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A 480-V, 60-Hz, three-phase power system, two- wattmeter method is used for power measurement. The two wattmeters read 111 KW and 58 kW, respectively. Calculate the approximate power output in HP, losses and the corresponding power factor of the induction motor. There is an ammeter connected in the line "b". Predict the ammeter reading. Calculate the reactive power and the apparent power input to the motor. Draw the power triangle. You want to imrove the power factor to the motor load to unity. Calculate the reactive power compensation required. Draw the circuit diagram of the experiment showing all the relevant meters. name the various losses in the induction motor.
One step in decoding a simple code without knowing the coding scheme , involves counting the number of occurrences of each character. Then, knowing that the most common letter in English is "e" the letter that occurs most commonly
A parallel circuit consists of a source and 15 ohm and 30 ohm resistors. The resistor of 15ohm draws a current of 8A. a) Find the current out of the current source. b) Find the current through the 30 ohm resistor.
A class C amplifier severely distorts the signal. How can we use a resonant tuned filter to get the desired signal at the output What type of transistor (BJT or FET) would you like to use at the front end (first amplifier) of a receiver
Consider the current it takes to power a +5V 74xx245(Icc). What is the qualitative difference between the CMOS devices and the non-CMOS devices and the non-CMOS devices What is the explanation for the difference
Write a program to create an array initialized with Hex digits in the ROM space. The main code should copy this array to a different array in the RAM space.
A sirloin steak (e'r = 52.4, µr = 1, tan dc = 0.33) is to be heated in a microwave oven operating at 2.45 Ghz. (a) Determine the uniform plane wave penetration depth. (b) Determine the complex impedance of the material.
Design of sync counter 0010 to 1101 using JK flip flops, Design a synchronous counter using J-K flip-flops that will count from 0010 to 1101 repetitively.
A certain battery has terminals labeled a and b. The battery voltage is vab = 12 V. a) To increase the chemical energy stored in the battery by 600J, how much charge must move through the battery
determine the current through the capacitor, i_c(t) for time t greater than or equal to zero if the following statements apply. 1. Vc(t=0) = 5V 2. The switch is closed from t = - infinity to t = 0.2 seconds, when it opens.
An amplifier has a gain Ad,dB = 40 dB. Its common-mode rejection ratio is CMRRdB= 120 dB. It is used to amplify an input which has a 200mV desired signal along with an undesired common-mode signal ("noise").
Design a mod-6 UP/DOWN counter: A) Using JK flip-flops and the state equation method. (Show the state diagram, state table, state equations, flip-flop input equations, and the logic diagram.)
What is the motor efficiency as operated?
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