Engineering Answers

Give one real-life example of Deadlock in Computers

A field is in the form of a regular pentagon. The direction of the bounding sides was surveyed with an assumed meridian of 5° to the right of the true north and south meridian. As surveyed with an assumed meridian, the bearing of one side AB is N 33° 20’ W. Compute the true bearing and azimuth of each side of the field.

Show that 𝑦 = ln (𝑥) is a solution of 𝑥𝑦′′ + 𝑦′ = 0 

The unique addresses assigned to the four registers (R1,R2,R3,R4) 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.

Two tangents having azimuths 240 and 282 degrees are connected by a spiral curve with 191 m radius of circular curve. The width of roadways is 15 m. If the design velocity is 75 kph. Determine the ff.

Air at a pressure of 101.3 k Pa and 288.8 K enters inside a tube having an inside diameter of 12.7 mm and a length of 1.52 m with a velocity of 24.4 m/s. Condensing steam on the outside of the tube maintains the inside wall temperature at 372.1 K . Calculate the convection coefficient of the air. ( Note: This solution is trial and error. First, assume an outlet temperature of the air. )

Determine The Saturated Temperature, Saturated Pressure And Enthalpy For Water At Specific Volume Of Saturated Vapor At 10.02 m^3/kg.

a) Describe three types of PLCs and their application including advantages and disadvantages of each type. 

b) Describe the four main components that identify the operating characteristics of a PLC.  

c) Describe the four different types of external input and output devices that can be connected to a PLC for plant control or monitoring. 

a) Describe control loops in terms of their individual elements including their application. (Support your answer with images or diagrams) 

b) Explain PID controllers and their application. (Support your answer with images or diagrams) 

A piston-cylinder device contains 0.1 m3 of liquid water and 0.9 m3 of water vapor in equilib­rium at 800 kPa. Heat is transferred at constant pressure until the temperature reaches 350°C.

(a) What is the initial temperature of the water?

(b) Determine the total mass of the water.

(c) Calculate the final volume.

(d) Show the process on a P-v diagram with respect to saturation lines.