Technician A says the final drive assembly always has a gear ratio of 1:1. Technician B says the final drive assembly provides further gear reduction between the transmission and the drive wheels. Who is correct?

Answers

Answer 1

Answer:

Technician B only is correct

Explanation:

The last stage of gears found between the vehicle transmission system and the wheels is the final drive ratio. The function of the final drive gear assembly is to enable a gear reduction control stage to reduce the rotation per minute and increase the wheel torque, such that the vehicle performance can be adjusted and the final gear ratio can be between 3:1 and 4.5:1 not 1:1

Therefore, technician B only is correct


Related Questions

A piston-cylinder device contains 0.1 kg of hydrogen gas (PG model: cv=10.18, k = 1.4, R= 4.12 kJ/kg-K) at 1000 kPa and 300 K. The gas undergoes an expansion process and the final conditions are 500 kPa, 270 K. If 10 kJ of heat is transferred into the gas from the surroundings at 300 K, determine (a) the boundary work (Wb), and (b) the entropy generated (Sgen) during the process

Answers

Answer:

(a) 151.84 kJ

(b) 2.922 kJ/K

Explanation:

(a) The parameters given are;

Mass of hydrogen gas, H₂ = 0.1 kg = 100 g

Molar mass of H₂ = 2.016 g/mol

Number of moles of H₂ = 100/2.016 = 49.6 moles

V₁ = mRT/P = 0.1×4.12×300/1000 = 0.1236 m³

P₁/P₂ = (V₂/V₁)^k

V₂ = (P₁/P₂)^(1/k)×V₁ =0.1236 × (1000/500)^(1/1.4) = 0.3262 m³

Boundary work done = (V₂ - V₁)(P₂ + P₁)/2 = (0.3262 - 0.1236)*(500 + 1000)/2 = 151.84 kJ

(b) Entropy generated ΔS = Cv · ㏑(T₂/T₁) + R ·㏑(v₂/v₁)

=10.18 × ㏑(270/300) + 4.12 ·㏑(0.3262/0.1236) = 2.922 kJ/K.

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