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A 7200-240V, 60 Hz transformer is connected for step up operation, and a 144<46degrees -Ω load is connected to the secondary. Assume the transformer is ideal and the input voltage is 220 V at 60Hz. Determine (a)secondary voltage; (b)secondary current; (c)primary current; (d)input impedance at primary terminals of transformer; (e)active, reactive, and apparent power input to transformer.
A Si sample is doped with 10^17 As atoms/cm^3. What is the equilibrium hole concentration P0 at T=300K?
Design a common collector circuit using a npn silicon transistor having Beta=90 with Vcc=20 V The desired Q-point is Vce=14V and Ie=2mA
Write a 68000 assembly program to calculate the closest integer cubic root of a 16-bit signed number, saved in memory at a location labeled "NMBR". Obligatory Note: Use the subroutine concept in your solution
The charge leaving the positive reference terminal of a voltage source is q(t)= [6sin120pi*t - 8cos120pi*t]mC the voltage source value is v(t)= 160cos120pi*t V. A) Determine the power supplied by the voltage source at t=0
The common crystal used in older color teleisions outputs a 3.58002 MHz signal. What is the MOD number required for a counter to reduce this to a 60Hz output
A 1 lb weight is suspended from a 0.005 in diameter wire. The unstrained resistance of the wire, R0, is 270 ohm, and its unstrained length is L0=36 in. The wire's gauge factor is 3.2. a. Calculate the psi tensile stress on the loaded wire.
A newly planted tree is supported against the wind by a rope tied to a stake in the ground. The force of the wind, though distributed over the tree, is equivalent to a single force F. Find the tension in the rope
The isotope's half-life is 5 days. The average energy of the beta particles is 0.35 MeV with an RBE of 1.5. Ninety percent of the beta particles are absorbed within the patient's body and 10% escape. What total dose (in mSv) does the patient recei..
A piston-cylinder device initially contains 1 m of nitrogen gas at 400kpa and 27 c. A resistance heater is turned on inside the cylinder which passes 70 kj of electricity to the nitrogen gas.
smoke detector was loaded with 0.2u Curie when purchased 20 years ago. The isotope is Am-241with a half-life of 426 years. How much remains today
Determine a suitable sampling frequency. Design a notch filter to remove the 50Hz component, paying particular attention to any assumptions you have made in the design.
The DC machine rotates at 1500 RPM and it delivers rated current at rated terminal voltage. The field winding is connected to a 120 V supply. Find the value of the field current and the value of R (field control resistance) required.
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