Electrical Engineering Answers

The device parameters for n-channel JFET are maximum drain current (IDSS) = 10mA, pinch-off voltage (Vp) =-4V

Calculate the drain current for 

(a) VGS= 0V (b) VGS=-1V (c) VGS=-4V

Three balanced Y-connected loads are installed on a balanced three-phase four-wire system. Load 1 draws a total power of 6 kW at unity PF, load 2 pulls 10 kVA at PF  0.96 lagging, and load 3 demands 7 kW at 0.85 lagging. If the phase voltage at the loads is 135 V, if each line has a resistance of 0.1 , and if the neutral has a resistance of 1 , find (a) the total power drawn by the loads; (b) the combined PF of the loads; (c) the total power lost in the four lines; (d) the phase voltage at the source; (e) the power factor at which the source is operating.

Give one real-life example in Computers of Deadlock and how to prevent it from occurring?

area = c * b * sin a / 2

What do you call this OP-AMP configuration? Derive its output expression.

  If V1(t)=sin(2000Πt), What is output voltage at t=3ms? C=1uF and R=1kΩ

1. What is the next root of x₁ given the following

a. The angle line tangent to the function f(x) makes at x = 3 is 57^o with respect to the x-axisb. The initial estimate of the root is x_o  = 3, f(3) = 5.           Root equation is f(x) = 0 and solve it using Newton-Raphson Method

1. What is the second iterative value of the root of te^-t – 0.3 = 0 using the bisection method, given an initial value of [1,5].
2. What is the absolute relative approximate error at the end of the iteration, given that the beginning of an iteration is the lower and upper guesses of the root are x_l and x_u. use bisection method to find the root of f(x) = 0.
3. Solve the square root of R from the equation x² – R = 0, using the Newton-Raphson Method.

A battery of 10 volts emf and points internal resistance of 0.50 ohms is connected in parallel with another battery of 12 volts and internal resistance of 0.80 ohms. The terminals are connected to an external load resistance of 20 ohms. What is the load current?