The gear on the right is the driving gear. If the driving gear moves at 100 RPM and the diameter of the wheel attached to the
driven gear is 2.75 in, how far in feet will the robot move in 2 minutes? How long in
seconds will it take to travel 100 feet?
Driven Gear Teeth:
Driving Gear Teeth:
Input Speed:
Gear Reduction:
Output Speed:
Distance Travelled in 1 Rotation:
Distance Travelled in 2 minutes:
How long to travel 100 feet:

Air is to be cooled in the evaporator section of a refrigerator by passing it over a bank of 0.8-cm-outer-diameter and 0.4-m-long tubes inside which the refrigerant is evaporating at -20°c. air approaches the tube bank in the normal direction at 0°c and 1 atm with a mean velocity of 4 m/s. the tubes are arranged in-line with longitudinal and transverse pitches of sl- st 1.5 cm. there are 30 rows in the flow direction with 15 tubes in each row. determine (a) the refrigeration capacity of this system and (b) pressure drop across the tube bank. evaluate the air properties at an assumed mean temperature of -5°c and 1 atm. is this a good assumption?

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

Which of the following components of a pid controlled accumulates the error over time and responds to system error after the error has been accumulated? a)- proportional b)- derivative c)- integral d)- on/off.