Two spur gears in mesh are designated as a and b. gear a has 40 teeth of 4 inch-i diamteral pitch. gear b has a pitch circle diameter of 16 inches. determine. i. the number of teeth on gear b ii. the circular pitch. iii. the centre -to centre distance between the gears.

Apiping systems consists of 6 m of 6-std type k and 12 m of 4-std type k, both drawn copper tubing. the system conveys ethylene glycol at a rate of 0.013 m3/s. the pressure drop across the system is to be calculated. there are two 90° elbows in the 6-in pipe, a reduction from the 6-in pipe to the 4-in pipe and four 90° elbows in the 4-in pipe. all fittings are soldered (same as flanged) and regular. the inlet and outlet of the system are at the same height.