Recent content by PetePetePete

I know the units of measurement for this are: MPa m^0.5 However a question I am working on has it as MPa m^-0.5 What is the difference and does it affect the way I calculate the answer? Would appreciate your insight. Thanks Pete

Attached is what I think needs to be done, but would appreciate someone confirming? Thanks

Hi, I have an electrical instrument which needs a 12V feed. I have 2 power systems, and I want to select between them using an On-Off-On switch. I presume an SPDT is appropriate? I need to run the feed to the instrument through a 3A circuit breaker. Please could someone explain how I...

Sorry I am not sure which components you mean? My understanding was: A = fully rotational bi-directional fixed displacement hydraulic motor B & C = Pressure Relief Valve D = bi-directional fixed displacement hydraulic pump E = Electric motor F = Variable Restriction with Integral Non Return...

< Mentor Note -- thread moved to HH from the technical engineering forums, so no HH Template is shown > Hi, I am struggling with a couple of questions and would like to check my working so far. Question 6: To explain the operation: I believe the electric motor turns the pump which draws...

I have had another stab at it, and I would really appreciate it someone could sense check my answers? I haven't shown all the working on here, and the questions are in the attached files. Q1 a) Stress = Force / Area i) 5000N / 706.68mm2 = -7.07MPa ii) 5000N / 1600mm2 -3.125MPa b) i) Strain =...

So for the first question, I used Stress = Force / Area. Working: 706.86mm2 / 5000N = 7.07Pa 1600mm2 / 5000N = 3.125Pa I think I have figured out the 2nd question using Strain = Stress / Youngs Modulus Working: 7.07Pa / 200GN = 3.535 x 10^-11 3.125Pa / 200GN = 1.5625 x 10*-11 Question c) I...

I am struggling with a question in my coursework, and would appreciate some guidance. The question is: The component shown in Fig 1 is made from a material with the following properties and is subjected to a compressive force of 5kN. Material Properties : Young’s Modulus of Elasticity – 200...