Q2: A two-stroke diesel engine was electrically motored (non-firing operation) when the meter reading was 1.5 kW. Then the test on the engine was carried out for firing operation and the following observations were recorded: brake torque = 120 N.m; speed = 600 rpm. (i) Determine the brake power (b.p), the indicated power (i.p), and mechanical efficiency (nm). (ii) Draw up the heat balance sheet on percentage basis, if the fuel used = 2.5 kg/hr; calorific value of fuel = 40.3 MJ/kg; cooling water used = 818 kg/hr; rise in temperature of cooling water = 10°C; 25°C; AFR = 32:1. Take = exhaust gas temperature 345°C; room temperature = Cpw = 4.2 kJ/kg.K and Cpexh = 1.05 kJ/kg.K. Assume comb = 98%.

Q2: A two-stroke diesel engine was electrically motored (non-firing operation) when the meter reading was 1.5 kW. Then the test on the engine was carried out for firing operation and the following observations were recorded: brake torque = 120 N.m; speed = 600 rpm. (i) Determine the brake power (b.p), the indicated power (i.p), and mechanical efficiency (nm). (ii) Draw up the heat balance sheet on percentage basis, if the fuel used = 2.5 kg/hr; calorific value of fuel = 40.3 MJ/kg; cooling water used = 818 kg/hr; rise in temperature of cooling water = 10°C; 25°C; AFR = 32:1. Take = exhaust gas temperature 345°C; room temperature = Cpw = 4.2 kJ/kg.K and Cpexh = 1.05 kJ/kg.K. Assume comb = 98%.

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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