Recent content by Yam

According to my lecture notes, for centrifugal impellers Backward curved blades have a outlet blade angle of less than 90, radial blades have curved blades have a outlet blade angle of 90, Forward curved blades have a outlet blade angle of more than 90. As such i have 2 questions 1) does the...

After getting a multimeter, is there anyway i can measure the current without cutting the electrical cables? I have the circuit diagram of the entire system, would it help if i uploaded it? not too sure if i am allowed to do so or not too.

I can't seem to find any information of the power demand of this equipment, its actually a large antique chemical photobooth. Ill do my best to search for the power demand

Dear Forum Members, I imported an electrical equipment from the US which uses 110v, my country used 220v and as such i need to pirchase a step down transformer. The equipment is a piece of antique and doesn't come with much instructions. I could only get a circuit diagram and i am puzzled by...

Homework Statement What is the difference between the Centre of Pressure and Centroid Homework EquationsThe Attempt at a Solution My understanding is that the centre of pressure acts on a centroid. So, how come they can be on different positions for a submerged surface?

Haha! Yes! i solved it after 2 hours haha! thanks guys

Homework Statement An engineer is trying to model a lithium battery with a thevenin equivalent circuit. She first connects a voltmeter across the battery and gets a reading of 3.7V. She then connects 0.5 Ohms resistor across the battery terminals. The reading now drops to 3.2V. Draw the...

Thanks for pointing this out! cheers!

hmmm.. i don't understand, wouldn't maximum friction be when μmgcos(angle) = mgsin(angle) ?

This got me interested. How does pre-spinnign their wheel reduce wear and tear from friction?

I made a mistake with my post. A wheel rolling on a surface with constant acceleration experiences frictional force. I kind of understand why. A wheel rolling on a horizontal flat surface at a constant speed means that the wheel is pure rolling without slipping. There is no translational...

Yes i understand this point, but i still don't quite understand why you have friction on an inclined plane, also what kind of friction is it?

Homework Statement A wheel rolling on a horizontal flat surface at a constant velocity experiences no friction force. Why? A wheel rolling on an inclined surface at a constant velocity experiences friction force. Homework EquationsThe Attempt at a Solution A wheel rolling on a horizontal flat...

I understand now, thank you for your help! cheers.

I don't quite understand this part, when did i allow the angular coordinate to vary between zero and 2pi? What is meant by the angular coordinate?