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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?
Compare the frequency response magnitudes for each of the responses above (will need to plot on a logarithmic scale). Comment on the observations noting things such as if the signals are resolvable, the size of the side lobes, etc.
The maximum oven temperature to be maintained by the conventional type of thermostatic control is 290 degrees Celsius, the kitchen temperature may vary from 15 to 33 degrees Celsius, and the average heat transfer coefficient between the oven surfac..
The sun is at an altitude of 30 degrees to the horizontal. What is the corresponding air mass What is the physical significance of air mass Mars has a very thin atmosphere containing primarily CO_2 and dust particles.
A -3.4 nC charge is on the x-axis at x_1 = -8 cm and a 4.6 nC charge is on the x-axis at x_2 = 17 cm. At what point or points on the y-axis is the electric potential zero
Let c(x) = 1 - x2/2! + x4/4! and s(x) = x - x3/3! + x5/5! be approximations to cos(x) and sin(x) respectively. What are the relative and absolute errors in using these formulas for x = -2, -1, 0, 1, 2 degrees
given the narrow audio bandwidth of a telephone transmission facility a nominal snr of 56db 400000 and a distortion
The upper side frequency of an AM signal is 603 KHz. If the carrier frequency is 600 KHz, what is the intelligence frequency
An optical waveguide with gain and cleaved facets result in high reflection of the light wave resulting in oscillations which causes the guide to become a laser. What is the reflection coefficient of the wave in the guide at the cleaved interface
The following calculation was performed by a particular breed of exceptionally intelligent cartoon character. If the radix r used by the character corresponds to its total number of toes, how many toes does the character have on each foot
Assuming that the current through and inductor is i l(t) = 10exp(-t/3). Find at what time this current dropped by 50percent of its initial value.
A car travels at 30 km/hour. The diameter of the tire is 50 cm. Giving consideration to the Nyquist frequency how many shots of the tire must be taken to correctly capture the motion of the wheels
The current in a solenoid is 5amps when it is connected to a 24v battery and 1.2amps when it is connected to a 24v, 60 Hz alternating current power source. Find the resistance and the inductance of the coil.
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