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An 8-pole, 3-phase, 50 Hz induction motor is running at a speed of 710 rpm with an input power of 35 kW. The stator copper-loss at this operating condition is known to be 1200 W while the rotational losses are 600 W. Find
(a) the rotor copper-loss,
(b) the gross torque developed,
(c) the gross mechanical power developed, and
(d) the net torque and mechanical power output.
A p-n junction solar cell has Voc = .5 V and Jsc = 20 mA/cm2. A second cell of same area has Voc = .6V and Jsc = 16 mA/cm2. Assuming both cells obey ideal diode equation find the values of Voc and Jsc when connected in parallel and series
A diode operating at 300K at a forward voltage of 0.4V carriers a current of 10mA. When voltage is changed to 0.42V the current becomes thrice. Calculate the value of reverse leakage current and ? for the diode(assume VT= 26 mV).
Using the Routh Hurwitz method, find the values of k for which the following polynomial has all its roots to the left of s = -1.
A tow truck applies forces F1 and F2 to the bumper of an automobile where F1 is horizontal. Determine the magnitude of F2 that will provide a vertical resultant force, and determine the magnitude of this resultant.
Determine formulas in closed form for the marginal probability distribution function of X for all x, and sketch a graph of this function over the range -1 ≤ x ≤ 2.
How is the effect of frequency-selective fading on basic OFDM signaling and what techniques can one use in OFDM to overcome fading?
Assume that capacitor is completely discharged when t
At a distance of 300 m from an antenna operating at 5.8 GHz, the radiated power density in the main beam is measured to be 7.5 × 10-3 W/m2. If the input power to the antenna is known to be 85 W, find the gain of the antenna.
An industrial heater has a nameplate which reads: 210 V 60 Hz 12 kVA 0.78 pf lagging
Design a device that creates a voltage that is a damped oscillation with a frequency of 5 radians per second and a time constant of 3 seconds. In particular, explain how initial conditions are to be handled.
Design (simulaton, analysis), build and test an op-amp based instrumentation amplifier with the following specifications: (a) Have very high input resistance (minimum is 1 Mega Ohm). (b) Have very high voltage gain (minimum 1000V)
Compute the basic checksum, the 1's complement checksum, and the 2's complement checksum for each of the following groups of 8-bit data elements using both the basic calculation of the datasum and the one's complement datasum.
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