For the given Common Emitter NPN Amplifier, the transistor made of Germanium diodes, βDC=80,VCC = 16 volts, R1= 62 KΩ, R2= 9.1 KΩ, RC= 3.9 KΩ, RE= 0.68 KΩ.

a) Name the type of biasing used in the above circuit?

b) Find VE?

c) Find VCE?

d) Find VC?

e) What is the name of the capacitors C1, C3and C2?

Awall of 0.5m thickness is to be constructed from a material which has average thermal conductivity of 1.4 w/mk. the wall is to be insulated with a material having an average thermal conductivity of 0.35 w/mk so that heat loss per square meter shall not exceed 1450 w. assume inner wall surface temperature of 1200°c and outer surface temperature of the insulation to be 15°c. calculate the thickness of insulation required.