Briefly describe two methods of drawing an ellipse.
What will be an ideal response?
The first step is to establish the limits of the ellipse by drawing a limiting box, which appears as a parallelogram in the pictorial view. For normal surfaces on the object, the sides of the parallelogram are parallel to the isometric lines. The easiest way to create the ellipse is to use an ellipse template (when drawing is done by hand) and selecting the ellipse that is tangent to the sides of the limiting box. When a 2-D CAD tool is used, an ellipse is created by specifying its major and minor diameters in an ellipse creation tool; the ellipse is then rotated into the correct orientation.
The ellipse also can be constructed using the four-center method. The construction locates four centers that can be used for drawing four arcs (two large arcs and two small arcs) that approximate an ellipse. These arcs may be sketched or may be drawn with a compass.
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In the following take 
and 
for nitrogen gas:
(a) Three pound moles of nitrogen at 70(°F), contained in a rigid vessel, is heated to 350(°F). How much heat is required if the vessel has a negligible heat capacity? If it weighs 200(lbm) and has a heat capacity of 
, how much heat is required?
(b) Four pound moles of nitrogen at 400(°F) is contained in a piston/cylinder arrangement. How much heat must be extracted from this system, which is kept at constant pressure, to cool it to 150(°F) if the heat capacity of the piston and cylinder is neglected?
A(n) ____ allows multiple features, which normally require multiple section views, to be captured on a single view.
A. offset section B. cutting plane C. orthographic view D. half section
?What is a turbocharger that pressurizes the intake manifold after the throttle plate called?
A. ?A draw-through turbo B. ?A blow-through turbo C. ?A normally aspirated turbo D. ?None of the above
Which of the following conditions could result in brake torque imbalance?
A. Slack adjusters of different lengths B. Ruptured spring brake service diaphragm C. Out of adjustment brakes D. All of the above