A steel tape is 30 m long at a temp of 15ºc when lying horizontal on the ground. Its c/s area is…

A steel tape is 30 m long at a temp of 15ºc when lying horizontal on the ground. Its c/s area is 0.08 cm2 and weight of 18.kg (18N) and. Co-eff of expansion is 117 x10-7/ºc. The tape is stretched over 3 supports which are at the same level and at equal intervals. Calculate the actual length between the end graduations under the following conditions. Temp = 25ºc, Pull -180 kgt, E = 2.1 x 105 N/cm 2. (16) 8. Draw a neat sketch and explain the prismatic compass (16) 9. What is a two point problem? How it is solved. (16) 10. Define three point problem and how it is solved by tracing paper method