What are the main branches of engineering

The 40-ft-long A-36 steel rails on a train track are laid with a small gap between them to allow for thermal expansion.

Silicon is an intrinsic semiconductor. Adding a small amount of phosphorus provides extra electrons. As a resuit, phosphorus is an p-type dopant. (True, False)

What is meant by stress concentration factor? How does this differ from the stress intensity factor?

Engineering stress and strain are calculated using the actual cross-sectional area and length of the specimen. a. True b. False?

Air is compressed adiabatically from p1 1 bar, T1 300 K to p2 15 bar, v2 0.1227 m3 / kg. The air is then cooled at constant volume to T3 300 K.

A vacuum gauge indicates that the pressure of air in a closed chamber is 02 bar (vacuum) The pressure of the surrounding atmosphere is equivalent to 750 in of mercury The density of mercury is 13.95 g / cn and the acceleration of gravity is 9.8.

The Reynolds number for flow over a fixed horizontal flat plate is constant throughout its length. a) True b) False

Briefly describe the function of the thermostatic expansion valve in a vapour compression refrigeration system

An agent in another state wants to become an agent in New York. The other state gives the same privileges to New York agents wanting to be licensed in that state as it does its own agents.

What color is dot 5 brake fluid