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Select the most economical W section of 50ksi steel for a 40 ft simple beam that supports a service concentrated load PL=30k at the midspan is laterally unbraced except at its ends and center line.

If the outside diameter of a pipe is 2 m, the length of a piece of insulation wrapped around it would be a) - 628 cm b) - 12.56 m. c) - 12.56 cm d) - 62.8 m

Specific cutting energy increases with increasing the cutting speed. a) True b) False

An old refrigerator consumes 187 W of power. Assuming that the refrigerator operates for 17 hours everyday, what is the annual operating cost of the refrigerator, if the cost of electricity is $0.06 per kWh?

Brittle failure is a type of failure in which: (a) There is large amount of plastic deformation (b) Large amount of elastic deformation (c) Very little plastic and elastic deformation (d) None of the above

Roentgens are used to measure the amount of: uranium fuel burned radiation hydrogen isotopes

What is the maximum % carbon for structural steel?

An airplane flies from San Francisco to Washington DC at an air speed of 800 km/hr. Assume Washington is due east of San Francisco at a distance of 6000 km.

An example of Ferrous alloy is Brass a) - True b) - False

There is no difference in boring and drilling. a) - True b) - False