Assume a 64Kx8 Memory is designed using 16Kx1 RAM chips. How many address lines must be decoded externally to each 16K RAM chip?

A solar cell fabricated with a p-n junction has an open circuit voltage of 0.6V and a short circuit current of 20mA/cm²when exposed to a solar insolation of 1000 W/m², and has a form factor FF=0.7

1. Draw the current-voltage characteristic of this device, making sure to identify the Voc and Isc, and the point where the maximum power is generated.
2. What is the efficiency of this cell?
3. Suppose you can improve the manufacturing process of the cell so that the carrier life time is increased by 4 times. What will happen to the V_oc and I_sc of the cell? Draw how the current voltage characteristic will change.
4. If the solar insolation of 1000 W/m² is constant for 8 hours per day and then is zero for 16 hours per day what is the capacity factor of this cell? How much electrical energy will it produce in a day?

Photovoltaic (PV) arrays have become very popular in on-grid and off-grid systems due to their simplicity, low emissions and low levelised costs of electricity.

PV arrays are connected to grid systems via power electric converters and typically have embedded maximum power point tracking algorithms.

Describe how a PV system with maximum power point tracking may be modelled in a dynamic simulation package.

(a) DRAW and EXPLAIN the Structure of the BG unit. and  Cascading standard CMOS NAND gate to a BG unit.

(b)TRUTH TABLE OF BG PRECHARGE UNIT, TRUTH TABLE OF BG PREDISCHARGE UNIT

Can anyone provide useful source or information about Doubly Fed Induction generator ? I can able the basic information on the operating principles of DFIG, however, I want more information about the innovations, statistics , just any additional information about DFIG would be appreciated.

A shunt motor has a supply voltage of 200 V and armature resistance of 3.6 Ω. At certain torque the motor run at speed = 1200 R.P.M and take a current of 10 Amp from the supply and its field current is 0.5 Amp. Find starting torque, no-load speed, and the load torque when the current supplied by the supply is 5 Amp.

Speed control of motors (ac motors as well as dc motors) can be accomplished by
using solid-state switching circuitry In one such method, a solid-state relay is activated
using a switching signal generated by a microcomputer so as to turn on and off at high
speed, the power into the motor drive circuit. Speed of the motor can be measured using a
sensor such as tachometer or optical encoder. This signal is read by the microcomputer
and is used to modify the switching signal so as to correct the motor speed. Using a
schematic diagram, describe the hardware needed to implement this control scheme.
Explain the operation of the control system.

The following problems are related to PIC18F46K22 data memory:

(a) What is the data memory space and actual implemented size?

(b) What does direct addressing mean?

(c) What does indirect addressing mean?

(d) What is the Access Bank used for?

(e) What is the address range for Bank 6?

(f) What is the purpose of the registers FSR0, FSR1, FSR2 for?

Which of the following combinations of gates can be used to make a clocked SR flip-flop? Assume NOT gates have one input each, all other gates have two inputs each. (One or more is true. Your answer is considered correct only if all and only the true options are selected.)

A. 4 NAND gates,2 NOR gates

B. 2 AND gates,1 OR gates,1 NAND gates,1 NOR gates

C. 1 NAND gates,4 NOR gates

D. 1 OR gates,4 NAND gates,7 NOR gates

E. None of the above

Design an 8-bit adder. Show the truth table, logic circuit, and Verilog code.

Give an example on industrial application to the BJT with some explanation and draw the circuit diagram for the application which you chose  

Design a bandstop filter with a cutoff frequency of -3dB at W1 = 100 rad/s and W2 = 10,000rad/s. Confirm by plotting the magnitude and phase of the transfer function in matlab.

Design a state Variable Filter that has a corner frequency of 100 KHz and a quality factor (Q) of 20. Assume both the frequency-determining resistors and capacitors are equal.