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Three series-connected capacitors, C1, C2 and C3, with capacitances 10uF, 15uF and 27uF respectively, are connected in parallel with a 15uF capacitor and a 150V DC source. Calculate: a) Equivalent c
The voltage and current at the terminals of the circuit element are zero for t<0. For t>or =0 they are: v = (16,000t + 20)e^-800t V; i = (128t + 0.16)e^-800t A a) At what instant of time is ma
if a circuit contains 3 automatic switches and we want that, with a probability of 95%, during a given time interval they are all working, what probability of failure per time interval can we admit
A four-pole armature is to generate an average e.m.f. of 2.0V per conducter, the flux per pole being 25mWb. Calculate the speed, in r/min, at which the armature must rotate.
An iron core of cross-sectional area 200 square mm and length 320mm is evenly wound with a coil of 100 turns. When a current of 0.35A flows in the coil, a magnetic flux density of 0.12T is set up in
If the emission, factor of producing electric power by PV cells is 100 g of CO2 per kWh, by wind power is 15 g of CO2 per kWh, and by coal is 1000 g of CO2 per kWh, then find the ratio of CO2 emissi
compute the money saved in one month by using CFL (compact fluorescent light) bulb (18 W) instead of using an incandescent lamp (60 W) if the cost of electricity is $.12 per kWh. Assume lights are u
The steady-state response is due to simple poles in the j axis of the s-plane coming from the input. Suppose the transfer function of the system is: H(s)=Y(s)/X(s)= 1 / (s+1)^2 + 4 a. Find the poles
A resistor on a Wheatstone bridge is replaced with a strain gage which has a nominal resistance of 120 Ohms and a gage factor of 2.06. The remaining resistors on this quarter-bridge Wheatstone bridg
From a high-level perspective, what is the major difference between the LM324 and the LF347. Which of the performance characteristics are significantly different because of this.
A battery E (e.m.f 12v and internal resistance 0.8 ohms) and a resistor R1 (10 ohms) are connected in series across two parallel resistors (R2 = 12 ohms, R3 = 18 ohms). i) Draw the circuit diagram,
if we use CD quality audio, i.e. the same sampling rate and number of bits per sample for each channel, how many binary Giga Byte (GB) storage space do we need for the audio portion of an one and a
What is the advantage of building circuits using only NAND gates instead of the appropriate AND, OR, and NOT gates
Writing the mathematical equations of a DC motor develop the complete model to derive the open loop transfer function between the operating speed and applied voltage.
Discuss the attributes of professional and technical presentations. What are some of the characteristics that may differentiate these types of presentations from others.
Identify how one can generate pulse width modulation using the 9S12DG256 microcontroller. Identify various applications that require PWM. Show how microcontroller PWM interface is used to drive ser
Timing systems play an important role in the generation of timing and measurement within a microcontroller. Identify the type of timer a 9S12DG256 microcontroller possesses.
To discharge a capacitor of 1mF charged with a voltage of 1 volt we connect it, at time t=0, with a resistor of R-ohm. When we measure the voltage in the resistor we find it to be v_R (t)=e^(-t) u(t
1. What parameter of the intelligence signal causes or determines the rate of carrier frequency deviation 2. If you are tuned to an FM station at a frequency of 100.1 MHz, show the bandwidth allocatio
A double-convex lens is to be made of a transparent material with an index of refraction of 1.3. One surface is to have twice the radius of curvature of the other and the focal length is to be 72 mm
When an object is placed 110 cm in front of a spherical refracting surface with a -36 cm radius of curvature, the image distance is +290 cm. If the index of refraction of the surrounding material is
One end of a long glass rod (n = 1.3) is a convex surface of radius 4.9 cm. An object is located in air along the axis of the rod, at a distance of 10 cm from the convex end. (a) How far apart are t
Let's say that an object covers a distance of 3 m in 5 seconds under constant acceleration. Use kinematics equations and Newton's second law to calculate the following: a) the acceleration of the ca
After driving a portion of the route, the tap tap is fully loaded with a total of 24 people including the driver, with an average mass of 70kg per person. In addition, there are three 15kg- goats, f
A 340 V, 6 pole dc Shunt motor has the following parameters: Rating: 35 kW Current: 122 A Speed: 1000 rpmArmature resistance: 0.35 Ohm Sunt field resistance: 150 Ohm Friction&Windage loss: 1.2 kW