Electrical Engineering Answers

Sketch the graph of the parametric equations

X(t)=t^2+1, y(t)=2+t at range of -5<_t<_5

Convert the following arithmetic expressions from infix to reverse Polish notation.

a. A * B + C * D + E * F

b. A * B + A * (B * D + C * E)

c. A + B * [C *D + E *(F + G)]

d. (A + B) * [C * (D + E) + F]     

How many characters per second can be transmitted over a 1200-baud line in each of the following modes? (Assume a character code of eight bits.)

a. Synchronous serial transmission.

b. Asynchronous serial transmission with two stop bits.

c. Asynchronous serial transmission with one stop bit.

A DMA controller transfers 32 bit words to memory using cycle stealing. The words are assembled from a device that transmits characters at a rate of 2400 characters per second. Each character is 8 bit length. The CPU is fetching and executing instructions at an average rate of 1 million instructions per second. By how much will the CPU be slowed down because of the DMA transfer?

With reference to the network shown in Fig. 13 by using Thevenin’s Theorem find the current in the load resistance RL = 30Ω?

With reference to the network shown in Fig. 13 by using Thevenin’s Theorem find the equivalent e.m.f of the network when viewed from terminal L and M.

Find the current through RL when it takes on values of 5Ω and 25Ω. Also, calculate the value of RL for which the power dissipated in it would be maximum and finds this power.

Evaluate the following;

a. 9p2

b. 6p4

c. 12p3

d. 10p8

A die is tossed twice find the probability that;

a. A one and six occurs.

b. At least one three occurs.

c. Both numbers are the same.

What is the effect of time constant on the response of a circuit?