G A power amplifier has an output impedance of 47+j8Ω. It produces a no-load output voltage of 156 V at 300 Hz. Problem 11.096.a - Load impedance of a power amplifier Determine the impedance of the load that achieves maximum power transfer. The impedance of the load that achieves maximum power transfer is ( – j ) Ω.

Explain the difference laminar and turbulent flow. explain it with the shear stress and the velocity profiles.

Coiled springs ought to be very strong and stiff. si3n4 is a strong, stiff material. would you select this material for a spring? explain.

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.