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Temperature measurements are done in a room in five different locations during a week (seven days) once a day. Write a program that first reads the five temperature values measured in the first day. After that the program reads the next five temperature values measured in the second day and so on. When all the measured values are entered the program finds the location where the average temperature during the week (the average value of temperatures during seven days) has been lowest. It is enough to display the location number on the screen (1, 2, 3, 4 or 5).
A 240/40 volt transformer supplies two different secondary loads. One load (a) draws a current of 12 amperes at a lagging power factor of 0.94. The other load (b) draws a current of 12 amperes at a leading power factor of 0.94.
Identify and describe three different ways to manufacture resistors. These variations can be "form factor" or the technique used to establish the resistance. Provide an example of a resistor de-rating curve from a manufacturer
A 3-phase squirrel cage motor has maximum torque equal to twicefull load torque. r2 =0.3 ohms and x2 =3ohms. Determine the ratio of starting torque to full loadtorque, if it is started by (a) Direct on line starter(b) star delta starter
Air is to be compressed from atmospheric pressure at 60oF to 100 psia in a centrfugal compressor (isentropic efficiency about 0.7). The flow rate will be 500 lbm/min. Specify the horsepower required for the driving motor
A young designer, aiming to develop intuition concerning conducting paths within an integrated circuit, examines the end-to-endresistance of a connecting bar 10μm long, 3μm wide, and1μm thick, made of various materials.
Design a parallel resonant circuit so that a variable capacitor can adjust the resonant frequency over the AM broadcast band, 535 to 1605 kHz, with Q
In step four of this problem, how do you know in which direction to simplify the resistance for the thevenin resistance. (since you come up with a different answer depending on which direction you choose to simplify from)
A new 1.5-V AA battery delivers 40 kJ of energy during its life time. How long will the battery last in an application that draws 10 mA continuously. Assume the battery voltage is constant.
A separately excited dc motor turns at 1200rpm when the armature is connected to a 115V source. Calculate the armature voltage required so that the motor runs at 1500rpm.
A one-dimensional infinite potential well with a width of 12 Ao contains an electron. (a) Calculate the first two energy levels that the electron may occupy. (b) If an electron drops from the second energy level to the first, what is the wavelengt..
Draw the equivalent circuit referred to the high-voltage side.
(a) Find the slip at the maximum developed torque. (b) If we would like to get the maximum torque at starting (s=1), a method is to add more resistance to the rotor, R2,new=R2,old + Rextra, while the rotor reactance X2 stays the same.
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