In wire drawing, is there a difference and if so how much is the force required to draw a wire from cross sectional area of A₀ down to A₁ in one operation as compared to drawing it through two dies in tandem. Assume that there is friction but no redundant work

The DOSH is responsible for ensuring the occupational safety, health and welfare of people at work as well as protecting the public from safety and health hazards arising from various activities of various sectors. Describe briefly any TEN (10) of these sectors.

Provide the Risk Assessment for Testing and Commissioning of Drainage System.

Based on OSH legislations in Malaysia, briefly describe the FIVE areas from the history, role and development of OSH

Briefly describe 14 Regulations under Factories and Machineries Act, 1967

During a cold winter day. wind at 70 km/h is blowing parallel to a 4 m high and 10 m long wall of a house. If the air outside is at 7°C and the surface
temperature of the wall is 13°C, determine the rate of heat loss from that wall by convection.

1. Define/explain following terminologies:

   1. (a) Sketch a positive cambered airfoil and identify upper surface, lower surface, leading edge, trailing edge, camber line, camber, chord line and airfoil thickness on your sketch

   2. (b) Sketch and explain the lift curve (lift coefficient versus angle of attack) for a positive cambered airfoil. Then compare it with a symmetrical airfoil lift curve.

Consider a Rapid Prototyping product and discuss its manufacturing process in your own words. Include the material(s) used and significant properties of the product. You may choose one of the process listed below:

1. Stereolithography
2. Fused-deposition modelling
3. Multijet/Polyjet modelling
4. Selective laser sintering
5. Ballistic-particle manufacturing (3D printing)
6. Electron-beam melting
7. Laminated-object manufacturing

I am trying to understand a few injection molding calculations. I will appreciate your assistance.

How do I calculate part weight for plastic injection molding?

Is it mass * density or volume * density?

My part is 29.126 grams and I am using  Polypropylene (PP) which has a density of 0.899 g/cm³ .

Therefore : 29.126 * 0.899= 26.184 grams

To convert to ounce: 26.184* 1/28.3495=0.9236 ounce

Is the above correct?

How do I calculate shot weight?  Please explain clearly and give and example.

How do I calculate core and cavity cost?

I will appreciate a clear and will written explanation because I want to understand how its done.

Thank you

The pressure ratio λ = 1.5 in the process of isochoric heat supply for the
cycle of an internal combustion engine with a mixed supply of heat =
1034 kJ/kg and the compression ratio = 13. Find the thermal efficiency
and temperature at the characteristic points of the cycle if the initial
parameters are 0.09 MPa and 70 ◦C and the working substance is air.

Ans: (i) ηth = 57.5% (ii) T2 = 956.9 K
(iii) T3 = 1435.5 K (iv) T4 = 2122.86 K
(v) T5 = 890 K

Compare and contrast distillation, absorption and extraction. Tabulate your answers.

Explain the least square best fit for second order for any one of the complex shapes of
your choice.

We Will Choose An Iron Based Material
average tensile 50 Mpa (material
We will calculate Sigma D, Re, Rm, Stress Amplitude and Maximum Stress.
How much tensile amplitude can the haight diagram max tensile

(I need the table and values ​​in any sample that I will determine myself. values ​​can be matched.)

(can be ready example just back down to 50Mpa)

When the start button is pressed, the conveyor belt is working. Products on the tape are counted by the sensor. Conveyor belt stops when there are 20 products. The lamp that gives the full information is on. The whole system will stop after the lamp lights for 15 seconds. Create the appropriate PLC system. Draw the ladder diagram?