Efficiency of Spiral and Helical Gear MCQ Quiz - Objective Question with Answer for Efficiency of Spiral and Helical Gear - Download Free PDF

Concept:

Maximum efficiency of the spiral gear is given by,

\(\eta_{max}=\frac{{1~+~cos(θ ~+~ϕ)}}{{1~-~cos(θ~-~ϕ)}}\)

Calculation:

Given:

shaft angle, θ = 90°, friction angle, ϕ = 5° 

\(\eta_{max}=\frac{{1~+~cos(θ ~+~ϕ)}}{{1~-~cos(θ~-~ϕ)}}=\frac{{1~+~cos(90~+~5)}}{{1~-~cos(90~-~5)}}=0.8 4\) = 84%