Electrical Engineering Answers

The open loop transfer function {Please note: open loop TF is the forward TF times the feedback TF i.e., 𝐺(𝑠)𝐻(𝑠)} of a unity feedback control system is given by 𝐺(𝑠) = 25 𝑠(𝑠+5) . a. Calculate the natural frequency of oscillation, the damped frequency of oscillations, damping ratio, the exponential frequency, percentage overshoot for a unit step input. b. The non-zero and finite steady state error for the appropriate input depending on the system type. c. If the damping ratio is to be made to 0.75 from the original value obtained in 2 (a) using a tachometer feedback, calculate the tachometer constant 𝐾𝑡 and determine the percentage overshoot then

A single DOF model of a vehicle suspension system is shown in Fig. 1. The vehicle is

travelling over a rough road with a horizontal velocity of 𝒗 m/sec. The road contour is

approximated by a sinusoid with a wavelength of 2 m and an amplitude of 3 mm. The

mass of the vehicle is 1500 kg. The equivalent spring constant of the suspension

system is 3 × 107 N/m and the system has a frictional coefficient of 1.5 × 105 N-s/m.

a. Write an expression for ‘y’ as a function of 𝒗 and time.

b. If 𝒗 = 𝟐𝟎 𝒎/𝒔, what is the maximum displacement and acceleration of the

body of the vehicle? Also add a matlab plot for this condition (input

displacement ‘y’ vs time and output displacement ‘x’ vs time on a single plot

with legend)

c. For what values of 𝒗 in m/s will the maximum displacement of the body be

limited to 4.5 mm?

d. For what value of 𝒗 the maximum displacement will be maximum? Find the

maximum displacement for that 𝑣.

Five batteries are connected in parallel to supply a certain load. Each battery consist of 12 cells in series. Each cell has an emf of 2V and the internal resistance of each cell is 0.15Ω. What should be the resistance of the load so that the total power consumed is 384 watts?

Find the values of the flags(carry,sign,zero,overflow) of the processor status register for the given example of two 12 bit no's in Hex (AB7 + DEF) and draw the circuit diagram also.

Explain the instruction format in detail as per the no of address in the instruction with examples?

Design a circuit of General register organization in which 16 registers are there from RO to R15.

(a) Perform the following microoperation and explain the operation in the steps through the diagram properly: ADD R13, R7,R10.

(b) Explain the control word as per the register configuration given above.

A battery of 10V emf and internal resistance of 0.50Ω is connected in parallel with another battery of 12V and internal resistance of 20Ω. What is the load current?

Explain the modes of transfer on input- output organization

The unique addresses assigned to the four registers (R11,R12,13,R14) of the I/O interface are equal to the XX3 , XX7 , XXB and XXF in Hex . Where XX is hex digits equal to your roll no . (if student is having roll no 45 than address are 453 ,457 ,45B , 45F in Hex ) .Show the well labeled external circuit that must be connected between and 12-bit I/O address from the CPU and the CS, RSI, and RS0 Inputs of the Interface. 

A 12V battery has an internal resistance of 0.05Ω. Two loads are connected in parallel across its terminal, the first drawing a current of 12A and the other taking a power of 200 watts. Determine the load terminals voltage?