Engineering Chemistry Class Notes for B.Tech All Branch- CSE/ ME/ EEE/ Civil/ Mining

We have to upload daily notes for the Engineering Chemistry class. Students you can follow the daily Notice board. B.Tech CSE, Civil, EEE, ME, Mining.

We have to upload daily notes for the Engineering Chemistry class. Students you can follow the daily Notice board.

Bachelor Of Technology (B.Tech) -CSE, Civil, EEE, ME, Mining

(Common to all Branches)

New Scheme Based on AICTE Flexible Curricula

Government of India, All India Council for Technical Education

Choice-Based Credit System Semester (CBCSS)

Notice Board

For everyday Updates and Class Notes etc.

DATE: 19 October 2024, 11:00 AM

Model questions paper for B.Tech sem-1 Mid term-1 examination

DATE: 1st October 2024, 11:00 AM

Page-9

Page-10

DATE: 30 September and 1st October 2024, 8:15 AM

Viva for practical Equipment determination

(1) Name of Glassware/ Equipment

(2) Uses of Equipment/ Glassware

Next, We have to draw a Redwood Viscometer Machine mechanism.

What is Viscosity?

Ans: Viscosity is a measure of a fluid's resistance to flow. It describes how thick or thin a liquid is; for example, honey has high viscosity, while water has low viscosity. Viscosity affects how substances move and interact, which is crucial in various scientific and engineering applications.

Discuss how to work the Red Wood Viscometer Apparatus?

Ans: The Redwood viscometer is designed to measure the viscosity of liquid fuels, particularly useful in petroleum testing. Here’s how to operate it:

Preparation: Ensure the viscometer is clean and calibrated. Check that the orifice is unobstructed and the apparatus is level.
Temperature Control: Maintain the liquid at a specified temperature, typically around 37.8°C (100°F), as viscosity is temperature-dependent. Use a thermometer to monitor this.
Filling: Pour the test liquid into the viscometer's reservoir until it reaches the designated mark. Allow any bubbles to escape for an accurate reading.
Flow Measurement: Open the valve at the bottom to start the flow. Start a stopwatch simultaneously.
Timing: Measure the time it takes for a specific volume of liquid (usually 50 ml) to flow through the orifice.
Repeat: Conduct multiple trials for accuracy, ensuring consistent temperature and liquid conditions for each measurement.
Calculating Viscosity: Use the recorded times and the viscometer's calibration constant to calculate the viscosity, typically reported in centistokes (cSt).
Post-Use: Clean the apparatus thoroughly to prevent contamination in future tests.

This method provides critical data for evaluating fuel quality and performance in various applications.