Consider the general plane motion of a rigid body. At any given instant, the velocities of the various particles of the rigid body are the same as if the body were rotating about a point on the plane, called the __________. Choose the best answer according to our textbook.

Question 4 options:

Design a double-dwell cam to move a follower from 0 to 2.5 in. in 60°, dwell for 120°, fall 2.5 in. in 30°, and dwell for the remainder. The total cycle must take 4 sec. Size the cam for a 1-in. radius roller follower considering pressure angle and radius of curvature. Use eccentricity only if necessary to balance these functions. Plot both these functions. Draw the cam profile. Repeat this for a flat-faced follower. Which one would you use?

How to calibrate non-contact CMM(Coordinate Measuring Machine)? Explain in detail.

Describe the different impacts that local or global scales of action may have on a proposed policy. Of the two, which scale of action is more impactful for a commercial building retrofitting?

Describe a flow with non-zero curl and negative divergence. Provide a common example of when this type of flow occurs.

Determine the Maximum Range for the Gulfstream G550 at 41,000 feet. The weight of the plane when full of fuel is 91,000 pounds, and it holds 6,165 gallons of fuel (6.67 pounds per gallon). The wingspan is 91.5 feet and the wing platform area is 1,137 square feet. The Oswald efficiency factor is 0.9 and the zero-lift drag coefficient is 0.0165. The Specific Fuel Consumption rate is 0.6414 pounds per pound-hour.

Why air-cooled and furnace-cooled materials cooled for a duration of 1 hour or 60 minutes.

Using the Lumen Method to find out how many fittings are required for a square conference room which requires 500 lux from CIBSE Guide, of area 200 m2, using the T5 fluorescent fittings at 1.2 meter long each and at 2 m high measured from the light source to the working surface.
The 1.2m T5 luminaire has 2700 lumens each.
Your answer should mention about all the light losses, say, due to surface reflectance at ceiling, wall and floor, light loss factor, maintenance factor, etc,.

Please refer to the article titled as “Sustainable Construction Excellence for a Better Future in Malaysia, published in The Ingenieur, Vol. 69 January – March 2017 by the Board of Engineers Malaysia. Identify the key challenges in sustainable construction and what should be undertaken to achieve sustainable cities?

A manufacturing process produces piston rings, with ID (inner diameter) dimension as shown above. Process variation causes the ID to be normally distributed, with a mean of 10.021 cm and a standard deviation of 0.040 cm. a. What percentage of piston rings will have ID exceeding 10.075 cm? What percentage of piston rings will have ID exceeding 10.080 cm? (4) b. What is the probability that a piston ring will have ID between 9.970 cm and 10.030 cm? (This is the customer’s specification that the supplier tries to provide .) (ie.) If the specification is “9.970cm < ID < 10.030cm”, what %’age of piston rings are “out of spec”? c. Half (50%) of all piston rings have ID below 10.021 cm. What is the dimension corresponding to the smallest 10%, and what is the dimension corresponding to the largest 10%? What is the dimension corresponding to the smallest 20%, and what is the dimension corresponding to the largest 20%

2. (10 pts) Air (R = 0.287 kJ/kg.K) enters the compressor of a simple Brayton cycle at 94 kPa and 7^oC. The pressure ratio is 19.2, the compressor efficiency is 81%, the turbine inlet temperature is 1600 K and the turbine isentropic efficiency is 85%. The mass flow rate is 21 kg/s. Using variable specific heat analysis, determine:
   1. (2 pts) The power input to the compressor, in kW.
   2. (2 pts) The rate of heat input in the combustion chamber, in kW.
   3. (3 pts) The net power produced by the engine, in kW.
   4. (1 pt) The overall efficiency
   5. (2 pts) The density of the air exiting the compressor, in kg/m³.

            What do we mean when we say “a preferred size”? Explain and give an example.

A cylindrical storage tank contains liquefied propane under a pressure of 1.5 MPa (gage pressure P=1.5 MPa) and is subjected to a torque T=5 kN-m. Knowing that the tank has an inner diameter of 320 mm and a wall thickness of 3 mm, find the principal stresses and determine the maximum shear stress.

Discuss the use of the RS-485 repeater.