Electrical Engineering Answers

Given a synchronous machine with three separate stator windings a, b, c

displaced physically by 120 o , sketch a graph showing the variations of emfs

developed in the windings against time.

What is the voltage transfer function of this buffer circuit?

 How is loss of prime mover detected? What are the problems encountered in implementing this protection?

Judge the feedback polarity and configuration of multistage amplifier in the circuit.

on proteus Design a voting system with 5 voters. Inputs should be 5 inputs representing each vote. Outputs

should be a LED which turns on if majority votes are cast in favor, as well as a display of the

number of votes cast in favor and against. Any time there are three or more of the five who vote

in favor, then there is a majority, and the LED needs to turn on and appropriate number displayed.

For the votes display, use four multiplexed 7-segment displays connected as shown in the

following figure that will display both the number of votes in favor and against.

1. Write an algorithm and draw the flowchart that will ask the user to enter 3 real

numbers (x,y and z) as input. The algorithm will calculate and print the

following;

a. The area of a circle by using x as diameter. (Consider pi as 3.14)

b. The area of a rectangle by using y and z as both sides.

c. The area of a triangle by using x as height and z as base

What do you understand by a balanced three-phase load?

R1, = 6 Ω, R2 = R3 = 2 Ω, and voltage = 14 volt, determine the total electric current in circuit as shown in figure

below.

An opamp is working as an adder in which it consists of three resistances such as 30 ohm, 60 ohm and 90 ohm respectively. Three voltages are applied to these resistances in according to all resistances as 150v, 250v and 300v respectively. Then compose an adder and evaluate the total output voltage if it is having feedback resistance of 600ohm