant of 5 seconds. The air temperature output (in °C), as measured by the temperature probe is: T=200+cos(0.5t)
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