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1. A belt is wrapped around a pulley creating a torque of 186 N-m. What power is being transmitted if the pulley is rotating at 200 rpm?
2. Knowing that 1 horsepower = 550 ft-lb/sec, what horsepower is required to raise a 100-lb weight to a height of 8 feet in 4 seconds?
3. The 300-kg block is acted upon by a force P, pulling it as shown. P makes an angle of 36o with the horizontal. If the coefficient of sliding friction between the block and the floor is 0.35, determine the force required to start moving the block. Remember:
Weight, W = (mass) X (acceleration due to gravity)
(a) Using superposition, determine the voltage labeled vx in the circuit represented. (b) To what value should the 2 A source be changed to reduce vx by 10% (c) Verify your answers by performing three dc sweeps in PSpice.
Let us assume that a synchronouse 3 phase alternator produces a no-load line voltage of 13.2 KV. if a load having a lagging power factor of 0.8 is connected to the machine, must the excitation be increased or decreased
Consider unsteady diffusion across a membrane of thickness L. Initially, the concentration of solute in the membrane is zero. At time zero, the concentration at x=0 is raised to C0 and the concentration at x=L is maintained at zero.
Consider the 1D system whose input-output equation is given by g(x) = f(x)*f(x), where * denotes convolution. a) Write an integral expression that gives g(x) as a function of f(x). Hint: Convolution definition
A 3 phase 50hz star connected motor has rotor resistance and stand still reactance of 0.025ohm and 0.35 ohm respectively. The full load slip is 5% calculate the resistance per phase of a star connected rheostat
It is given that the energy consumed by a computer system is (100 Joules/sec^2)*t^2 Joules during the first second after being activated at t=0. What is the average power dissipation during this time
You also have frequency doublers, mixers and an oscillator with an adjustable frequency from 13 to 14 MHz. There are also bandpass filters of any specification.A. Draw the block diagram of the system.
The voltage and current at the terminals of the circuit element are zero for t 0 they are v = 90-90e^(-1000t) V i = 50e^(-1000t) mA A) Find the maximum value of the power delivered to the circuit B)
The generator is delivering 48 MW to the bus bar at the rated voltage with its field current adjusted for a generated emf of 46 kV per phase. Determine the armature current and the power factor. State whether power factor is lagging or leading
Compare the by hand solution and the PSPICE simulation for a voltage amplifier which has an input resistance of 10kohms and an output resistance of 100ohms, and a gain of 100V/V. The voltage amplifier is capacitively coupled to a voltage source.
a. Let x[n] and y[n] be periodic signals with fundamental periods N1 and N2, respectively. Under what conditions is the sum x[n] + y[n] periodic If it is periodic, what is the fundamental period of this signal
A BJT is operated in a 50ohm circuit 1.5Ghz. FOr the bias conditions of Collector Current - 4mA and Collector-Emittor Voltage = 10V. The manufacturer provides the S-parameters in magnitude and angles (in degrees) as follows. S11 = 0.7
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