Ahydraulic cylinder is to compress a car body down to bale size in 1 min. the operation requires a 60ft stroke and a 1500-lb force. if a 2000-psi pump has been selected and assuming 80% efficiency, find: a) the required piston area b) the necessary pump flow rate c) the hydraulic hp delivered to the cylinder d) the output hp delivered by the cylinder to the load

Manometers are good examples of measuring instruments, nowadays they are not as common as before. a)-capacitive probe gauges b)-gravitational gauges deformation ) gauges d)-digital gauges

What is creep? what is stress relaxation?

Afoot bridge is made as a simple deck, 4 m long, with a cross section 2 m (wide) and 20 cm thick, and made of wood. the deck is supported at the two ends. the maximum load allowable on the bridge is 10 tons, provided it is uniformly distributed on the deck. to sense this load, a strain gauge is placed at the center of the bridge and its resistance is monitored. if the sensor has a nominal resistance of 350 s2 and a gauge factor of 3.6, what is the reading of the strain gauge at maximum load? the modulus of elasticity for the wood used in the construction is 10 gpa.