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A walker's cassette tape player uses four AA batteries in series toprovide 6V to the player circuit. The four alkaline battery cellsstore a total of 200 watt-seconds of energy. if the cassette playe
A circle, centered at the origin with a radius of 2 units, lies in the xy plane. Determine the unit vector in rectangular components that lies int he xy plane, is tangent to thte circle at 3.
(a) Using the default power transistors, determine the minimum supply rail voltage required if TJ < 105oC is required. (b) If the supply rail voltage VS = (+-) 12V what is the minimum allowed load
Give two advantages of preheating the water in this way and one disadvantage and give two reasons why the presence of any sulphur in the fuel mix would be undesirable.
The charge that pass through a circuit element is given by q(t) =0.01sin(200t) C, in which the angle is in radians. Find the currentas a function of time.
The charge entering the positive terminal of an element is q(t) =-30e-4t mC. If the voltage across the element is120e-2t V, determine the energy delivered to the elementin the time interval 0 < t
A coil wound on a magnetic core is excited with the followingAC voltage sources: a) 100 volts, 50 Hz, b) 110 volts, 60 Hz.Compare the hysteresis losses and eddy current losses (ratio) forthe two dif
A circle, centered at the origin with a radius of 2 units, lies in the xy plane. Determine the unit vector in rectangular components that lies in the xy plane, is tangent to the circle at (√3,
gear box has ratio 8:1 to the .9-m diameter wheels. ARMATURE HAS SOURCE WHERE THE VOLTAGE CAN BE VARIED FROM 0 TO600--IGNORE ALL LOSSES. A) DETERMINED REQUIRED VALUE OF kφ to give a speedof 12.5
A commutator motor with its armature supplied from variable voltage source. As the voltage is varied from 0 to 600V,the drive speed varies from 0 to 1600rpm, the field flux isconstant, all losses-ig
A permanent magnet commutator motor produces a torque of8 N. m with armature current = 10A. armature R=.16 ohms. if motordrives a load requiring torque of 20 N. m at speed = 1800rpm
Design a passive low-filter using resistors and a 100uF capacitor that will have a passband gain of 0.8 and a cutoff frequency of10000 HZ.
if input variables have more 1's than 0's, a majority function isgenerated in combinational logic circuits with an output equal to1. otherwise the output is equal to 0.design three input majority fu
Assume that you wish to connect an 8[ohm]speaker to an amplifier using an ideal transformer. The amplifier has a Thévenin voltage of 25[Vrms], and aThévenin resistance of 0.275[ohm]. F
build a solar power system that is used for aresidential application and demonstrate in front of my class. Here are the components used in this system: Solar panel,solar charge controller, 12 V lead
What is the election current in a 2 mm diameter copper wire if the electron drift speed is 1 x 10^-4 m/s. express in coloumbs per second and amperes
if maximum frequency audible to a human ear is 20,000 Hz, at what rate must the analog signal from a microphone be sampled when converting it to digital
A complex number with a phase between 90° and 180°(in the 2nd quadrant) is added to a second complexnumber with a phase between -90° and -180° (inthe 3rd quadrant). What is the sign
Calculate the load voltage, the load power, and the efficiency of the transmission system under the following schemes. a. 4:1 transformer at generator b. 4:1 transformer to load c. 1:4 transformer a
The load draws 1.2 pu current at 0.6 puvoltage while drawing 0.5 pu (true) power. If the base volageis 20 kV and the base current is 160 A, calculate the power factor and the ohmic value of the resi
A wattmeter connected to a 240-volt 60 Hz series RL circuitindicates a reading of 691 watts. A clamp-on ammeter used to measure current flow indicates a current of 4.8 A.
Assuming unity power factor, determine the full load currentsin the primary and secondary windings At full load, determine the power losses in the primarysecondary resistances. If the input power to t
a fully loaded 100 hp induction motor operates at 85% efficiencyfrom a 450 v line.if the power factor is 0.65 lagging.what currentdoes that the motor drawn. if the power factor is 0.9 lagginginstead
Many automobiles are equipped with windshield wipers that can operate intermittently during a light rainfall. How does the operation ofsuch wipers depend on the charging and discharging of a capacit
lets suppose there are two capacitors of same capacitance and they are connected separately to there own battries now we joined both the capacitors togathers and are connectd to the battery with wir