A 5 kW split-phase motor running at 1750 rev/min is used to drive a rotary pump, which operates 24 hours per day. An engineer has specified a 200 mm small sheave, and 300 mm large sheave, and B3000 belts. The service factor was 1.3. Analyze the drive and estimate:
(a) center-to-center distance.
(b) suitable number of belts.
(c) F1, F2, Fc and Fi.
(d) the factor of safety.
(e) the belt life in passes

Justify selection of a non-destructive testing method to be used for inspection of welds on a 3m high 2m diameter steel storage tank on a remote worksite.

Which type of process does the equation dQ= T dS hold?

how would you manfacture a 1mm hole 200mm deep and inside a metal block? (process) (introduction to manufacturing ,1st year engineering)

1. a) Make sketches to differentiate between microstructures in castings generated by homogeneous and by heterogeneous nucleation. What sort of structures provide the best mechanical properties?

b) For a simple binary alloy exhibiting complete solid solubility, describe how a typical composition will solidify from the moltern state. What is coring and what would encourage such an alloy to be cored? Can coring happen in alloys exhibiting an eutectic reaction?

Design fins/convection enviornment to remove 27 W/cm² from a square copper surface (50x 50 cm) while keeping the surface at a temperature of 80^oC or below. The convection environment has a bulk temperature of 20^oC. (neglect any contact resistance between the surface and the fins)

Explain why glass fiber are very strong in tension and bulk glass generally is not.

Give an example of a stress state where Mohrs circle degenerates to a point.

QUESTION 1

In the case of arbitrary planar curvilinear motion the best choice for coordinate system is tangential-normal system

QUESTION 2

Tangential coordinate axis is selected so that its positive direction is in the direction of motion of particle

QUESTION 3

Normal coordinate is selected so that its positive direction is in

QUESTION 4

Normal acceleration is

QUESTION 5

Particle moves along curvilinear path with velocity of 30 mi/h. If the radius of curvature at position P is 1,500 ft, what is normal acceleration of the particle at position P in [ft/s²]?

Name or describe in some detail a technique that can be used to determine the elemental composition of surfaces. YOU SHOULD mention one technique and write more details about it

Manufacturing Process

list the similarities and differences between direct extrusion and drawing.

From the expressions we derived for the kinetic theory of gases, it can be shown that the fraction of gas molecules having speeds in excess of a particular speed c is

f(c) = 1 + [2*alpha/sqrt(pi)] exp(-alpha²) - erf(alpha)

where alpha = c/c_m , c_m is the most probable speed and erf() is the error function. Consider now 1000 H₂ atoms in thermal equilibrium at 0^oC. Consider the range of speeds from 0 to 3,000 m/s divided into 100 m/s intervals.

(a) Usint the equation above, plot the number of molecules in each increment

(b) Also, on your plot, show c_m, c bar (average speed), and c_rms (rms speed)

A cast aluminium-silicon alloy containing 12 % silicon which cannot be age hardened would normally solidify with a hyper-eutectic structure. This alloy can be used for both sandcasting and metal die-casting. Describe THREE methods in which the cast metal can be strengthened by controlling the microstructure during solidification.

Natural gas consists of a mixture of several gases. One example is 84% methane, 14.8 ethane, 0.7% carbon dioxide and 0.50% nitrogen by volume. Calculate the specific heats, the molecular weight and the k value of the mixture

Write the lay-up in proper composite lay-up notation. 45 Fabric (fiberglass); 0 (Carbon fabric); 0 Tape (Carbon); 0 Tape (Carbon); 90 Tape (Carbon); +45 Tape (Carbon); -45 Tape (Carbon); +45 Fabric (Carbon); -45 Fabric (Carbon); -45 Tape (Carbon); +45 Tape (Carbon); 0 Tape (Carbon); 0 Tape (Carbon); 0 (Carbon fabric); 45 Fabric (fiberglass);