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Three similar coils,connected in star, take a total power of 1.5 kw at a p.f 0.2 lagging from a 3-phase, 400v, 50Hz supply.
calculate the resistance and inductance of the each coil.
The circuit elements have parameter values L1= 1H, L2=1H, C = 1F, and R = 2.5+(0.5x0.244) ohms. The resistor value is then between 2.5 and 2.9995 ohms. Using Kirchhoff's voltage and currents laws, derive the 3thorder differential equation for vo(t)..
The number of cell phones recycled or refurbished instead of being sent to landfills is increasing by about 30% per year since 2004. In 2008, 5.5 million cell phones were recycled or refurbished. (a) Find an exponential model for the situation desc..
Prove that the potential cannot have a minimum in an uncharged region of space. Prove therefore that a point charge cannot be in stable equilibrium under the action of electrostatic forces in an uncharged region.
How do the calculated values compare to the measured values? How would you go about calculating the transformer power efficiency? How would you go about measuring the transformer power efficiency?
Snicker's had determined that their target consumers are 15 to 29 year old men. 40% of all SuperBowl Viewers were 15 to 29 year old men. What was the TARGET CPM (TCPM) for Snickers ads during the 2016 SuperBowl?
Two transistors, fabricated with the same technology but having different junction areas, when operated at a base-emitter voltage of 0.72 V, have collector currents of 0.2 mA and 12 mA. Find Is for each device.
An analog voice signal that can vary over the range 0.50 mA is digitized by sampling it at 8 kHz. The first four sample values are 10, 21, 36, and 16 mA. Write the corresponding digital signal (a string of 1 and 0 bits) by using a 4-bit representa..
A 110 V rms, 60 Hz source is applied to a load impedance Z. The apparent power entering the load is 120 VA at a lagging power factor of 0.707. Calculate the reactive power in the load.
1. write a short technical report on one of the subsequent digital communication techniques-a. frequency division
After the numbers have been placed in A and B, and X is set to 0 or 1, a start signal (st) arrives thats sets the circuit in operation. After four shift pulses, the operation is completed and the circuit automatically shuts itself off.
Discuss different applications that could use non-inverting and inverting amplifier circuits. Will the actual op Amp characteristics cause any challenges it used for each application.
Assume the ASCII code is used for each character with an additional parity bit (in the most significant bit position, at left) Each character in ASCII is using 8 bits. a) What english word is coded by the following Hexadecimal sequence
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