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An electric heater is connected to a constant 240-V source and absorbs 1000 W. Subsequently, this heater is connected to a constant 210-V source.
(a) What is the resistance of the heater?
(b)What power does it absorb from the 210-V source?
A 415V to 11 kV transformer has a rating of 200 kVA. The winding resistance and leakage reactance when referred to the primary are 0.014 and 0.057 ohms respectively.
For a transfer function with a pair of complex zeros located on the j (omega)-axis, what happens to the frequency response as the frequency applied to the system approaches the value at which the zeros are located
If a 250 us period clock signal must be transmitted with a 10 kHz data signal on the same link, then what is the minimum bandwidth necessary to support both signals.
Electrons in silicon carbide have a mobility of 1000 cm^2/V-sec. At what value of the electric field do the electrons reach a velocity of 3 X 10^7 cm/s Assume that the movility is constant and independent of the elctric field.
If the thickness of gate oxide for a MOS transistor is about 100A, about how many SiO2 molecules, on average, are stacked on top of each other to form the gate oxide
Explanation to "Electric circuits" question, The voltage across a load is v(t) = 260 sin (377t + 10 °) and the current through the load is i = 100 sin (377t + 10°). What is the RMS power?
Seawater with a specific weight of 64.0 lbs/ft^3 is at a level of 4 feet above the centerline of the exit pipe. The tank is closed at the top and there is a pressure of 1 psig above the seawater. What is the velocity at the end of the pipe
(a) Impulse Response of a DT LTI system is given by h[n]=(.2^n)u[n] Determine the step response of y[n] of the system for all n. (b) Given h[n]=(a^n)u[n] and x[n]=(.2^n-5)u[n-5] Evaluate y[n]=h[n]*x[n] for
Calculate the percentage of electricity generation by these fuel-cell systems compared to the annual electricity generation in the U.S. of 3.8x109 MW-hrs
What is the maximum value of N0 for an FM cell phone whereby ST=
Use Laplace transform techniques to find the solution to the following differential equation given that x = 1/3 at t = 0.
Parallel plate capacitor. Plates have area of 2x2cm2 and interplate seperation is 1mm. Insulator inside capacitor has dielectric constant εr=4. Voltage across capactior has 10V amplitude.
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