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A large reel of paper installed at the end of a paper machinehas a diameter of 1.8m, a length of 5.6m and a moment of inertia of4500 kg-m2. It is driven by a directly coupled,variable-speed DC motor turning at 120 rpm. The paper is kept undera constant tension of 6000 N.(a) Calculate the power (in hp) required from the motor toturn the reel at 120 rpm.(b) If the speed has to be raised from 120 rpm to 160 rpm in 5seconds, calculate the torque that the motor must develop duringthis interval.(c) Calculate the required motor power after it has reached160 rpm.
The gauge pressure on an air tank is measured to be 250 kPa at the surface of the water. Take the atmospheric pressure to be 100 kPa. The density of water is 997 kg/m3. a) What is the absolute pressure in the tank at the surface
A 10μF capacitor is charged by a constant current source and it's voltage is increased to 2V in 5s. Find the value of the constant current source.
From the definition of polarization (p) Perrin equation, and anisstropy (r) introduced by Jablonski, derive the interchangeable relation between p and r.
Why is quality a difficult term to define. how can we improve our understanding of quality?
Create a program using AsmIDE, which utilizes the Fox 11 68HC11 microcontroller board: Speech timer where max time is 5 minutes Use the switches for:
If I want to stream audio data over a digital data link how much channel capacity is required for stereo 16 bit audio sampled at 44kHz. How does this rate compare to common rates for MP3 formatted audio files.
Explanation to "Electric circuits" question, The voltage across a load is v(t) = 260 sin (377t + 10 °) and the current through the load is i = 100 sin (377t + 10°). What is the RMS power?
a potential divider has formed from 1000 ohms variable resistance. the intention is to drop 12 volts from an automobile battery to 9 volts. When the radio device was attached the voltage drops 6.1 volts.
If vid is 20-mV peak-to-peak sine wave applied in a balanced manner but superimposed on VCM = 0.5 V, what is the value that VDD must have to ensure saturation-mode operation for Q1 and Q2 at all times. Assume Vt = 0.5 V.
An amplifier provides 10.5 V output under unloaded condition. When a load of 10-ohm is connected at its output, the voltage drops down to 0.5 V. Find out the output resistance of the buffer that is to be put between the amplifier
Maximum Likelihood to get the above parameters i.e. u0 and var. Now from these 999 points, I take one point out (lets call it i) and add a new point (lets call it j). What will the new mean and variance be?
On a certain aircraft, the main control circuit on an autopilot fails with probability p. A redundant backup circuit fails independently with probability q. The aircraft can fly if at least one of the circuits is functioning.
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