Specific fuel consumption of a four-stroke internal combustion engine at a given rotational speed is 0.322 kg/kW-h value is minimum. Spindle power at this rotation rate is 123 kW, volumetric efficiency is 95% and air-fuel rate is 15. The number of rotations of this engine is calculated by subtracting 1.5 from the number of rotations giving the minimum specific fuel consumption. time, spindle power 162 kW, specific fuel consumption 0.394 kg/kW-h and volumetric efficiency 85%. a) Calculate the air-fuel ratio in this case. and By what percent has the efficiency of the engine changed?

Q: With the assumptions of projectiles analysis, the acceleration component

A: Answer is ax = 0

Q: Use the equations for the total cost C and total revenue R to find the number x of units a company…

A:

Q: 02/ Choose the correct answer from below 1- With an increase of the number of cylinders in a multi…

A: With the increase of the number of cylinders in a multi-cylinder engine the power to weight ratio…

Q: Suppose that the total cost function for an is linear, that the marginal cost is $54, and that the…

A: Given Data Cost of players is: C=8700 Number of players is : x=50 Marginal cost of players is :…

Q: he blades of a rotary lawnmower are 30cm long and rotate at 315rad/s. Find the linear speed of the…

A: “Since you have asked multiple questions, we will solve the first question for you. If you want any…

Q: Derive an expression for power extracted from wind turbines' blades as function of rotor efficiency.

A: Ans.1 Let us consider the wind speed passing through the motor be uniform and is equal to v. Upward…

Q: At a particular hydroelectric power station water flows at a maximum rate of 155 cubic meters per…

A: According to the problem, 1 cubic metre of water has a mass of 1000 kilograms, therefore, the…

Q: T: The following data is given for a four-stroke diesel engine: Cylinder bore 250 mm Length of…

A: Note: Since you have posted a question with multiple sub-parts, we will solve first three sub- parts…

Q: It is known the following data of each cylinder in a 4-stroke, in- line, 6-cylinder Diesel engine:-…

A: Given:- Mass of each piston,m1=2 kg,Mass of each crank pin,m2=1 kg,Mass of connecting rod,M=6…

Q: Question 3 A 4-stroke, 12 cylinder piston engine is required for the propulsion of an aircraft…

A: Given DataPropeller efficiency η=0.85Thrust=2kNV=127m/sηV=0.87mfma=0.06N=3500rpm *****As per our…

Q: A test on a single cylinder, four stroke oil engine having a bore of 15cm and stroke 30 cm gave the…

A: .

Q: stroke engine develops 60 kw.If the brake thermal efficiency 80%, fuel is 42 MJ/kg and mechanical…

A: Given : Brake power = 60 kW Brake thermal efficiency = 80% Calorific value of fuel = 42 MJ/kg The…

Q: A wind turbine supplies as effective power output of 1.87 MW to a grid. Determine the power…

A: Given data as per question Effective power output =1.87 MW Wind speed =11 m/s Blade length =75 m The…

Q: The shaft of a turbine rotor, initially at rest, accelerates uniformly for 0.9s at 25 rad/s2.…

A:

Q: 1- The rate of effusion of unknown gas was measured and found to be 34.9mL/min. Under the same…

A:

Q: H2: What actually happens in a cylinder in an internal combustion engine? Your input : Number of…

A: Given:  number of carbon atom in the fuel→x=5 So we can assume the fuel as saturated hydrocarbons as…

Q: A 4-stroke, 12 square-cylinder piston rotary engine is required for the propulsion of an aircraft…

A:

Q: 1- A full load test on a 2-stroke single engine yielded the following results: Engine speed 180 rpm…

A:

Q: Consider a propeller designed to always operate at 85% efficiency. Determine and plot the thrust and…

A: The equation for thrust per unit disk area with altitude h as variable…

Q: 5 - Compute the mean piston speed, bmep, torque, and power per piston area for the following…

A:

Q: .22 A 100,000 kg engine is moving up a slope of gradient 5° at a speed 100 m/s. The coefficient of…

