The rotational angle during flame propagation is from 12° BTDC to 12 aTDC, for an engine running at 1800 rpm.find the time of flame propagation?Select one:O a. 0.00204 secO b 0.0042 secOc 0.0022 secO d. 0.00304 secFind the ratio of exhaust valve area to intake valve area if the intake air temperature is 107" C and exhaust gases temperature is 537" C, assume k=1.35, R= 287 J/kg k.Select one:O a. 0.76Ob. 0.45Oc0.64O d. 0.685 If the mass flow rate of air entering the carburetor is 0.2 kg/s, assuming the discharge coefficient of the throat is 0.9, find the throat diameter?Select oneO a. 0.0237 mO b 0.3 mOc 0.0346 mO d. 0.32 mNext finge

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Answered: The rotational angle during flame…

Elements Of Electromagnetics

7th Edition

ISBN:9780190698614

Author:Sadiku, Matthew N. O.

Publisher:Sadiku, Matthew N. O.

ChapterMA: Math Assessment

Section: Chapter Questions

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For a sprak ignition engine the following readings were observed. cylinder diameter 10 cm, stroke length 10 cm and clearance gap between TDC and cylinder head is 10 mm. for such engine the compression ratio will be а. 11 O b. 10 c. 100 d. 110
+. Page view 360° Exhaust 540° Intake 720° Compression 4. Why do multi-cylinder engines have smaller flywheels than single-cylinder engines? 5. What systems are commonly seen on an engine? What additional systems are needed to use an engine as a tractor? 6. Why does a cam shaft run at half the speed of the crankshaft? Illustrate. 7. How do you designate the size of an engine? 8. What will be the total piston displacement in a two-cylinder 100 mm x 130 mm engine? 9. If each cylinder of the above engine has a clearance volume equal to one fifth of the total cylinder volume, then compute: a) the clearance volume; b) the compression ratio. 10. Sketch the. operation of a four-stroke petrol engine, explaining the events at each stage. How will the events differ from those of a diesel engine? 11. Why is there a power stroke for every down stroke of piston'travel in a two-stroke engine? At what interval does the power stroke occur in a four-stroke engine? 12. Assuming a firing order of 1 3.- 4…

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The rotational angle during flame propagation is from 12° 6TDC to 12° aTDC, for an engine running at 1800 rpm. find the time of flame propagation?