Consider a squared and ground oil-tempered compression helical spring. The spring is made of 3-mm wire, has an outer diameter of 30 mm, 32 total coils, and a free length of 240 mm. Determine the a. spring index, C.
b. pitch of the coil, p.
c. spring deflection when closed solid, ys.
d. force to close the spring solid, Fs.

The mass flow rate of the fluid remains constant in all steady flow process. a)- true b)- false

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

An ideal otto cycle with air as the working fluid has a compression ratio of 8. the minimum and maximum temperatures in the cycle are 300 k and 1340 k. use constant specific heats at room temperature to determine (a) the amount of heat transferred to the air during the heat- addition kj/kg, (b) the thermal efficiency, and (c) the thermal efficiency of a carnot cycle ope limits. process, in rating between the same temperature