Engineering Answers

A doctor is on contract to a medium-sized oil company to provide medical services at remotely located,

widely separated refineries. The doctor is considering the purchase of a private plane to reduce the

total travel time between refineries. The doctor can buy a used Lear jet now or wait for a new very light

jet (VLJ) that will be available 3 years from now. The cost of the VLJ will be $1.9 million, payable when

the plane is delivered in 3 years. The doctor has asked you, his friend, to determine the present worth

of the VLJ so that he can decide whether to buy the used Lear now or wait for the VLJ. If the MARR is

15% per year and the inflation rate is projected to be 3% per year, what is the present worth of the VLJ

with inflation considered?

suppose the lowest point of a Ferris wheel is 2 meters off the ground, and its radius is 12m. Starting at the lowest point, it makes one complete revolution every 3o seconds. Find a cosine function that gives the height above the ground of a riding child in terms of the time t in second

A canned food product is thermally processed at 125 ° C; the coldest point presents the following values: fh = 40 min, jh = 0.8, jc = 0.8, Initial of the product = 24 ° C and CUT = 8 min. The deteriorating microorganism has a D121 = 1 min and z = 14 ° C. An acceptable spoilage rate has been established as one can for every million cans processed. If the initial microbial population is 106 microorganisms per can, determine:

a) The g value

b) The process time

A 234 volts three-phase source serves a balanced load consisting of three equal impedances, each of which has a resistance of 3.6 ohms and reactance of 4.8 ohms Calculate the line currents and the total power if the impedances are connected in delta.

In how many ways a relation can be represented? State two different

examples to represent each of them.

What is nested Quantifier? Is order important for nested quantifier?

Explain your answer with appropriate example.

“There is a mechanism in which CPU relinquishes the control over the buses for carrying out various operations between memory unit and I/O unit.”Justify your answer and explain such process in detail with the help of suitable diagram .

Identify and explain the mode of data transfer in which CPU continuously monitor the status register for transferring the data. Support your answer with a neat and clean diagram.

 What do you mean by IOP? Explain the concept of CPU-IOP communication with the help of its flow chart. Draw appropriate diagram also. 

Suppose you are given with a ROM chip of size 1024*8 and 5 RAM chips of size 512*8. 

Show diagrammatically the connections of Memory to CPU and also explain the working operations with memory map table.