Engineering Answers

From the given cross section of an earthworks between A ( 20+200) and B (20+220) assuming

both have same slope and width of base. All measurements are in meters.

a. Compute the width of the base.

b. Compute the value of cut at station B if it has an area of 16.82 m2

c. Compute the volume between A and B with prismoidal correction

What makes axial flow fans more suitable for applications where large flow rates of air are to be handled. What new developments have taken place in the design of fans for air conditioning applications?

What is Engineering mechanic

determine the saturated temperature, saturated pressure and enthalpy for water at specific volume of saturated vapor at 10.02 m³/kg

Two kg of air in a closed system undergoes an isothermal process from 606 kPa and 200°C to 75 kPa. The heat transfer (expressed to ZERO decimal places) during the process is in kJ:

From the tables (air is assumed as ideal gas based on given conditions), the gas constant for air:  R = 0.2870 kJ/kg·K.

Design a spring for suspension system of a motorcycle with a weight of two people riding the bike. You should assume the required parameters as per the following table,

Sr. No.

Reg No

Starting d

Difference for selection of diameter

Ends of spring

1

1-10

0.01 x R

0.001 x R

Squared or Closed

2

11-20

0.01 x R

0.001 x R

Squared or Closed

3

21-30

(0.01 x R)/2

0.001 x R

Squared and Ground

4

31-40

(0.01 x R)/2

0.001 x R

Squared and Ground

5

41-50

0.01 x R

0.001 x R

Squared or Closed

6

51-60

0.01 x R

0.001 x R

Squared or Closed

7

61-70

(0.001 x R)/2

0.001 x R

Squared and Ground

8

71-80

(0.001 x R)/2

0.001 x R

Squared and Ground

* where R = Your Registration Number

Start your calculation first by using material 302 stainless steel and if the required result is not output, then change the material till you find one. Select the spring as wound.

HINT: Make an excel sheet for making the table of spring selection.

1.Find the Laplace Transform of the function g(t)=u(t)+2exp(-2t)u(t)+2cos(3000t)u(t)+

exp(-5t)sin(5000t)u(t) . Indicate the positions of zeros and poles .

2.) Find the Inverse Transform of the function 1/(s^2+6s+9)

A rope AB, 2.7 m long is connected at A and B to two points on the same level, 2.4 m apart. A load of 136 N is suspended from a point C on the rope 90 cm from A. What load connected to a point D on the rope, 60 cm from B, will be necessary to keep the portion CD level?

An air standard ideal Diesel engine (k for air = 1.4) operates with a pressure and temperature at the start of the compression stroke of 14.7 psia and 550°R. If the cut-off ratio and clearance volume are 2.5 and 1.0 ft3, respectively, calculate

(a) Pressure, temperature and specific volume at the 4 states of the cycle

(b) Clearance

(c) Thermal efficiency

(d) MEP for the cycle.

Write short notes on the following:

a) Projection

b) affine transformations

c) Phong's Shading Model

d) Scan conversion of polygons

e) B-splines