Below is a topology for a typical variation of the Colpitts oscillator. Assume you want this oscillator to run at a center frequency of 7.5 MHz where C1 can be used for fine tuning. You have available the following standard +/- 10% tolerance capacitor values that you could use for C3 and C4. Which value should you pick? a. 270 pF
b. 330 pF
c. 390 pF
d. 470 pf
e. 560 pf
f. 680 pf
g. 820 pF
h. 910 pF
i. 1000 pF
j. 1200 pF

Apump is used to circulate hot water in a home heating system. water enters the well-insulated pump operating at steady state at a rate of 0.42 gal/min. the inlet pressure and temperature are 14.7 lbf/in.2, and 180°f, respectively; at the exit the pressure is 60 lbf/in.2 the pump requires 1/15 hp of power input. water can be modeled as an incompressible substance with constant density of 60.58 lb/ft3 and constant specific heat of 1 btu/lb or. neglecting kinetic and potential energy effects, determine the temperature change, in °r, as the water flows through the pump.

An engine runs on the ideal diesel cycle. the cycle has a compression ratio of 20 and a cutoff ratio of 2. the highest temperature in the cycle is 1200 k. if the heat into the system is 300 kj/kg of working fluid and using variable specific heats determine the work produced per mass of working fluid

In general, how do thermosetting plastics compare to thermoplastics in mechanical and physical properties?