Present the single-phase equivalent circuit of a synchronous generator.

For this question, you are a construction partner in a managing firm in Kuala Lumpar. The skyscraper you are working in has 12 air conditioners that use 30 amps and operate 33% during the year. You will be installing 3 new, compatible air conditioners that are the same size for identical installation spaces in each unit. Each new unit will use 25 amps operating 40% during the year. If both units function at 135 volts each, what will the difference in 30-day energy cost be if the price for electricity is $0.15kWhr from the mandate?

Source Problem:

Design a grounded-load v-I converter that converts a 0V to 10V input to a 4mA to 20mA output. The circuit is to be powered from +/-15V regulated supplies.

My Question:

What does it mean by a grounded-load? I am not really familiar with this term.

Can you explain the main technical considerations necessary when installing generation within the distribution network?

Explain why short-circuit fault level is generally specified in MVA and not in Amperes?

6) What are the minimum expected values of starting torque, pull up torque and breakdown torque for a 60 Hz, eight pole, 100 HP, NEMA A design B induction motor which runs at 870 RPM when operating at rated load?

A 20 ohm resistive element, a coil of L = 100 millihennries and a capacitor of 5 uF capacitance are connected in series to form an RLC branch.

A voltage v(t) = 7*311.12*sine(377t) volts is applied to the RLC branch.

It is requested:

1. The numerical value of Z_RLC
2. Write the expression for i(t), using numerical coefficients.
3. Write the expression for p (t), using numerical coefficients, and express all trigonometric functions with exponents not greater than unity.
4. The average value of the power delivered to the branch.
5. Find and graph v_R(t), v_L(t), v_C(t), i(t) y p(t).

find zero state response y[n+4]-y[n]=x[n], if x[n]= e^-n u[n]

A series RC circuit with R = 5 W and C = 0.02 F is connected with a battery of E = 100 V. At t = 0, the voltage across the capacitor is zero.

(a) Obtain the subsequent voltage across the capacitor.

(b) As t → ∞, find the charge in the capacitor.

(DIFFERENTIAL EQUATIONS)

SOLVE THIS USING MATLAB SOLVE THIS USING MATLAB

SOLVE THIS USING MATLAB SOLVE THIS USING MATLAB

SOLVE THIS USING MATLAB SOLVE THIS USING MATLAB

SOLVE THIS USING MATLAB SOLVE THIS USING MATLAB

What is the working principle behind using dual resonator for impedance bandwidth?


Reference : Low-Profile, Low-Cost, Broadband Millimeter-Wave Antenna Array for High-Data-Rate WPAN Systems Byungje Lee and Yonghyun Yoon

4. The heart of the original Apple iPad is the Apple A4 chip which operates at 1.0 GHz and is believed to utilize ARM Cortex-A8 CPUs built with Samsung 45nm technology. Assume it dissipates 5 watts using a 1.1 V power supply.

a) If a prototype made in 65 nm is available, what speed and power consumption will the chip likely have assuming constant-field scaling?

b) If the supply voltage on the 65 nm part were scaled to 0.7 V, what will the power consumption and speed be then?

c) i) What supply voltage should be used by the 45 nm part to set the power consumption of 2.5 Watts?

ii) At what speed would the processor then operate?

Introduction:

Clearly define the assigned robotic arm and research on its developer, history and applications.

Show an image of the actual robotic arm and annotate the image by labeling all joints.

(Typed answer only 250 -400 word)

create simple cheat sheet dealing with op-amp circuits. fundamentals and explanation

1.Draw and label a typical generator capability curve, showing the Rotor Current limit, stator current limit and the origin of the Rotor Current circle. Also include the prime mover limit.
2. Write down and explain the important formula and relevant current, voltage and Power limit. Show the correct axes of the curve. Indicate the safe operating point for the generator on the curve.

Ch 26

32. A power pack charging a cell phone battery has an output of 0.4 A at 5.2 V, both rms. If the power pack is plugged into a 120 V wall socket, what is the rms current? 17.3 mA

33. A neon sign transformer has a 450 Watt AC output with an rms voltage of 15kV when connected to a normal household outlet. There are 500 turns of wire in the primary cell.

a) How many turns of wire are in the secondary coil? 62,500 turns

b) When the transformer is running full power. What is the current in the secondary coil? 30 mA

c) When the transformer is running full power. What is the current in the primary coil? 3.75 A

34. A generator produces 250 kW of electric power at 7.2 kV. The current is transmitted to a remote location through wires with a total resistance of 15 W.

a) What is the power loss due to the resistance in the wires? 18 kW

b) What is the power loss if the voltage increased to 30 kV? 1 kW

35. A 20 µF capacitor is connected across an AC generator that produces a peak voltage 6 Volts. The peak current is 0.2 A. What is the oscillation frequency in Hz? 265 Hz

36. A 500 µH inductor is connected across an AC generator that produces a 3.5 V rms Voltage. What is the frequency if the peak current is 50 mA? 31.5 kHz

37. An FM radio station broadcasts at a frequency of 103.5 MHz. What inductance should be paired with a 10 pF capacitor to build a receiver circuit for this station? 236 nH