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rotary engine on a propeller powered plane

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Q: Which sample machine consists of a wheel that spins freely on its axle?
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Which simple machine consist of a wheel that spins freely on its axle?

pulley


How propellers work in engineering?

The physics concepts of a propeller is that a props generate the thrust force that pulls a machine into the air. It also has aerodynamic properties that spins the propeller.?æ?æ


What are the parts of a dynamo?

Electric motor, the alternating-current alternator, and the rotary converter. A basic dynamo consists of a stator wound with copper coils and a magnetic armature. As the magnetic armature spins it induces a current in the copper coils.


How do you get parallelism in lapping?

Typically, a double-sided lapping machine is used. The machine laps both sides of the part at the same time. The machines typically have a system of pins/gears and retainers that move the parts across the face of the plate as the plate spins. This helps ensure that parts wear uniformly.


What is a machine that spins to generate electricity?

XYZ Inc. is considering buying a machine costing $120,000. There are two options Machine A and Machine B. Machine A will generate net cash inflow of $ 40,000, $ 30,000 & $ 30,000 in year 1, year 2 & year 3 respectively. Machine B will generate net cash inflow of $ 50,000, $ 60,000 & $ 70,000 in year 1, year 2 & year 3 respectively. A. Determine the payback period of the two projects and based on the result of your calculation which project should have to be accepted. B. Determine the discounted payback period of the two projects and based on the result of your calculation which project should have to be accepted. (Assume the market interest rate is 10%) C. Determine the Net present value of the two projects and based on the result of your calculation which project should have to be accepted. (Assume the market interest rate is 10%) D. From the given investment proposal evaluation techniques which on is better? Why?