7.68 A CE amplifier utilizes a BJT with β = 160 biased at IC = 0.4 mA; it has a collector resistance RC = 10 kΩ. Find Rin, Ro, and Avo. If the amplifier is fed with a signal source with a resistance of 10 kΩ, and a load resistance RL = 10 kΩ is connected to the output terminal, find the resulting Av and Gv. If the peak voltage of the sine wave appearing between base and emitter is to be limited to 5 mV, what Imagesig is allowed, and what output voltage signal appears across the load?

Draw the engineering stress-strain curve for (a) bcc; (b) fcc metals and mark important points.

Steam enters a converging nozzle at 3.0 mpa and 500°c with a at 1.8 mpa. for a nozzle exit area of 32 cm2, determine the exit velocity, mass flow rate, and exit mach number if the nozzle: negligible velocity, and it exits (a) is isentropic (b) has an efficiency of 94 percent

Refrigerant-134a enters the compressor of a refrigerator as superheated vapor at 0.14 mpa and -10°c at a rate of 0.05 ka/s and leaves at 0.8 mpa and 50°c. the refrigerant is cooied in the condenser to 0.72 mpa and 26'c. it is then throttled to 0.15 mpa. sketch the t-s diagram for the system and evaluate: 6) the rate of heat removai from the refrigerated space (kw), it) the power input to the compressor (kw), ii) the isentropic efficiency of the compressor (%), and iv) the cop of the refrigerator.