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A mine consists of a single stoping section located at a depth of 2200 m accessed by a shaft. If 10 rock drills are in the stoping section that is located a total distance of 1500m from the shaft bottom determine the pressure and quantity requirements required of a compressor at surface to service the requirements of these rock drills.
The average atmospheric pressure at the surface is 100 kPa and a steel pipe conveys the compressed air. There is no receiver in the system, thus assume the drills are working continuously. Hint to answer this you will need to undertake a pipe system design. At a depth of 2200m, the average air temperature is 26°C and atmospheric pressure is 105kPa.
Consider the casual LTI system where the output relates to the input by the following differential equation: dy(t)/dt + 2y(t) = x(t) a) Determine the frequency response H(jw).
Wanting to make optimal use of this shared resource, you make some measurements to determine how many cores your simulation can effectively use. You find that one run of your program takes 36 hours to run on 2 cores and 15 hours to run on 8 cores.
What is the advantage of building circuits using only NAND gates instead of the appropriate AND, OR, and NOT gates
The binary-coded-decimal (BCD) format uses 4 bits to represent 10 decimal digits. For example, 259 in base 10 is repesented as "010 0101 101" in BCD format. A BCD incrementor adds 1 to a number in BCD format.
Then find the phase relation between the total voltage and current; is it leading or lagging when the frequency is below resonance and above resonance; what is the nature of the circuit in those two regions(capacitive or inductive).
Assume that the largest decoder that can be used in an m x1RAM chip has 14 address inputs and that coincident decoding isemployed. In order to construct RAM chips that contain more one-bitwords than m, multiple RAM cell arrays
The air density is 1.23 kg/m^3. If the rolling frictional force is determined to be 47,500 N and the power required to sustain the current velocity is 4.681 MW, determine the approximate drag coefficient of the train
A specific type of MOSFET has VT = -1 V. The MOSFET is in the ON state (a short exists between its drain and source) when vGS ≥ VT. The MOSFET is in the OFF state (an open circuit exists between its drain and source) when vGS
An adiabatic piston cylinder contains 1 kg of R-134a. Initially the conditions inside the piston are 200 kPa and 0 degrees C. An electric heater inside the device runs with constant voltage of 110 V and a constant 0.1A of current for one hour
Determine the capacitance as a function of Ri and Ro. If the dielectric is polystyrene of relative permittivity, εr = 2.6, calculate the capacitance of an isolated conducting sphere of a radius 0.4cm(i.e., Ri=0.4cm and Ro goes to infinity).
20 s20 signals, each of bandwidth 5 kHz and peak-to-peak range of 4 V, are sampled at their Nyquist rates, quantized uniformly, encoded using PCM, multiplexed in time domain. The multiplexed stream has the rate of 2 Mbps.
A large reel of paper installed at the end of a paper machine. d1 = 2m, J = 1000kgm^2, n1 = 60rpm, Tension on Paper = 1000N. Calculate: a. Motor power when the reel turns at 60rpm. b. Torque to increase speed to 120 rpm in 10 seconds
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