# Basic Mechanical Engineering(3110006)

BE | Semester 1  Unit : Internal Combustion Engines

## Q3 (c) Summer-2020   A petrol engine with a stroke length of and diameter of has a clearance volume of . If the indicted thermal efficiency is $0.30$, find the relation efficiency. If the effective pressure is and engine runs at . Find the IP of the engine. Take .

Unit : Internal Combustion Engines

## Q4 (c) Summer-2020   Discuss the construction and working of four stroke Petrol engine.

Unit : Internal Combustion Engines

## Q4 (c) Winter-2019   The following readings were observed during a test on Two Stroke Single Cylinder Diesel engine:Bore = 22 cm Stoke = 28 cm Speed = 350 rpm Net brake load = 65 kg Effective brake drum diameter = 100 cm Mean Effective Pressure = 3 bar Fuel consumption = 4 kg/h Calorific value of fuel = 43 MJ. Calculate: (1) Indicated Power (2) Brake Power (3) Mechanical Efficiency (4) Brake thermal Efficiency

Unit : Internal Combustion Engines

## Q4 (a) Winter-2019   Classify I.C. Engines.

Unit : Internal Combustion Engines

## Q4 (b) Winter-2019   Determine the brake thermal efficiency of an engine with following data:Brake Power = 80 kW, Fuel consumption rate = 20 kg / hour, Calorific value of the fuel = 43 MJ / kg.

Unit : Internal Combustion Engines

## Q4 (c) Winter-2019   Discuss the construction and working of four stroke Petrol engines.

Unit : Internal Combustion Engines

## Q4 (c) Summer-2019   A petrol engine with a stroke length of 200 mm and diameter of has a clearance volume of . If the indicted thermal efficiency is $0.30$, find the relation efficiency. If the effective pressure is and engine runs at . Find the IP of the engine. Take .

Unit : Internal Combustion Engines