Acylindrical rod of copper (e = 110 gpa, 16 × 106 psi) having a yield strength of 240 mpa (35,000 psi) is to be subjected to a load of 6660 n (1500 lbf). if the length of the rod is 380 mm (15.0 what must be the diameter to allow an elongation of 0.50 mm (0.020

At 12 noon, the count in a bacteria culture was 400; at 4: 00 pm the count was 1200 let p(t) denote the bacteria cou population growth law. find: (a) an expression for the bacteria count at any time t (b) the bacteria count at 10 am. (c) the time required for the bacteria count to reach 1800.

Shafts are machine elements that are used to a) carry axial loads b) direct shear loads c) transmit power d) rotate at constant speed e) none of the above circular and square shafts subjected to the same torque under the same circum behave a) the same way b) almost the same way

Which of the following components of a pid controlled accumulates the error over time and responds to system error after the error has been accumulated? a)- proportional b)- derivative c)- integral d)- on/off.