Question: A 250-V, 4-pole, wave-wound d.c. series motor has 782 conductors on itsarmature. It has armature and series field resistance of 0.75 ohm. The motor takesa current of 40 A. Estimate its speed and gross torque developed if it has a flux per pole of 25 mWb Answer: Step 1 Mechanical Engineering homework question answer, step 1, image 1 Mechanical Engineering homework question answer, step 1, image 2 Step 2 Mechanical Engineering homework question answer, step 2, image 1 Step 3 Mechanical Engineering homework question answer, step 3, image 1

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Question:

Develop a ladder logic program that will allow you to fill two tanks with water by a pump, as it is shown below (Using Triologi ). The pump is operating manually by a push-button “Start” (normally open) and also has a push-button for “Stop” (normally closed). When the first tank becomes full, the circuit should automatically start to fill the second tank by closing the first valve, and opening the second valve, and when the second tank is full, the pump disconnects automatically and a “sign lamp” is turned on to show that the 2nd tank is full. The two float switches are both normally open.

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