1. What is needed for providing an inductor at the output of a SMPS? List out the important requirements of the inductor at the output of a SMPS power supply.

2. Analogue PWM wave form can be created by combining which of the following:

- A saw- tooth waveform and a square wave form
- A saw- tooth waveform and a sinusoidal wave form
- A saw- tooth waveform and a rectangular wave form
- A sinusoidal wave form and a rectangular wave form
- A sinusoidal wave form and a square wave form

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why is the term nonperiodic energy signal redundent

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PROBLEM 2

(a) Do operation 75.38 - 18.62 in binary using two's
complement. Use for the 6 bit fractional part

(b) Convert the resulting expression to decimal, and say how
much is the absolute error obtained in the operation

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Flip-flops:

a) Make a asyncronous MOD 12 flip-flop up counter circuit

b) Make a syncronous MOD 14 flip-flop up counter circuit

c) Each flip-flop has the same propagation delay, which is 10ms.
Calculate the maximum clock frequency of the circuit in questions
(a) and (b)

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Please answer both the questions.

1 a) Design two bits comparators using Verilog description language

Note: Design means RTL code and Testbench covering all possible corner cases)

b)

How many latches will result when the following code is synthesized? Assume B is 4-bits long.

always@(state)

begin

case(state)

2’b00: B = 5;

2’b01: B = 3;

2’b10: B = 0;

endcase

end

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explain which method is the best Newton-Rhapson or Fast-Decoupled Method in

1) Total time needed for each method to converged

2) Accuracy of the solutions found

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The voltage across a 5 μF capacitor is known to be vc=500te^(−2500t) V for t≥0, where t is in seconds.

a.) Find the current through the capacitor for t>0. Assume the passive sign convention.

b.) Find the power at the terminals of the capacitor when t = 150 μs.

c.) Is the capacitor absorbing or delivering power at t = 150 μs?

d.) Find the energy stored in the capacitor at t = 150 μs.

e.) Find the maximum energy stored in the capacitor.

f.) Find the time when the maximum energy stored in the capacitor occurs.

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Draw and explain working of BJT monostable multivibrator. Draw the voltage wave form of Base 1,Base 2,collector 1and collector 2.calculate the delay time T forwhich the circuit will remain in quasistable-state after triggering (12 Mark)

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What is the purpose of a pull-up resistor? Explain when this is needed and the consequences of its omission.

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Write a program in Arduino that, when it takes in a voltage range (0 to 5 volts), gives a corresponding servo motor angle with a range from 0 to 180 degrees.

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The set of AND and OR gates is a functionally complete set of gates.

a)true

b)false

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Assume that you are using a piezoelectric material to build a micro/MEMS actuator beam in order to pick up a red-blood cell (with mass of ~1picogram or 10-12grams). If the dimensions of this actuator beam are length=100µm, width=10μm, and thickness=1μm, what is the minimal voltage you need to apply to this piezoelectric actuator in order to pick up the red-blood cell? Please write down all your assumptions used to estimate the voltage required.

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1. Write a code that makes the MSP430 blink the red LED and the green LED at the same time. The two LEDs should be on at the same time and then off at the same time

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It is required to wind an armature of 36 slots in concentric three-phase pattern to suit 6 poles field system.

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