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3 years ago

Describe the make-up of an internal combustion engine. Pls answer quickly.

Engineering

1 answer:

Whitepunk [10]3 years ago

8 0

Answer:

The engine consists of a fixed cylinder and a moving piston. The expanding combustion gases push the piston, which in turn rotates the crankshaft. Ultimately, through a system of gears in the power-train, this motion drives the vehicle's wheels.

Explanation:

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A square steel bar has a length of 7.2 ft and a 2.5 in by 2.5 in cross section and is subjected to axial tension. The final leng

Nataly_w [17]

Answer:

A) ν = 0.292

B) ν = 0.381

Explanation:

Poisson's ratio = - (Strain in the direction of the load)/(strain in the direction at right angle to the load)

In axial tension, the direction of the load is in the length's direction and the direction at right angle to the load is the side length

Strain = change in length/original length = (Δy)/y or (Δx)/x or (ΔL/L)

A) Strain in the direction of the load = (2.49946 - 2.5)/2.5 = - 0.000216

Strain in the direction at right angle to the load = (7.20532 - 7.2)/7.2 = 0.0007389

Poisson's ratio = - (-0.000216)/(0.0007389) = 0.292

B) Strain in the direction of the load = (2.09929 - 2.1)/2.1 = - 0.0003381

Strain in the direction at right angle to the load = (5.30470 - 5.3)/5.3 = 0.0008868

Poisson's ratio = - (-0.0003381)/(0.0008868) = 0.381

7 0

3 years ago

Determine the length of the cantilevered beam so that the maximum bending stress in the beam is equivalent to the maximum shear

Rus_ich [418]

The shear stress at any given point y1 along the height of the cross section is calculated by: where Ic = b·h3/12 is the centroidal moment of inertia of the cross section. The maximum shear stress occurs at the neutral axis of the beam and is calculated by: where A = b·h is the area of the cross section.

3 0

4 years ago

A supply fan is operating at 30000 cfm and 4 inch of water with an efficiency of 50%. (a) Calculate the fan power at the current

serg [7]

Answer:

The pressure and power of fan is 1.77 and 11.18 Hp respectively.

Explanation:

Given:

Discharge $Q_{1} = 30000$ cfm

Pressure difference $\Delta P = 4$ inch

Efficiency $\eta = 50\%$

(A)

From the formula of fan power,

$P _{1} = \frac{Q \Delta P}{6356 \eta}$

$P_{1} = \frac{30000 \times 4}{6356 \times 0.5}$

$P_{1} = 37.76$ Hp

(B)

Fan power and pressure is given by,

We know that pressure difference is proportional to the square of discharge.

$\frac{\Delta p_{2} }{\Delta P_{1} } = (\frac{Q_{2} }{Q_{1} } ) ^{2}$

$\Delta P_{2} = (\frac{20000}{30000} ) \times 4$

$\Delta P_{2} = 1.77$

Fan power proportional to the cube of discharge.

$\frac{P_{2} }{P^{1} } = (\frac{Q_{2} }{Q_{1} } )^{3}$

$P_{2} = \ (\frac{20000}{30000} ) ^{3} \times 37.76$

$P_{2} = 11.18$ Hp

Therefore, the pressure and power of fan is 1.77 and 11.18 Hp respectively.

5 0

3 years ago

When using fall arrest, free fall must be kept at or below how many feet

SashulF [63]

<h3>Answer:</h3>

two feet or less

<h3>Explanation:</h3>

8 0

3 years ago

Please help me

Minchanka [31]

Answer:

The first step of the problem solving process is to identify and define the problem. The second step, which is to analyze the problem, involves gathering information, sorting through relevant and irrelevant information, and evaluating the source of the problem by asking the Five W's: who, what, where, when, and why.

7 0

4 years ago