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plz solve q3 part b

plz solve q3 part b

Elements Of Electromagnetics
Elements Of Electromagnetics
7th Edition
ISBN:9780190698614
Author:Sadiku, Matthew N. O.
Publisher:Sadiku, Matthew N. O.
ChapterMA: Math Assessment
Section: Chapter Questions
Problem 1.1MA
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plz solve q3 part b

3. (a) Shown in figure 2 is a sectioned view of an Eddy Current dy- namometer. Define the items labelled A to E, and making ref- erence to these items, describe the principles by which the dy- namometer measures torque and power - include any relevant formulae in your answer. B A E Figure 2: Eddy Current Dynamometer (b) A 2498c.c turbocharged four cylinder SI engine produces 323NM of torque at 8200rpm while consuming 95litres of petrol per hour. The petrol has density of 740kg/m. The higher calorific value for the petrol is 46.4M J/kg while the lower calorific value is 43.4M J/kg. Calculate the following performance measures; i Brake Power ii Brake Mean Effective Pressure i Brake Specific Fuel Consumption iv Thermal Efficiency (c) Describe a feasible test procedure to obtain an estimate of the indicated mean effective pressure of an engine. Include details of the theory which underpins the test procedure, and any mea- surement problems or sources of inaccuracy.
Transcribed Image Text:3. (a) Shown in figure 2 is a sectioned view of an Eddy Current dy- namometer. Define the items labelled A to E, and making ref- erence to these items, describe the principles by which the dy- namometer measures torque and power - include any relevant formulae in your answer. B A E Figure 2: Eddy Current Dynamometer (b) A 2498c.c turbocharged four cylinder SI engine produces 323NM of torque at 8200rpm while consuming 95litres of petrol per hour. The petrol has density of 740kg/m. The higher calorific value for the petrol is 46.4M J/kg while the lower calorific value is 43.4M J/kg. Calculate the following performance measures; i Brake Power ii Brake Mean Effective Pressure i Brake Specific Fuel Consumption iv Thermal Efficiency (c) Describe a feasible test procedure to obtain an estimate of the indicated mean effective pressure of an engine. Include details of the theory which underpins the test procedure, and any mea- surement problems or sources of inaccuracy.
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