Zoom Video Communications Interview Questions and Answers

1st angle and 3rd angle projection are two methods of representing a 3D object on a 2D surface.

• In 1st angle projection, the object is placed in front of the viewing plane and the views are taken from behind the object.

• In 3rd angle projection, the object is placed behind the viewing plane and the views are taken from in front of the object.

• 1st angle projection is commonly used in Europe and Asia, while 3rd angle projection is commonly used in North America.

• The symbol for 1st a...read more

To draw front, top and side view of a drawing, follow these steps.

• Start by drawing the front view, which shows the object as it appears from the front.

• Next, draw the top view, which shows the object as it appears from above.

• Finally, draw the side view, which shows the object as it appears from the side.

• Make sure to label each view with the appropriate dimensions and angles.

• Use a ruler and protractor to ensure accuracy.

Counter weight is a weight used to balance or offset another weight.

• Counter weight is used to balance or offset another weight.

• It is commonly used in machinery and equipment to prevent imbalance.

• Examples include elevator counterweights, crane counterweights, and flywheel counterweights.

• Counter weights can be made of various materials such as concrete, steel, or lead.

• They are often designed to be easily adjustable or removable for maintenance purposes.

Section line is used to show the shape of an object in a section view, while centre line is used to indicate the center of a feature.

• Section line is a thick, solid line that is drawn at a right angle to the cutting plane line.

• Centre line is a thin, long, dashed line that is used to indicate the center of a feature.

• Section line is used to show the shape of an object in a section view, while centre line is used to indicate the center of a feature.

• Section line is used to indicat...read more

Casting defects are imperfections that occur during the casting process.

• Porosity

• Shrinkage

• Cracks

• Inclusions

• Misruns

• Cold shuts

• Warping

• Shifts

• Blowholes