Viva questions - SlideShare Dec 12, 2013Viva questions 1. ScaleS Q1. Define R.F.? Ans: Representative Fraction (R.F.) is measure of reduction or enlargement of dimensions of an object while drawing. It is defined as ratio of Length of drawing to Actual length of object, both measured in same units. Being a ratio, R.F. is unit less. Q2. How will you find L.O.S? 300+ TOP ENGINEERING DRAWING Multiple Choice Questions 7. In a trimetric drawing, the relationship of the angle between axes to each other is: A. three are equal B. two are equal C. three are unequal D. none of the above 8. In an isometric sketch of a cube: A. the frontal face appears in its true shape B.