When designing a current-gain-stabilized voltage-divider bias circuit such as this one, the rule of thumb used for the emitter voltage is .

The higher the astm grain size number, the finer the gran is. a)-true b)-false

Air flows over a heated plate àt a velocity of 50m/s. the local skin factor coefficient at a point on a plate is 0.004. estimate the local heat transfer coefficient at this point. the following property data for air are given: density = 0.88kg/m3 , viscosity 2.286 x 10 ^-5 kgm/s , k = 0.035w/mk ,cp = 1.001kj/kgk. use colburn reynolds analogy.

Apressure vessel with an r/t 20 cannot be treated as thin walled vessel. a)-trune b)- false