The Colby apparatus, as it relates to the SSC JE (Junior Engineer) Exam syllabus, is used for the determination of the coefficient of discharge (Cd) for various orifices and notches. This apparatus helps in studying the flow of water through these openings and is often used in the field of fluid mechanics and hydraulics.
This concise blog will reflect on the principles and applications of the Colby apparatus as part of their preparation for the exam.
For more exam-focused insights, also explore: “SSC JE 2023-BMC (Building Materials & Construction): Expected Questions”
This apparatus is used to measure the baseline of the tringle formed in triangulation.
Base Line
It is the most important one in triangulation on which the entire system of triangulation framework depends. Thus it needs to be measured very precisely. Apart from that, baseline measurement is used to assess the scale of triangulation.
Point to Remember
- Designed by Major General Colby.
- Eliminate the effect of change of temperature.
- Linear expansion 3:5 ratio
- Steel and brass metals are used.
- Brass is coated with a special preparation for steel
- Compound bar and sprite level are fixed at middle.
- Consist of micro wires (cross wires)
- 5 frame works (10 ft x 5+ 6 in x 5) = 52ft 6in
- This work is continued till the end of the base is reached.
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Takeaway
Unravel the principles and significance of the Colby apparatus in the context of the SSC JE (Junior Engineer) Exam curriculum. This apparatus is a crucial tool for calculating the coefficient of discharge (Cd) across diverse orifices and notches, offering insights into water flow behavior. It’s a cornerstone in the realm of fluid mechanics and hydraulics. Learn about its design, application, and its role in triangulation, ensuring your comprehensive preparation for the exam. Don’t miss out on this essential component of your SSC JE journey.
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