A: Given Data: The mass of the engine m=100,000 kg. The slope of the gradient is θ=5°. The speed of…

Q: Graph below represents the force on a 12 kg air mass as it passes through a jet engine.  Immediately…

A: Write the expression of work-done on the air,   W=Area under F-x curve=129039 N2.3 m=10394.85 J…

Q: Fast work

A:

Q: Read the peak power and peak torque from the following curve. Also, find the engine speed that the…

A:

Q: For a given 4-cylinder engine the piston displacement, the bore is 10 cm and the stroke is 12 cm.…

A:

Q: The table below give the velocity, in feet per second, of a rider on a Ferris Wheel at an amusement…

A: Solution: The positive acceleration means the positive slope of the graph of velocity vs time.

Q: 3. The 40.64 cm. diameter pulley of a gasoline engine is connected by a belt (which is assumed not…

A:

Q: Oxygen (molar mass 32 kg/kmol ) expands reversibly in a cylinder behind a piston at a constant…

A: A perfect gas is a gas which has constant specific heat and is an ideal gas also. here, in this…

Q: A four-cylinder, four stroke cycle, single-acting Diesel Engine uses the following data: Rated Power…

A: The above given numerical problem is related to Internal combustion engines, which are generally…

Q: Rate of heat transfer to evaporator from the chilled water: Answer : 0.627 kW ✓ Rate of heat…

A: Since you have posted a question with multiple sub-parts, we will solve the first three subparts for…

Q: 19. A force of 10 kg acts on a 10 kg mass horizontally and on a frictionless plane. What is the…

A: Please find the answer below

Q: The upward velocity of a rocket can be computed by the following formula: mo v = u ln mo gt qt |…

A: Graphical method: From graph we can observe v = 1000 at t = 25.947 sec

Q: For a given single cylinder engine the piston displacement, Pd is 600 cc, the stroke is 12 cm and…

A:

Q: team at 100°C is added to ice at 0°C. (a) Find the amount of ice melted and the final temperature…

A:

Q: 15. Box A was pulled across a floor by a constant force which makes a 30 degree angle with the…

A: Option (B)

Q: From a building 30 m high, a stone was dropped. Calculate the velocity when it hits the ground and…

A: Given data: h=30 mg=9.27 m/s2 Need to determine the velocity and time taken by the stone when it hit…

Q: .A cast iron flywheel with mean radius of 250 mm runs at average of 100 rad/s and has a maximum…

A:

Q: An air-cooled condenser has an expected U value of 30 W/m2∙K based on the airside. The condenser is…

A:

Q: A simple expression for the mean temperature in turning on a lathe is given by Tmean x V°f%, (21.24)…

A:

Q: A blower with the inlet open to the atmosphere delivers 250 cubic meters per minute of air at a…

A: Answer: The required motor rating is 20.553 kW.

Q: 7. A jet engine produces a thrust force of 52,000 lbf on a test stand as shown in the figure. Fuel…

A: Write the given data: A1=64 ft2V1=500 ft/sP1=-100 psfgV2=1200 ft/sP2=PatmFx=52000 lbf

Q: A parent exerts a torque on a merry-go-round at a park. The torque has a magnitude given by  τ =…

A:

Q: 2. A test conducted on a four-stroke four-cylinder petrol engine having a bore of 75mm and a stroke…

A:

Q: 59. To help prevent frost damage, fruit growers sometimes protect their crop by spraying it with…

A: Part A) Calculate heat lost by water when it freezes to zero degrees Celcius.

Q: 02/ Choose the correct answer from below 1- With an increase of the number of cylinders in a multi…

A:

Q: The wheel of an automobile revolves at the rate of 700 rpm. How fast does it move in kilometre per…

A:

Q: Apply the grid method to each situation. a. Calculate the energy in joules used by a 1 hp pump that…

A: Part aP=1hp=0.7457time=t=6hrscost of electricity=$0.15 per kW-hr.Energy=E=P×tE=0.7457×6E=4.4742…

Q: A 4-cylinder engine with a bore to stroke ratio of 10 cm x 12 cm, and an individual clearance volume…

A: