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A transformer is made up of a 1200-turn primary coil and an open-circuited 75-turn secondary coil wound around a closed core of cross-sectional area 42 cm2. The core material can be considered to saturate when the rms applied flux density reaches 1.45 T. What maximum 60-Hz rms primary voltage is possible without reaching this saturation level? What is the corresponding secondary voltage? How are these values modified if the applied frequency is lowered to 50 Hz?
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.
What do you believe would happen, if you removed the 220 ohm resistor from the circuit and connected the LED directly to the 555 integrated circuit. Are there any appreciable differences between labeled, calculated.
An unmanned X-43A scramjet test vehicle has achieved a maximum speed of Mach number 9.68 in a test flight over the Pacific Ocean. Mach number is defined as the speed of an object divided by the speed of sound.
A U.S Department of Energy report estimates that over 100billion kWH/year can be saved in the United States by variousenergy conservation techniques applied to the pump-driven systems.
1. design a simple power factor meter to operate from 230v mains. current range=1 to 10 amps. power factor range : 0.4 to 1 2. what is meant by normal mode rejection an A/D converter has 20ms integration time.
Your friends Alice and Bob have two children. You recall that one is a boy. What is the probability that the other is a girl Hint: Think carefully about the sample space.
The armature resistance and series field resistances are 0.06-ohm and 0.04-ohm respectively. If current taken remains same, calculate the series resistance required to reduce the speed to 600 rpm.
design two decoding circuits that eash produces a high output when only four input lines A-D that have a specific value. The first circuit should have high output witha value of 5. and the second will have a 9. The chips i will be usinf is 7400 an..
1use polar coordinates to find the volume of the given solid. below the paraboloid z 36 - 9x2 - 9y2 and above the
basic signals 1.generate and plot using matlabs stem command the sequence xn 0.95n cos?20 n for 0 le n le 63. note
A carrier signal c(t) = 10 cos(2pifct) is modulated using a message signal m(t) cos(20pit). The modulation is FM, with kf = 50.Write equation for modulated signal What is average transmitted power & modulation index
What is the Causes of low Power Factor ? With steps and detaills .
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