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A motor is tripping out on overload. The motor nameplate reveals a full-load current of 168 amperes. When the motor is operating under load, an ammeter indicates the following: phase 1 = 166 amperes, phase 2 = 164 amperes, and phase 3 = 225 amperes. What is the most likely problem with this motor?
A designer wants to represent all decimal numbers from 0 to 33. How many bits are needed? What are the binary representations for 0, 7, IS, 31 and 33? What is the largest value that can be represented?
Calculate the parameters RE and XE, and the maximum efficiency and power output for the transformer when a load with a 90% lagging power factor is connected to the transformer secondary winding.
Two thin rods of length L lie on the x axis. One of them has a charge of -Q uniformly distributed along its length and is positioned between x = -L and x = 0. The other one has a charge of +Q uniformly distributed along its length.
By how much does the transmit power of a cellular telephone have to be increased if its range is to be increased by 10 times?
Write the expression for the differential length vector dl at the point (1, 2, 8) on the straight line and having the projection dx on the x-axis.
Consider the general system from Fig. 10.3. Make reasonable assumptions regarding the efficiency of each unit and then determine the efficiency of the overall system.
A transmitter transmits an AM sinal with a carrier frequncy of 1530kHz. When an inexpensive radio receiver (which has a poor selectivity in its RF-stage bandpass filter) is tuned to 1530kHz, the signal is heard loud and clear.
A magnetic field of 2.0 T is applied to a bubble chamber to make the tracks of protons and other charged particles identifiable by the radius of the circles they move in. If a high-energy proton moves along an arc of a 3.3 cm circle
The NF (dB) is defined as 10log(SNRin/SNRout) - in the unit of dB. If we are given the values of SNRin and SNRout in dB unit, how do we calculate NF (dB) in terms of dB, and how do we calculate NF in term of a pure ratio
What is the advantage of using a double-break contact instead of a single-break contact?
Explain pseudo code for some of consecutive prime is a prime number and print such number given in range.
Identify the intervals of interest for performing the convolution {x[n]*h[n]} on the following LTI system. This experiment requires that you write the summations for each interval of interest, but does not required you to simplify the summations.
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